阅读说明：本技术 医学影像设备 (Medical imaging equipment ) 是由 韩振中 刘珍宝 陈建樵 胡诗铭 于 2021-08-30 设计创作，主要内容包括：本发明提供一种医学影像设备,其包括：辅助采集系统；所述辅助采集系统包括摄像头模块、投影模块、处理模块及基座；所述摄像头模块与所述投影模块分别设置于所述基座上,所述摄像头模块与所述投影模块分别与所述处理模块通信连接；所述投影模块用于向扫描床上的被扫描对象照射,以将光纹理赋予所述被扫描对象的表面；所述摄像头模块用于拍摄被所述投影模块所照射的所述被扫描对象的图像；所述处理模块基于所述摄像头模块所拍摄的图像,得到所述被扫描对象的生理信号；所述医学影像设备获取所述生理信号,并依据所述生理信号,触发扫描。如此配置,可以准确地检测到被扫描对象的生理信号,提高医学影像设备的成像效率及图像精度。(The present invention provides a medical imaging apparatus, comprising: an auxiliary acquisition system; the auxiliary acquisition system comprises a camera module, a projection module, a processing module and a base; the camera module and the projection module are respectively arranged on the base, and are respectively in communication connection with the processing module; the projection module is used for irradiating a scanned object on a scanning bed so as to endow the surface of the scanned object with optical texture; the camera module is used for shooting the image of the scanned object irradiated by the projection module; the processing module obtains a physiological signal of the scanned object based on the image shot by the camera module; the medical imaging device acquires the physiological signal and triggers scanning according to the physiological signal. By the arrangement, the physiological signal of the scanned object can be accurately detected, and the imaging efficiency and the image precision of the medical imaging equipment are improved.)

1. A medical imaging apparatus, comprising: an auxiliary acquisition system;

the auxiliary acquisition system comprises a camera module, a projection module, a processing module and a base;

the camera module and the projection module are respectively arranged on the base, and are respectively in communication connection with the processing module;

the projection module is used for irradiating a scanned object on a scanning bed so as to endow the surface of the scanned object with optical texture; the camera module is used for shooting the image of the scanned object irradiated by the projection module; the processing module obtains a physiological signal of the scanned object based on the image shot by the camera module;

the medical imaging device acquires the physiological signal and triggers scanning according to the physiological signal.

2. The medical imaging device of claim 1, wherein the light texture comprises a shape, size, and location distribution of a plurality of light elements.

3. The medical imaging device of claim 1, wherein the camera module and the projection module are rotatably and/or movably disposed on the base respectively; the camera module moves along with the movement of the scanning bed and/or the movement of the projection module; the projection module is rotatably and/or movably arranged on the base; the projection module moves with the movement of the scanning bed.

4. The medical imaging device of claim 3, wherein the camera module and the projection module are coaxially rotatably disposed; the auxiliary acquisition system further comprises a first driving assembly, and the first driving assembly is connected with the camera module and the projection module and used for driving the camera module and the projection module to rotate.

5. The medical imaging device of claim 4, wherein the first driving assembly comprises a first motor, a first driving shaft and a first bracket, the first motor is connected with the base, the first driving shaft is coupled with the first motor, and the first motor is used for driving the first driving shaft to rotate; the first support is connected with the first driving shaft, and the camera module and the projection module are connected with the first support; wherein the first bracket and the first drive shaft have at least two connection points.

6. The medical imaging device of claim 1, wherein the auxiliary acquisition system further comprises a radar module, the radar module being communicatively coupled to the processing module;

the radar module is used for acquiring reflected waves of a scanned object on the scanning bed; the processing module is also used for obtaining a physiological signal of the scanned object based on the reflected wave acquired by the radar module;

the medical imaging equipment triggers scanning based on the physiological signals obtained by the processing module.

7. The medical imaging device of claim 6, wherein the radar module is rotatably and/or movably disposed on the base; the processing module is also used for obtaining the position information of the scanned object based on the image shot by the camera module; the radar module moves along with the movement of the scanning bed, according to information in a scanning protocol or according to position information of the scanned object obtained by the processing module so as to adapt to the movement of the scanning bed, the scanning protocol or the position of the scanned object.

8. The medical imaging device of claim 7, wherein the information in the scanning protocol includes information of a scanning part and/or a scanning body position, and the information of the scanning part and/or the scanning body position has a preset corresponding relationship with the detection position of the radar module.

9. The auxiliary acquisition system of claim 7 further comprising a second driving assembly connected to the radar module for driving the radar module to rotate.

10. The medical imaging device of claim 9, wherein the second driving assembly comprises a second motor, a second driving shaft and a second bracket, the second motor is connected to the base, the second driving shaft is coupled to the second motor, and the second motor is configured to drive the second driving shaft to rotate; the second bracket is connected with the second driving shaft, and the radar module is connected with the second bracket; wherein the second bracket has at least two connection points with the second drive shaft.

11. The medical imaging device of claim 7, wherein the auxiliary acquisition system further comprises a control module, a first drive assembly and a second drive assembly; the first driving assembly is used for driving the camera module and the projection module to move; the second driving component is used for driving the radar module to move;

the control module is respectively in communication connection with the first driving assembly and the second driving assembly and is used for respectively controlling the movement of the corresponding modules.

12. The medical imaging device of claim 11, wherein the control module is further communicatively connected to a driving system of the scanning bed, and the control module is configured to obtain information of the scanning position and/or scanning posture in the current scanning protocol from the driving system of the scanning bed.

13. The medical imaging device of claim 12, wherein the camera module, the projection module and the radar module are respectively in communication with the control module, and the rotation angles or the movement positions of the camera module, the projection module and the radar module are adjusted according to the scanning position and/or the scanning posture in the scanning protocol.

14. The medical imaging device of claim 1, wherein the medical imaging device comprises a housing having a chamber, the housing enclosing a scanning chamber, the scanning bed for carrying the object to be scanned into and out of the scanning chamber; the auxiliary acquisition system is arranged on the end face of the shell, in the scanning cavity or in the cavity, or the auxiliary acquisition system is partially arranged in the cavity, and partially penetrates out of the cavity and extends into the scanning cavity.

15. The medical imaging device of claim 14, wherein the auxiliary acquisition system is coupled to the housing through the base; the base is fixedly arranged in the scanning cavity and on the end face of the shell, or the base is fixedly arranged on one face, deviating from the scanning cavity, of the shell.

Technical Field

The invention relates to the technical field of medical imaging equipment, in particular to medical imaging equipment.

Background

At present, in medical imaging equipment, the detection of the breathing and heartbeat motion of a scanned object is an important system function, and when the scanned object is scanned by CT or PETCT, image artifacts caused by motion, such as breathing, heartbeat, rigid head motion and the like, need to be considered; in the prior art, motion information is acquired through external motion monitoring equipment, and image artifacts caused by motion are eliminated by adopting reconstruction algorithms such as gating binning and motion correction, so that the image quality is improved. In addition, the door control and box separation modes are independent use modes or use scenes are fixed, and the door control and box separation modes are difficult to be combined for use.

Disclosure of Invention

The invention aims to provide medical imaging equipment to solve the problem that the system for detecting breathing and heartbeat movement of the existing medical imaging equipment is complex.

In order to solve the above technical problem, the present invention provides a medical imaging apparatus, comprising: an auxiliary acquisition system;

the auxiliary acquisition system comprises a camera module, a projection module, a processing module and a base;

the camera module and the projection module are respectively arranged on the base, and are respectively in communication connection with the processing module;

the projection module is used for irradiating a scanned object on a scanning bed so as to endow the surface of the scanned object with optical texture; the camera module is used for shooting the image of the scanned object irradiated by the projection module; the processing module obtains a physiological signal of the scanned object based on the image shot by the camera module;

the medical imaging device acquires the physiological signal and triggers scanning according to the physiological signal.

Optionally, the light texture includes a shape, size, and position distribution of a plurality of light elements.

Optionally, the camera module and the projection module are respectively rotatably and/or movably disposed on the base; the camera module moves along with the movement of the scanning bed and/or the movement of the projection module; the projection module is rotatably and/or movably arranged on the base; the projection module moves with the movement of the scanning bed.

Optionally, the camera module and the projection module are coaxially and rotatably arranged; the auxiliary acquisition system further comprises a first driving assembly, and the first driving assembly is connected with the camera module and the projection module and used for driving the camera module and the projection module to rotate.

Optionally, the first driving assembly includes a first motor, a first driving shaft and a first bracket, the first motor is connected to the base, the first driving shaft is coupled to the first motor, and the first motor is configured to drive the first driving shaft to rotate; the first support is connected with the first driving shaft, and the camera module and the projection module are connected with the first support; wherein the first bracket and the first drive shaft have at least two connection points.

Optionally, the auxiliary acquisition system further includes a radar module, and the radar module is in communication connection with the processing module;

the radar module is used for acquiring reflected waves of a scanned object on the scanning bed; the processing module is also used for obtaining a physiological signal of the scanned object based on the reflected wave acquired by the radar module;

the medical imaging equipment triggers scanning based on the physiological signals obtained by the processing module.

Optionally, the radar module is rotatably and/or movably arranged on the base; the processing module is also used for obtaining the position information of the scanned object based on the image shot by the camera module; the radar module moves along with the movement of the scanning bed, according to information in a scanning protocol or according to position information of the scanned object obtained by the processing module so as to adapt to the movement of the scanning bed, the scanning protocol or the position of the scanned object.

Optionally, the information in the scanning protocol includes information of a scanning part and/or a scanning body position, and the information of the scanning part and/or the scanning body position and the detection position of the radar module have a preset corresponding relationship.

Optionally, the auxiliary acquisition system further includes a second driving assembly, and the second driving assembly is connected to the radar module and is configured to drive the radar module to rotate.

Optionally, the second driving assembly includes a second motor, a second driving shaft and a second bracket, the second motor is connected to the base, the second driving shaft is coupled to the second motor, and the second motor is configured to drive the second driving shaft to rotate; the second bracket is connected with the second driving shaft, and the radar module is connected with the second bracket; wherein the second bracket has at least two connection points with the second drive shaft.

Optionally, the auxiliary collecting system further includes a control module, a first driving assembly and a second driving assembly; the first driving assembly is used for driving the camera module and the projection module to move; the second driving component is used for driving the radar module to move;

the control module is respectively in communication connection with the first driving assembly and the second driving assembly and is used for respectively controlling the movement of the corresponding modules.

Optionally, the control module is further in communication connection with a driving system of the scanning bed, and the control module is configured to obtain information of a scanning position and/or a scanning body position in the scanning protocol from the driving system of the scanning bed.

Optionally, the camera module, the projection module, and the radar module are respectively in communication with the control module, and the rotation angles or the movement positions of the camera module, the projection module, and the radar module are adaptively adjusted according to the scanning position and/or the scanning posture in the scanning protocol.

Optionally, the medical imaging apparatus includes a housing, the housing has a chamber, and the housing encloses to form a scanning chamber, and the scanning bed is used for carrying the scanned object to enter and exit the scanning chamber; the auxiliary acquisition system is arranged on the end face of the shell, in the scanning cavity or in the cavity, or the auxiliary acquisition system is partially arranged in the cavity, and partially penetrates out of the cavity and extends into the scanning cavity.

Optionally, the auxiliary collecting system is connected to the housing through the base; the base is fixedly arranged in the scanning cavity and on the end face of the shell, or the base is fixedly arranged on one face, deviating from the scanning cavity, of the shell.

In summary, the medical imaging apparatus provided by the present invention includes: an auxiliary acquisition system; the auxiliary acquisition system comprises a camera module, a projection module, a processing module and a base; the camera module and the projection module are respectively arranged on the base, and are respectively in communication connection with the processing module; the projection module is used for irradiating a scanned object on a scanning bed so as to endow the surface of the scanned object with optical texture; the camera module is used for shooting the image of the scanned object irradiated by the projection module; the processing module obtains a physiological signal of the scanned object based on the image shot by the camera module; the medical imaging device acquires the physiological signal and triggers scanning according to the physiological signal.

So configured, the optical texture technology is adopted to collect physiological signals including respiration and heartbeat of a scanned object, when medical scanning is carried out, the patient is required to be relatively fixed and static in position, and the respiration or heartbeat of the patient can cause slight movement or fluctuation of a part to be scanned of the patient, so as to bring artifacts to a scanned image; the processing module 13 obtains the physiological signal and applies to the gate control triggering of the medical imaging device, and does not rely on depth data to obtain vital sign information, and can detect the physiological signal of the scanned object in any posture, and can accurately detect the physiological signal of the scanned object even when the skin is not exposed, thereby improving the imaging efficiency and the image precision of the medical imaging device. The mode of integrally setting the camera module in the auxiliary acquisition system is also favorable for simplifying the structure, reduces the overall size of equipment, and has low hardware cost and good reliability.

Drawings

It will be appreciated by those skilled in the art that the drawings are provided for a better understanding of the invention and do not constitute any limitation to the scope of the invention. Wherein:

FIG. 1 is a schematic diagram of a medical imaging apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an auxiliary acquisition system of an embodiment of the present invention;

FIG. 3 is a schematic illustration of a light texture of an embodiment of the present invention;

fig. 4 is a schematic view of a camera module according to an embodiment of the invention;

FIG. 5 is a schematic diagram of a radar module of an embodiment of the present invention;

fig. 6 is a schematic view of an integrated arrangement of a camera module and a radar module according to an embodiment of the present invention.

In the drawings:

1-an auxiliary acquisition system; 2-scanning the bed; 3-an equipment rack; 31-a CT gantry; 32-PET gantry; 4-a shell; 40-a scanning chamber; 41-a chamber; 42-end face;

10-a base; 11-a camera module; 12-a projection module; 13-a processing module; 14-a first drive assembly; 141-a first electric machine; 142-a first drive shaft; 143-a first scaffold; 144-a coupling; 15-a radar module; 16-a second drive assembly; 161-a second motor; 162-a second drive shaft; 163-a second bracket; 164-coupling.

Detailed Description

To further clarify the objects, advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It is to be noted that the drawings are in greatly simplified form and are not to scale, but are merely intended to facilitate and clarify the explanation of the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.

As used in this specification, the singular forms "a", "an" and "the" include plural referents, the term "or" is generally employed in its sense including "and/or," the terms "a" and "an" are generally employed in their sense including "at least one," the terms "at least two" are generally employed in their sense including "two or more," and the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second" and "third" may explicitly or implicitly include one or at least two of such features, the terms "one end" and "the other end" and "proximal end" and "distal end" generally refer to the corresponding two parts, which include not only the end points, but the terms "mounted", "connected" and "connected" should be broadly construed, e.g., as a fixed connection, as well as a detachable connection, or as an integral part; either directly or indirectly through intervening media, either internally or in any other relationship. Furthermore, as used in this specification, an element being disposed on another element generally only means that there is a connection, coupling, fit, or drive relationship between the two elements, and the connection, coupling, fit, or drive between the two elements may be direct or indirect through intervening elements, and should not be construed as indicating or implying any spatial relationship between the two elements, i.e., an element may be in any orientation within, outside, above, below, or to one side of another element; as used in this specification, "upper", "lower", "high", "low", "top", "bottom" should be understood to be located at relatively different positions from the ground, depending on the influence of gravity, unless the content clearly indicates otherwise. The specific meanings of the above terms in the present specification can be understood by those of ordinary skill in the art as appropriate.

The invention aims to provide an auxiliary acquisition system and medical imaging equipment, and aims to solve the problem that the system for detecting vital signs by the conventional medical imaging equipment is complex.

The following description refers to the accompanying drawings.

Referring to fig. 1 to 6, fig. 1 is a schematic diagram of a medical imaging apparatus according to an embodiment of the invention; FIG. 2 is a schematic diagram of an auxiliary acquisition system of an embodiment of the present invention; FIG. 3 is a schematic illustration of a light texture of an embodiment of the present invention; fig. 4 is a schematic view of a camera module according to an embodiment of the invention; FIG. 5 is a schematic diagram of a radar module of an embodiment of the present invention; fig. 6 is a schematic view of an integrated arrangement of a camera module and a radar module according to an embodiment of the present invention.

As shown in fig. 1, an embodiment of the present invention provides a medical imaging apparatus, which includes an auxiliary acquisition system 1, and preferably further includes a scanning bed 2, at least one equipment rack 3, and a housing 4. The housing 4 is provided with a chamber 41, the housing 4 encloses to form a scanning cavity 40, and the equipment rack 3 is arranged in the chamber 41; the scanning bed 2 is used for movably extending into the scanning cavity 40 along the axial direction of the scanning cavity 40; the auxiliary acquisition system 1 is disposed in the end face 42 of the housing 4, the scanning cavity 40, or in the cavity 41, and in some embodiments, the auxiliary acquisition system 1 may also be partially disposed in the cavity 41, and partially extend out of the housing 4 from the cavity 41 into the scanning cavity 40. Preferably, the auxiliary acquisition system 1 is located at one end of at least one of the equipment racks 3 along the axial direction of the scanning chamber 40.

Referring to fig. 2 and 3, the auxiliary collecting system 1 includes a camera module 11, a projection module 12, a processing module 13 and a base 10; the camera module 11 and the projection module 12 are respectively arranged on the base 10, and the camera module 11 and the projection module 12 are respectively in communication connection with the processing module 13; the scanning bed 2 is movably arranged relative to the base 10; optionally, the auxiliary collecting system 1 is connected to the housing 4 through the base 10; the base 10 can, for example, be arranged fixedly in the scanning chamber 40, or fixedly at the end face 42 of the housing 4, or the base 10 can be arranged fixedly at the side of the chamber 41 of the housing 4 facing away from the scanning chamber 40. The projection module 12 is used for irradiating the scanned object on the scanning bed 2 to endow the surface of the scanned object with light texture (as shown in fig. 3); the camera module 11 is used for shooting the image of the scanned object irradiated by the projection module 12; the processing module 13 calculates information such as the position and depth of the object according to the change of the optical signal caused by the object based on the image shot by the camera module 11, and further restores the whole three-dimensional space, so that the contour of the scanned object can be acquired, and physiological signals of the scanned object, such as heartbeat signals or respiratory signals, can be obtained; the medical imaging device acquires the physiological signal and triggers scanning according to the physiological signal.

So configured, the optical texture technology is adopted to collect physiological signals including respiration and heartbeat of a scanned object, when medical scanning is carried out, the patient is required to be relatively fixed and static in position, and the respiration or heartbeat of the patient can cause slight movement or fluctuation of a part to be scanned of the patient, so as to bring artifacts to a scanned image; the processing module 13 obtains the physiological signal and applies to the gate control triggering of the medical imaging device, and does not rely on depth data to obtain vital sign information, and can detect the physiological signal of the scanned object in any posture, and can accurately detect the physiological signal of the scanned object even when the skin is not exposed, thereby improving the imaging efficiency and the image precision of the medical imaging device. The mode of integrating camera module 11 and projection module 12 in auxiliary acquisition system 1 also helps to simplify the structure, reduces the overall size of equipment, and has low hardware cost and good reliability.

Referring to fig. 3, the following describes the principle of acquisition using the optical texture technique: the projection module 12 illuminates a set of areas of a person's body, thereby imparting additional light texture (of natural and/or artificial ambient light) to a portion of the surface of the person's body. The light texture comprises a distribution of shapes, sizes and positions of a plurality of light elements, the different illumination areas of the light texture being referred to as "elements". A body movement of the person in relation to the breathing and/or the heartbeat of the person results in a change of one or more light distributions, shape distributions, size distributions, position distributions of the elements of the light texture and/or a change of the number of these elements. These changes are captured by the camera module 11, resulting in images of several video frames which are processed by the processing module 13, i.e. a numerical signal representative of the heartbeat and/or respiration of the person is generated.

Preferably, the medical imaging device triggers scanning according to a scanning sequence configuration based on the waveform of the physiological signal. Taking the respiration signal as an example, the respiration signal is similar to a half sine waveform, and is combined with the current scanning sequence configuration to select a proper time to generate the trigger signal. Alternatively, the trigger signal may be triggered at a rising edge, a falling edge, or a highest point of the waveform of the physiological signal.

Referring to fig. 4, optionally, the camera module 11 and the projection module 12 are respectively rotatably and/or movably disposed on the base 10; the camera module 11 moves along with the movement of the scanning bed 2 and/or the movement of the projection module 12; the projection module 12 is rotatably and/or movably arranged on the base 10; the projection module 12 moves with the movement of the scanning bed 2. It is to be understood that the movement herein includes rotation and/or movement. Further, the rotating shafts of the camera module 11 and the projection module 12 are overlapped, and both are rotatably arranged. Of course, in some other embodiments, the rotation axes of the camera module 11 and the projection module 12 may not be coaxial, or either one of the camera module 11 and the projection module 12 may rotate, and the other one may be fixedly disposed on the base 10, and those skilled in the art can configure the embodiments according to the practice, and in some other embodiments, the camera module 11 and the projection module 12 are not limited to only rotate around the radial direction of the scanning cavity 40, and the positions of the camera module 11 and/or the projection module 12 can also be adjusted in an up-down-left-right translation manner, or adjusted around the edge of the scanning field, so as to meet the postures and monitoring ranges of different scanned objects. Those skilled in the art can change the method according to the prior art, and the embodiment will not be described. It should be noted that, in the example shown in fig. 4, the working ranges of the camera module 11 and the projection module 12 are expressed as overlapping, and in practice, since the camera module 11 and the projection module 12 have a certain distance with respect to the object to be scanned, the working ranges of the camera module 11 and the projection module 12 should be approximately overlapped when extending to the body surface of the object to be scanned, or the working range (i.e., the shooting range) of the camera module 11 should be slightly larger than the working range (i.e., the projection range) of the projection module 12, so that the camera module 11 can effectively shoot the optical texture projected by the projection module 12.

Referring to fig. 4, further, the auxiliary collecting system 1 further includes a first driving assembly 14, where the first driving assembly 14 is connected to the camera module 11 and the projection module 12, and is used for driving the camera module 11 and the projection module 12 to rotate. In an exemplary embodiment, the first driving assembly 14 includes a first motor 141, a first driving shaft 142 and a first bracket 143, the first motor 141 is connected to the base 10, the first driving shaft 142 is coupled to the first motor 141, and the first motor 141 is configured to drive the first driving shaft 142 to rotate; the first support 143 is connected to the first driving shaft 142, and the camera module 11 and the projection module 12 are connected to the first support 143.

More specifically, the first motor 141 may be, for example, a servo motor, which is coupled to the first driving shaft 142 through a coupling 144 and is used for driving the first driving shaft 142 to rotate. Of course, in other embodiments, the first motor 141 may also be coupled to the first driving shaft 142 through a transmission component commonly used in the art, for example, a gear set or a belt pulley set is used to drive the first driving shaft 142. The first bracket 143 may be formed with a through hole through which the first driving shaft 142 may pass, thereby achieving the connection of the first driving shaft 142 and the first bracket 143. Preferably, the inner diameter of the through hole is slightly smaller than the outer diameter of the first driving shaft 142, and the first driving shaft 142 and the through hole can be connected by interference fit, so as to transmit torque therebetween, and thus the first driving shaft 142 can drive the first bracket 143 to rotate. Of course, in other embodiments, the first driving shaft 142 and the through hole may be connected by welding or gluing, or the first driving shaft 142 and the through hole may be configured in a non-circular shape to achieve torque transmission therebetween, and one skilled in the art may select a suitable connection manner according to the actual situation. Further, the camera module 11 and the projection module 12 may be fixed on the first bracket 143 by screws, and optionally, when the medical imaging apparatus is a magnetic resonance apparatus, the screws are made of a non-magnetic material to avoid interference with magnetic resonance imaging. Therefore, the effect of driving the camera module 11 and the projection module 12 to rotate through the rotation of the first motor 141 is achieved, and stepless adjustment of the angles of the camera module 11 and the projection module 12 is achieved.

Preferably, the first bracket 143 has a U-shape, and the first bracket 143 and the first driving shaft 142 have at least two connection points. The U-shaped first bracket 143 includes two side wings, and the through hole is located on the side wing of the first bracket 143 near the first motor 141. as mentioned above, the connection point of the first driving shaft 142 and the through hole of the first bracket 143 is regarded as a connection point, and the end of the first driving shaft 142 away from the first motor 141 is further connected with the other side wing of the first bracket 143 (e.g. it may be welded or glued, etc.), which may be regarded as a second connection point. When the first bracket 143 is connected to the first driving shaft 142 only through a connecting point at the through hole, an end of the first bracket 143 away from the first motor 141 may be regarded as a cantilever end, and the camera module 11 and the projection module 12 mounted thereon may also generate radial run-out or swing when rotating with the first bracket 143. The first bracket 143 and the first driving shaft 142 have at least two connecting points, so that the radial run-out or swing of the end of the first bracket 143 away from the first motor 141 is limited, and the rotation accuracy and reliability of the camera module 11 and the projection module 12 are improved. Of course, in other embodiments, the camera module 11 and the projection module 12 can also move along with the movement of the scanning bed 2 to adapt the position of the scanned object on the scanning bed 2 in real time. In another embodiment, the camera module 11 and the projection module 12 can move or rotate according to the body position of the scanned object (the body position at least can include the head position, the foot position, the supine position, the prone position, and the lateral position of the scanned object) determined in the current scanning protocol to adapt to the position of the scanned object on the scanning bed 2.

Referring to fig. 5, further, the auxiliary acquisition system 1 further includes a radar module 15, and the radar module 15 is communicatively connected to the processing module 13; the radar module 15 is used for acquiring reflected waves of a scanned object on the scanning bed 2; the processing module 13 further obtains a physiological signal of the scanned object based on the reflected wave acquired by the radar module 15; the medical imaging device triggers scanning based on the physiological signal obtained by the processing module 13.

Preferably, the radar module 15 is a millimeter wave radar, and the millimeter wave radar is a radar operating in a millimeter wave band (millimeter wave) for detection. The frequency domain is approximately 30 GHz-300 GHz. The wavelength of the millimeter wave is between microwave and centimeter wave, so the millimeter wave radar has some advantages of both microwave radar and photoelectric radar, and the application of the millimeter wave radar to medical imaging equipment has unique advantages.

Optionally, the radar module 15 is rotatably and/or movably disposed on the base 10; the processing module 13 further obtains the position information of the scanned object based on the image shot by the camera module 11; the radar module 15 moves (including rotating and/or moving) with the movement of the scanning bed 2, according to information in the scanning protocol or according to the position information of the scanned object obtained by the processing module to adapt the movement of the scanning bed 2, the scanning protocol or the position of the scanned object.

In some cases, the radar module 15 is mainly used to detect respiratory motion, so the detection position of the radar module 15 is a position corresponding to the abdomen of the scanned object, therefore if the position of the abdomen of the scanned object is considered to be fixed relative to the position of the scanning bed 2, the radar module 15 is only required to move along with the movement of the scanning bed 2 after the initial orientation is set.

In some cases, the radar module 15 may also detect other motions, for example, the head of the scanned object may also have a certain motion, and thus, when the head is scanned, an artifact may be generated. The radar module 15 may obtain reflected waves within a certain range, and may not collect signals specifically for different regions. And then combine the picture that camera module 11 shot, the processing module can obtain the position information of the scanned object, and then can confirm the position that radar module 15 scanned, thus can definitely send head trigger signal, heartbeat trigger signal or breathing trigger signal to medical imaging equipment, in order to trigger medical imaging equipment to scan.

Preferably, the information in the scanning protocol includes information of a scanning part and/or a scanning body position, and the information of the scanning part and/or the scanning body position and the detection position of the radar module 15 have a preset corresponding relationship, so that the radar module 15 can determine its own orientation according to the information of the scanning part and/or the scanning body position.

Preferably, the auxiliary acquisition system 1 further includes a second driving assembly 16, and the second driving assembly 16 is connected to the radar module 15 and is configured to drive the radar module 15 to rotate. In an exemplary embodiment, the second driving assembly 16 includes a second motor 161, a second driving shaft 162 and a second bracket 163, the second motor 161 is connected to the base 10, the second driving shaft 162 is coupled to the second motor 161, and the second motor 161 is used for driving the second driving shaft 162 to rotate; the second bracket 163 is connected to the second driving shaft 162, and the radar module 15 is connected to the second bracket 143.

More specifically, the second motor 161 may be, for example, a servo motor, which is coupled to the second driving shaft 162 via a coupling 164 and is used for driving the second driving shaft 162 to rotate. Further, the radar module 15 may be fixed to the second bracket 163 by screws. Thereby realize through the rotation of second motor 161, drive radar module 15 pivoted effect, realize the electrodeless regulation to radar module 15's angle. Of course, in other embodiments, the second motor 161 may be coupled to the second driving shaft 162 via a transmission component commonly used in the art.

Preferably, the second bracket 163 has a U-shape, and the second bracket 163 has at least two connection points with the second driving shaft 162. Similar to the first bracket 143, the second bracket 163 has at least two connection points with the second driving shaft 162, so that the radial runout of the end of the second bracket 163 away from the second motor 161 is limited, and the rotation accuracy and reliability of the radar module 15 are improved. Of course in other embodiments the radar module 15 may also be moved with the movement of the scanning bed 2 to adapt the movement of the scanning bed 2.

Preferably, the auxiliary acquisition system 1 may further include a control module (not shown) which is respectively connected to the first driving assembly 14 and the second driving assembly 16 for controlling the rotation of the corresponding modules, so that the emitting surfaces or detecting surfaces of the camera module 11, the projection module 12 and the radar module 15 can be adapted to the movement of the scanning bed 2. Specifically, the first motor 141 in the first driving assembly 14 and the second motor 161 in the second driving assembly 16 may be respectively in communication connection with a control module of the auxiliary collecting system 1, and the first motor 141 and the second motor 161 rotate under the control of the control module.

Further, the camera module 11, the projection module 12 and the radar module 15 are disposed coaxially, and further, the rotation axes of the camera module 11, the projection module 12 and the radar module 15 are all arranged along the radial direction of the scanning cavity 40. When the scanning bed 2 moves, the three parts all rotate at the same time, so that the auxiliary acquisition system 1 can complete multiple functions in one scanning process, and when a scanned object moves on the scanning bed 2, the camera module 11, the projection module 12 and the radar module 15 can synchronously perform angle adjustment and application switching, so that information such as respiration of the abdomen, heartbeat of the chest, head movement and the like of the scanned object can be accurately acquired at the same time, and the imaging efficiency and the image precision of medical imaging equipment are improved. The mode of integrating camera module 11, projection module 12 and radar module 15 in auxiliary acquisition system 1 also helps to simplify the structure and reduce the overall size of the device.

In other embodiments, the radar module 15 is not limited to only being rotatable around the radial direction of the scanning chamber 40, and the position of the radar module 15 can also be adjusted by up-down-left-right translation, or around the edge of the scanning field, to meet the posture and monitoring range of different scanned objects. Those skilled in the art can change the method according to the prior art, and the embodiment will not be described.

In the example shown in fig. 1, the medical imaging apparatus includes two apparatus frames 3, a CT frame 31 and a PET frame 32, the CT frame 31 and the PET frame 32 are arranged along the axial direction of the scanning chamber 40, and the auxiliary acquisition system 1 is located between the CT frame 31 and the PET frame 32 and connected to the PET frame 32. Specifically, the base 13 is fixed on the back plate of the PET rack 32 through screws, so that the internal structure of the medical imaging device is more compact, the cable routing is convenient, and the overall size of the medical imaging device can be shortened. The structure can meet the requirements of CT and PET integrated scanning, and can also meet the requirements of independent CT scanning and independent PET scanning.

More preferably, the control module is further in communication connection with a driving system of the scanning bed 2, and the control module is configured to obtain information of a scanning part in the scanning protocol from the driving system of the scanning bed 2; such that the operation of the camera module 11, the projection module 12 and the radar module 15 (including but not limited to the rotation of the camera module 11, the projection module 12 and the radar module 15, respectively) and the medical scanning workflow form an interaction adapted to the movement of the scanning bed 2. Specifically, the scanning positions of different patients are different, the driving system of the scanning bed 2 has a selected scanning protocol before each scanning, the scanning protocol includes the scanning position and/or scanning posture at this time, and the auxiliary scanning system 1 acquires the information of the scanning position in the scanning protocol at this time through the interaction between the control module and the driving system of the scanning bed 2, so that the work of the camera module 11, the projection module 12 and the radar module 15 can be accurately matched with the movement of the scanning bed 2.

Further, the camera module 11, the projection module 12 and the radar module 15 are respectively in communication interaction with the control module, and the angles or the moving positions of the camera module 11, the projection module 12 and the radar module 15 are adjusted according to the scanning position and/or the scanning posture in the scanning protocol. The camera module 11, the projection module 12 and the radar module 15 can acquire information of a scanning part and/or a scanning body position in the scanning protocol through interaction with the control module, so that the rotation angles or the moving positions of the camera module 11, the projection module 12 and the radar module 15 are adapted to the scanning protocol.

The medical imaging apparatus provided by the present embodiment is described below with two exemplary usage scenarios.

Scene one: corresponding to different types of scanned objects.

The medical imaging device provided by the embodiment can be automatically adjusted in coordination with different scanned objects, and the camera module 11, the projection module 12 and the radar module 15 can be ensured to be matched with various different types of scanned objects. The specific implementation mode is as follows: the camera module 11, the projection module 12 and the radar module 15 are respectively in communication interaction with the control module, and are respectively driven to adapt to different types of scanned objects by acquiring information of a scanning part and/or a scanning body position in the scanning protocol.

Scene two: the method is applied to PET or CT scanning scenes.

When CT scanning is carried out, the control device can be adjusted to a CT scanning visual field according to a scanning mode, and because a scanned object moves along with a scanning bed during CT scanning, a monitored part also always moves and follows. At this time, the camera module 11, the projection module 12, and the radar module 15 may be adjusted to follow the scanned object by driving the first motor 141 and the second motor 161. The same reason as the above CT scan is applied when performing PET multi-bed scan, and the description is not repeated here.

It should be noted that the medical imaging apparatus shown in the above exemplary embodiment includes two CT racks 31 and two PET racks 32, and it should be understood that the auxiliary acquisition system provided in the present embodiment can also be applied to medical imaging apparatuses such as CT, MR, PET, SPECT, etc., and medical imaging apparatuses combining any two of them. The invention is not limited in this regard.

In summary, the medical imaging apparatus provided by the present invention includes: an auxiliary acquisition system; the auxiliary acquisition system comprises a camera module, a projection module, a processing module and a base; the camera module and the projection module are respectively arranged on the base, and are respectively in communication connection with the processing module; the projection module is used for irradiating a scanned object on a scanning bed so as to endow the surface of the scanned object with optical texture; the camera module is used for shooting the image of the scanned object irradiated by the projection module; the processing module obtains a physiological signal of the scanned object based on the image shot by the camera module; the medical imaging device acquires the physiological signal and triggers scanning according to the physiological signal.

So configured, the optical texture technology is adopted to collect physiological signals including respiration and heartbeat of a scanned object, when medical scanning is carried out, the patient is required to be relatively fixed and static in position, and the respiration or heartbeat of the patient can cause slight movement or fluctuation of a part to be scanned of the patient, so as to bring artifacts to a scanned image; the processing module 13 obtains the physiological signal and applies to the gate control triggering of the medical imaging device, and does not rely on depth data to obtain vital sign information, and can detect the physiological signal of the scanned object in any posture, and can accurately detect the physiological signal of the scanned object even when the skin is not exposed, thereby improving the imaging efficiency and the image precision of the medical imaging device. The mode of integrally setting the camera module in the auxiliary acquisition system is also favorable for simplifying the structure, reduces the overall size of equipment, and has low hardware cost and good reliability.

The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.