阅读说明：本技术 X射线成像系统 (X-ray imaging system ) 是由 汪令行 余文锐 马骏骑 于 2021-09-26 设计创作，主要内容包括：本公开提供了一种X射线成像系统,包括：X射线源,X射线源能够向成像对象发射X射线；X射线探测器,X射线探测器对经过成像对象的X射线进行探测以进行成像；处理装置,处理装置包括成像模式控制部,成像模式控制部基于接收的成像模式选择指令调取相应的成像模式控制参数组；控制装置,控制装置基于成像模式控制部调取的成像模式控制参数组至少控制X射线源及X射线探测器对成像对象进行成像,成像模式控制参数组至少包括X射线源移动控制参数；以及第一驱动装置,第一驱动装置基于X射线源移动控制参数对X射线源进行驱动,将X射线源驱动至目标位置。(The present disclosure provides an X-ray imaging system comprising: an X-ray source capable of emitting X-rays toward an imaging subject; an X-ray detector that detects X-rays passing through an imaging object to perform imaging; a processing device including an imaging mode control section that calls up a corresponding set of imaging mode control parameters based on a received imaging mode selection instruction; a control device for controlling at least the X-ray source and the X-ray detector to image the imaging object based on the imaging mode control parameter set called by the imaging mode control part, wherein the imaging mode control parameter set at least comprises an X-ray source movement control parameter; and the first driving device drives the X-ray source based on the X-ray source movement control parameter and drives the X-ray source to the target position.)

1. An X-ray imaging system, comprising:

an X-ray source capable of emitting X-rays toward an imaging subject;

an X-ray detector that detects X-rays passing through the imaging object to image;

a processing device including an imaging mode control section that invokes a corresponding set of imaging mode control parameters based on a received imaging mode selection instruction;

a control device that controls at least the X-ray source and the X-ray detector to image the imaging target based on an imaging mode control parameter set called by the imaging mode control unit, the imaging mode control parameter set including at least an X-ray source movement control parameter; and

and the first driving device drives the X-ray source based on the X-ray source movement control parameter, drives the X-ray source to a target position so that the X-ray source and the X-ray detector have a target distance, and enables the X-ray source and the X-ray detector to have a target imaging resolution and/or a target imaging visual field when imaging is carried out based on the imaging mode control parameter set called by the imaging mode control part.

2. The X-ray imaging system of claim 1, wherein the processing device further comprises a memory that stores two or more of the imaging mode parameters, the set of imaging mode control parameters being a set of imaging mode control parameters obtained based on a solution to the imaging mode parameters.

3. The X-ray imaging system of claim 1, further comprising a guiding device, wherein the X-ray source is disposed on the guiding device, and when the first driving device drives the X-ray source based on the X-ray source movement control parameter, the movement of the X-ray source is guided by the guiding device.

4. The X-ray imaging system of claim 1, wherein the processing device further comprises:

an imaging field of view adjustment unit that adjusts an imaging field of view control parameter in the set of imaging mode control parameters that the imaging mode control unit has called based on the received imaging mode selection instruction, based on the received imaging field of view adjustment instruction, to obtain an adjusted target imaging field of view; and

and the imaging resolution adjusting part adjusts the imaging resolution control parameters in the imaging mode control parameter group which is called by the imaging mode control part based on the received imaging mode selection instruction based on the received imaging resolution adjusting instruction so as to obtain the adjusted target imaging resolution.

5. The X-ray imaging system of claim 4, wherein the processing device further comprises an X-ray source movement control parameter adjusting part, wherein the X-ray source movement control parameter adjusting part adjusts the X-ray source movement control parameter based on the adjusted target imaging field of view and/or the adjusted target imaging resolution to obtain an adjusted X-ray source movement control parameter.

6. The X-ray imaging system of claim 5, wherein the first driving device drives the X-ray source to a target position based on the adjusted X-ray source movement control parameter, so that the X-ray source and the X-ray detector have a target distance, and so that the X-ray source and the X-ray detector have an adjusted target imaging resolution and/or an adjusted target imaging field of view when imaging based on the adjusted imaging mode control parameter set.

7. The X-ray imaging system of claim 1, wherein the X-ray detector is a flat panel detector.

8. The X-ray imaging system of claim 3, wherein the processing device further comprises a guide calibration portion that generates an orientation adjustment amount for the guide based on imaging data of the X-ray source and the X-ray detector for a calibration phantom, based on which the guide can be adjusted such that the orientation of the guide is perpendicular to a detection plane of the X-ray detector.

9. The X-ray imaging system of claim 8, wherein the imaging data of the X-ray source and the X-ray detector of the calibration phantom comprises a first set of imaging data acquired when the calibration phantom is in the first end position of the guide and a second set of imaging data acquired when the calibration phantom is in the second end position of the guide.

10. The X-ray imaging system of claim 8, wherein the pointing adjustment includes a guide first end spatial position adjustment obtained based on the first set of imaging data sets and a guide second end spatial position adjustment obtained based on the second set of imaging data sets and the first end spatial position adjustment.

Technical Field

The present disclosure belongs to the technical field of X-ray imaging, and particularly relates to an X-ray imaging system.

Background

There are three types of X-ray images mainly taken for oral examination, orthodontics, and the like, which are oral CBCT (Cone beam computed tomography), oral panoramic, and head positive lateral.

The three medical images are taken firstly by using three different devices respectively, and then three-in-one CT (computed tomography) equipment appears, namely CBCT, panoramic view and right-side position shooting can be completed on one machine. In the prior art, the devices are basically designed in the same way, one CT device needs to be configured with a plurality of detectors or detachable detectors (the detectors are installed at two positions with different distances from the X-ray source by detaching the detectors), and because CBCT, a panoramic film and a normal side film have different optimal distances from the X-ray source to the detectors, the devices are complex in structure, and the switching operation and control between different image shots are complex.

Moreover, the detector is one of the most costly components of the imaging device, and installing two or more detectors increases the manufacturing cost of the device.

Furthermore, the existing oral three-in-one imaging device determines the distance from the X-ray source to the detector and the distance from the X-ray source to the imaging object for each imaging, which means that the highest spatial resolution and the maximum imaging field of view are determined under the condition of certain hardware parameters. In practical imaging procedures, however, different imaging fields of view and spatial resolutions are often required.

Disclosure of Invention

To address at least one of the above technical problems, the present disclosure provides an X-ray imaging system.

The X-ray imaging system of the present disclosure is realized by the following technical solutions.

According to an aspect of the present disclosure, there is provided an X-ray imaging system including:

an X-ray source capable of emitting X-rays toward an imaging subject;

an X-ray detector that detects X-rays passing through the imaging object to image;

a processing device including an imaging mode control section that invokes a corresponding set of imaging mode control parameters based on a received imaging mode selection instruction;

a control device that controls at least the X-ray source and the X-ray detector to image the imaging target based on an imaging mode control parameter set called by the imaging mode control unit, the imaging mode control parameter set including at least an X-ray source movement control parameter; and the first driving device drives the X-ray source based on the X-ray source movement control parameter, drives the X-ray source to a target position, enables the X-ray source and the X-ray detector to have a target distance, and enables the X-ray source and the X-ray detector to have a target imaging resolution and/or a target imaging visual field when imaging is carried out based on the imaging mode control parameter set called by the imaging mode control part.

According to the X-ray imaging system of at least one embodiment of the present disclosure, the processing device further includes a memory storing two or more of the imaging mode control parameter sets.

According to the X-ray imaging system of at least one embodiment of the present disclosure, the memory stores two or more imaging mode parameters, and the imaging mode control parameter group is an imaging mode control parameter group obtained based on resolving the imaging mode parameters.

The X-ray imaging system according to at least one embodiment of the present disclosure further includes a guiding device, the X-ray source is disposed on the guiding device, and when the first driving device drives the X-ray source based on the X-ray source movement control parameter, the movement of the X-ray source is guided by the guiding device.

According to the X-ray imaging system of at least one embodiment of this disclosure, the processing apparatus further includes:

an imaging field of view adjustment unit that adjusts an imaging field of view control parameter in the set of imaging mode control parameters that the imaging mode control unit has called based on the received imaging mode selection instruction, based on the received imaging field of view adjustment instruction, to obtain an adjusted target imaging field of view; and an imaging resolution adjusting part which adjusts an imaging resolution control parameter in the set of imaging mode control parameters which is called by the imaging mode control part based on the received imaging mode selection instruction based on the received imaging resolution adjustment instruction so as to obtain the adjusted target imaging resolution.

According to the X-ray imaging system of at least one embodiment of the present disclosure, the processing device further includes an X-ray source movement control parameter adjusting unit, and the X-ray source movement control parameter adjusting unit adjusts the X-ray source movement control parameter based on the adjusted target imaging field of view and/or the adjusted target imaging resolution to obtain an adjusted X-ray source movement control parameter.

According to the X-ray imaging system of at least one embodiment of the present disclosure, the first driving device drives the X-ray source based on the adjusted X-ray source movement control parameter, drives the X-ray source to a target position, so that the X-ray source and the X-ray detector have a target distance, and so that the X-ray source and the X-ray detector have an adjusted target imaging resolution and/or an adjusted target imaging field of view when imaging based on the adjusted imaging mode control parameter set.

According to the X-ray imaging system of at least one embodiment of the present disclosure, the X-ray detector is a flat panel detector.

According to the X-ray imaging system of at least one embodiment of the present disclosure, the processing device further comprises a guide device calibration portion, the guide device calibration portion generates a direction adjustment amount for the guide device based on the imaging data of the X-ray source and the X-ray detector to a calibration phantom, and based on the direction adjustment amount, the guide device can be adjusted to enable the direction of the guide device to be perpendicular to the detection plane of the X-ray detector.

According to the X-ray imaging system of at least one embodiment of the present disclosure, the imaging data of the calibration phantom from the X-ray source and the X-ray detector includes a first set of imaging data and a second set of imaging data, the first set of imaging data is acquired when the calibration phantom is located at the first end position of the guiding device, and the second set of imaging data is acquired when the calibration phantom is located at the second end position of the guiding device.

According to the X-ray imaging system of at least one embodiment of the present disclosure, the direction adjustment amount includes a guide first end spatial position adjustment amount and a guide second end spatial position adjustment amount, the guide first end spatial position adjustment amount is obtained based on the first imaging data set, and the guide second end spatial position adjustment amount is obtained based on the second imaging data set and the first end spatial position adjustment amount.

According to the X-ray imaging system of at least one embodiment of the present disclosure, the calibration phantom includes a substrate and a plurality of markers, the substrate and the markers have different X-ray absorption coefficients, the number of the markers is a plurality, preferably 9 or more, and the markers are arranged on the substrate in a fixed position relationship, and the plurality of markers are not on the same plane.

In accordance with an X-ray imaging system of at least one embodiment of the present disclosure, the two or more sets of imaging mode parameters include any two or all of a CBCT imaging parameter set, a panoramic imaging parameter set, and a positive side imaging parameter set.

According to the X-ray imaging system of at least one embodiment of the present disclosure, the processing device further comprises an instruction receiving part which receives at least an input imaging mode selection instruction, a field of view adjustment instruction and/or an imaging resolution adjustment instruction.

According to the X-ray imaging system of at least one embodiment of the present disclosure, the instruction receiving portion receives an input imaging mode selection instruction, a field of view adjustment instruction, and/or an imaging resolution adjustment instruction via a touch screen, a keyboard device, and/or a mouse device.

An X-ray imaging system according to at least one embodiment of the present disclosure further comprises a second driving means, the set of imaging mode control parameters further comprises at least an imaging subject movement control parameter, the second driving means drives an imaging subject support carrying the imaging subject based on the imaging subject movement control parameter.

According to the X-ray imaging system of at least one embodiment of the present disclosure, the driving of the imaging object support carrying the imaging object by the second driving device includes driving the imaging object support to rotate.

According to the X-ray imaging system of at least one embodiment of the present disclosure, the driving of the imaging object support carrying the imaging object by the second driving device includes driving the imaging object support to rotate and/or translate.

The X-ray imaging system according to at least one embodiment of the present disclosure further comprises a third driving device, wherein the third driving device adjusts the orientation of the guiding device based on the first end space position adjustment amount and/or the second end space position adjustment amount.

According to the X-ray imaging system of at least one embodiment of the present disclosure, the processing device further comprises an image generation part which performs image generation on the imaging object based on the X-ray data acquired by the X-ray detector.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a block diagram schematic structure of an X-ray imaging system according to an embodiment of the present disclosure.

Fig. 2 is a block diagram schematic structure of an X-ray imaging system of yet another embodiment of the present disclosure.

Fig. 3 is a block diagram schematically illustrating the structure of a processing device of the X-ray imaging system according to an embodiment of the present disclosure.

Fig. 4 is a top view of an X-ray imaging system of one embodiment of the present disclosure.

FIG. 5 is a schematic structural diagram of a calibration phantom for use in an X-ray imaging system, according to one embodiment of the present disclosure.

Fig. 6 is a block diagram schematic structure of a processing device of a hardware implementation of an X-ray imaging system of one embodiment of the present disclosure.

Fig. 7 is a block diagram schematic structure of a processing device of a hardware implementation of an X-ray imaging system of yet another embodiment of the present disclosure.

Description of reference numerals:

10X-ray imaging system

100X-ray source

200X-ray detector

300 processing device

302 imaging mode control section

304 imaging visual field adjusting part

306 imaging resolution adjusting part

308X-ray source movement control parameter adjusting part

310 guide calibrating section

312 Command receiving part

314 image generating unit

400 control device

500 first driving device

600 guide device

700 second driving device

800 imaging object support

3100 bus

3200 processor

3300 memory

3400 other circuits.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. Technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the illustrated exemplary embodiments/examples are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Accordingly, unless otherwise indicated, features of the various embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concept of the present disclosure.

The use of cross-hatching and/or shading in the drawings is generally used to clarify the boundaries between adjacent components. As such, unless otherwise noted, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for a particular material, material property, size, proportion, commonality between the illustrated components and/or any other characteristic, attribute, property, etc., of a component. Further, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be practiced differently, the specific process sequence may be performed in a different order than that described. For example, two processes described consecutively may be performed substantially simultaneously or in reverse order to that described. In addition, like reference numerals denote like parts.

When an element is referred to as being "on" or "on," "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no intervening elements present. For purposes of this disclosure, the term "connected" may refer to physically, electrically, etc., and may or may not have intermediate components.

The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising" and variations thereof are used in this specification, the presence of stated features, integers, steps, operations, elements, components and/or groups thereof are stated but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximate terms and not as degree terms, and as such, are used to interpret inherent deviations in measured values, calculated values, and/or provided values that would be recognized by one of ordinary skill in the art.

The X-ray imaging system 10 of the present disclosure is explained in detail below with reference to fig. 1 to 7.

An X-ray imaging system 10 according to an embodiment of the present disclosure, with reference to fig. 1, includes:

an X-ray source 100, the X-ray source 100 being capable of emitting X-rays toward an imaging subject;

an X-ray detector 200, the X-ray detector 200 detecting X-rays passing through an imaging object to image;

a processing device 300, the processing device 300 including an imaging mode control portion 302, the imaging mode control portion 302 invoking a corresponding imaging mode control parameter set based on a received imaging mode selection instruction;

a control device (controller) 400, the control device 400 controlling at least the X-ray source 100 and the X-ray detector 200 to image an imaging object based on an imaging mode control parameter set called by the imaging mode control unit 302, the imaging mode control parameter set including at least an X-ray source movement control parameter; and a first driving device 500, wherein the first driving device 500 drives the X-ray source 100 based on the X-ray source movement control parameter, drives the X-ray source 100 to the target position, and enables the X-ray source 100 and the X-ray detector 200 to have the target imaging resolution and/or the target imaging field of view when imaging is performed based on the imaging mode control parameter set called by the imaging mode control unit 302, and the X-ray source 100 and the X-ray detector 200 have the target distance from the X-ray detector 200.

Among them, the imaging subject may be a head, a lower jaw, or the like of a human body.

The target imaging resolution, i.e., the desired imaging resolution, and the target imaging field of view, i.e., the desired imaging field of view, are described above.

The processing apparatus 300 may be a computer device or the like having a processing function.

With the X-ray imaging system 10 of the above embodiment, preferably, the processing device 300 further includes a memory 3300, and the memory 3300 stores more than two imaging mode control parameter sets.

According to a preferred embodiment of the present disclosure, the memory 3300 stores two or more imaging mode parameters, and the above-described imaging mode control parameter set is generated based on resolving the imaging mode parameters.

The X-ray imaging system 10 according to the preferred embodiment of the present disclosure, referring to fig. 2, further includes a guiding device 600, the X-ray source 100 is disposed on the guiding device 600, and when the first driving device 500 drives the X-ray source 100 based on the X-ray source 100 movement control parameter, the movement of the X-ray source 100 is guided by the guiding device 600.

Wherein the guiding device 600 comprises a guiding rail device on which the X-ray source 100 can be arranged by means of an X-ray source holder.

Referring to fig. 4, taking CBCT of the oral cavity as an example of the X-ray imaging system 10, the data sources for panoramic imaging of the oral cavity and frontal position imaging of the skull are both X-ray projection views, taking CBCT as an example, the imaging top view is shown in fig. 4, the distance from the X-ray source 100 to the X-ray detector 200 is L1, the X-ray source 100 can move along the guiding device 600 (e.g. the guiding rail device), so that L1 is variable, and the distance from the rotation axis of the support of the imaging object to the X-ray detector 200 is L2; the radius of the field of view for CBCT imaging is R. The X-ray detector 200 has a pixel side length a and a detector width W.

Imaging field of view radius:

magnification factor within the imaging field of view:

then the equivalent minimum resolution length:

it follows that by moving the X-ray source 100, the size of the L1, and thus the size of the imaging field of view and the spatial imaging resolution, can be changed, with the imaging field of view increasing as L1 increases, the minimum resolution length increasing, and the resolution decreasing; conversely, the imaging field of view is reduced, the minimum resolution length is reduced, and the resolution is improved.

In different imaging requirements, the requirements for field of view and resolution are different, and the technical scheme of the disclosure realizes that the imaging field of view and resolution are adjusted by moving the X-ray source 100.

For the X-ray imaging system 10 of each of the above embodiments, preferably, the two or more sets of imaging mode parameters described above include any two or all of a CBCT imaging parameter set, a panoramic imaging parameter set, and a positive lateral imaging parameter set.

That is, the X-ray imaging system 10 of the present disclosure enables a three-in-one X-ray imaging system by storing three sets of imaging mode parameters in memory.

For the X-ray imaging system 10 of each of the above embodiments, preferably, referring to fig. 3, the processing device 300 further includes:

an imaging field of view adjustment unit 304, wherein the imaging field of view adjustment unit 304 adjusts the imaging field of view control parameter in the set of imaging mode control parameters that the imaging mode control unit 302 calls based on the received imaging mode selection instruction, based on the received imaging field of view adjustment instruction, to obtain an adjusted target imaging field of view; and an imaging resolution adjusting section 306, wherein the imaging resolution adjusting section 306 adjusts the imaging resolution control parameter in the set of imaging mode control parameters that the imaging mode control section 302 calls based on the received imaging mode selection instruction based on the received imaging resolution adjustment instruction, so as to obtain the adjusted target imaging resolution.

The imaging field control parameters at least comprise imaging field size control parameters, and the imaging resolution control parameters at least comprise imaging resolution size control parameters.

For the X-ray imaging system 10 of each of the above embodiments, preferably, referring to fig. 3, the processing device 300 further includes an X-ray source movement control parameter adjusting unit 308, and the X-ray source movement control parameter adjusting unit 308 adjusts the X-ray source movement control parameter based on the adjusted target imaging field of view and/or the adjusted target imaging resolution to obtain the adjusted X-ray source movement control parameter.

For the X-ray imaging system 10 of each of the above embodiments, preferably, the first driving device 500 drives the X-ray source 100 based on the adjusted X-ray source movement control parameter, drives the X-ray source 100 to the target position, so that the X-ray source 100 and the X-ray detector 200 have the target distance, and so that the X-ray source 100 and the X-ray detector 200 have the adjusted target imaging resolution and/or the adjusted target imaging field of view when imaging based on the adjusted imaging mode control parameter set.

Preferably, the X-ray detector 200 of the X-ray imaging system 10 is a flat panel detector.

Among them, the detection plane of the X-ray detector 200 is preferably rectangular or square.

For the X-ray imaging system 10 of each of the above embodiments, preferably, the processing device 300 further includes a guiding device calibration portion 310, the guiding device calibration portion 310 generates a pointing adjustment amount for the guiding device 600 based on imaging data of the X-ray source 100 and the X-ray detector 200 to the calibration phantom, and based on the pointing adjustment amount, the guiding device 600 can be adjusted such that the pointing direction of the guiding device 600 is perpendicular to the detection plane of the X-ray detector 200.

The imaging data of the calibration phantom from the X-ray source 100 and the X-ray detector 200 include a first set of imaging data and a second set of imaging data, the first set of imaging data is obtained when the calibration phantom is located at the first end position (end a in fig. 4) of the guiding device 600, and the second set of imaging data is obtained when the calibration phantom is located at the second end position (end B in fig. 4) of the guiding device 600.

Preferably, the above-described pointing adjustment amount includes a guide first end spatial position adjustment amount obtained based on the first imaging data set and a guide second end spatial position adjustment amount obtained based on the second imaging data set and the first end spatial position adjustment amount.

The calibration phantom comprises a base body and a plurality of markers, the markers are arranged on the base body, the base body and the markers have different X-ray absorption coefficients, the number of the markers is more than 9, and the position relation among the markers is fixed. Among them, the substrate is preferably in the shape of a flat plate.

Preferably, all of the markers are not disposed on the same plane (parallel to the plane of the substrate).

Of course, the markers may also be uniformly arranged on the substrate, for example as shown in FIG. 5.

The matrix of the calibration phantom of the present disclosure is preferably a plastic material, and the markers are preferably metal beads or metal spheres, such as iron, copper, steel, and the like.

The following describes a calibration method based on the calibration phantom with reference to fig. 5:

(1) moving the X-ray source 100 to a point A of the guide rail, arranging the calibration phantom in an imaging view, exposing to obtain projection imaging of the calibration phantom, constructing a coordinate system by using an X-ray detector plane, and obtaining the position of an imaging point of the marker according to imaging of the X-ray detector 200; because the calibration die body is a rigid body and the position relation of each marker is fixed, the spatial positions of all the markers can be described only by 6 parameters (three-dimensional coordinates of the central point of the calibration die body (plastic flat plate) and three-dimensional deflection angles of the central point of the calibration die body relative to the central point of the plane of the detector); the X-ray source 100 is regarded as a point X-ray source and requires three degrees of freedom for description, from which it can be seen that the X-ray imaging system requires 9 parameter determinations. The X-ray propagates along a straight line, so that the X-ray source, the marker and the corresponding imaging point are on the same straight line, an equation can be formed, and 9 equations can be formed. The position of the X-ray source 100 can be calculated as long as the number of markers in the imaging field of view is 9 or more.

(2) After the position of the X-ray source 100 at point a is obtained, the guiding device 600 (e.g., a guiding rail device) is moved so that the vertical line from the X-ray source 100 to the X-ray detector 200 is perpendicular to the center of the detector plane, and the point a of the guiding device is fixed so that the guiding device can rotate around the point a.

(3) Moving the X-ray source 100 to the point B, calculating the position of the X-ray source 100 at the point B by the same method as the step (1), and rotating the guiding device 600 to ensure that the vertical point from the X-ray source to the detector can be at the center of the plane of the detector, thereby completing the calibration.

According to one aspect of the disclosure, a calibration phantom is provided, which includes a substrate and markers, the substrate and the markers have different X-ray absorption rates, the number of the markers is more than 9, and the markers are uniformly arranged on the substrate.

For the X-ray imaging system 10 of each of the above embodiments, referring to fig. 3, the processing device 300 further includes an instruction receiving portion 312, and the instruction receiving portion 312 receives at least an input imaging mode selection instruction, a field of view adjustment instruction, and/or an imaging resolution adjustment instruction.

Preferably, the instruction receiving part 312 receives an input imaging mode selection instruction, a field of view adjustment instruction, and/or an imaging resolution adjustment instruction via a touch screen, a keyboard device, and/or a mouse device.

For the X-ray imaging system 10 of each of the above embodiments, preferably, referring to fig. 2, further comprising a second driving device 700, the imaging mode control parameter group further comprises at least an imaging object movement control parameter, and the second driving device 700 drives the imaging object support 800 carrying the imaging object based on the imaging object movement control parameter.

Preferably, the driving of the imaging target support 800 carrying the imaging target by the second driving device 700 includes driving the imaging target support 800 to rotate.

Wherein the rotating includes driving the imaging object support 800 to perform a uniform rotation, a uniform acceleration rotation, and/or a uniform deceleration rotation.

The X-ray imaging system 10 according to the preferred embodiment of the present disclosure further includes a third driving device (not shown) that adjusts the pointing direction of the guide 600 based on the first end spatial position adjustment amount and/or the second end spatial position adjustment amount described above.

With regard to the X-ray imaging system 10 of each of the above embodiments, preferably, the processing device 300 further includes an image generating part 314, and the image generating part 314 performs image generation on the imaging object based on the X-ray data acquired by the X-ray detector 200.

The image generating part 314 may include a CBCT imaging module, a panoramic imaging module, and a positive side imaging module.

The X-ray imaging system of the present disclosure is described below in conjunction with a specific imaging modality.

(1) The X-ray imaging system 10 performs imaging based on a CBCT imaging module, including: the operator determines that the image to be taken is oral cavity CBCT (imaging mode), determines the size and position of the imaging field of view and the imaging definition according to the imaging requirements, and inputs a control command to the processing device 300 (for example, a terminal computer).

The processing device 300 generates control parameters, which include calculating the distance from the X-ray source 100 to the X-ray detector 200, and determining the motion state, the shooting time and the number of shots of the imaging object during shooting according to the imaging definition (resolution) requirement. These data are transmitted to the control device 400.

The control device 400 receives the control parameter, and first controls the X-ray source 100 to move to a designated position according to the distance from the X-ray source 100 to the X-ray detector 200.

The imaging object is positioned, a shooting start instruction is sent by the processing device 300, the control device 400 receives the instruction to control the X-ray source 100, the imaging object motion system (the second driving device and the supporting part) and the X-ray detector 200 to complete the collection of the X-ray projection images, and the CBCT generally needs to collect a series of projection images at different projection angles.

The processing device 300 sends a shooting start command and simultaneously sends a CBCT image generation command to the CBCT imaging module of the image generation unit 314, and the CBCT imaging module receives the image output of the X-ray detector 200 and the geometric relationship parameters during image acquisition to complete three-dimensional CT data reconstruction. The reconstructed result may be saved to the memory of the processing device 300 for recall, display, and processing.

(2) The X-ray imaging system 10 performs imaging based on a panoramic imaging module, and comprises: the operator determines that the image to be shot is an oral panoramic image (imaging mode), determines the size and position of the imaging view field and the imaging definition requirement according to the imaging requirement, and inputs a control command into the processing device 300 (such as a terminal computer).

The processing device 300 generates control parameters, which include calculating the distance from the X-ray source 100 to the X-ray detector 200, and determining the motion state, the shooting time and the number of shots of the imaging object during shooting according to the imaging definition (resolution) requirement. These data are transmitted to the control device 400.

The control device 400 receives the control parameter, and first controls the X-ray source 100 to move to a designated position according to the distance from the X-ray source 100 to the X-ray detector 200.

The imaging object is positioned, a shooting start instruction is sent by the processing device 300, the control device 400 receives the instruction to control the X-ray source 100, the imaging object motion system (the second driving device and the supporting part) and the X-ray detector 200 to complete the acquisition of the X-ray projection images, and the panoramic imaging shooting process is, for example, to acquire a series of projection images along the direction of the dental arch curve.

The processing device 300 sends a shooting start instruction and simultaneously sends a panoramic image generation instruction to the panoramic imaging module of the image generation part 314, the panoramic imaging module receives the image output of the X-ray detector 200 and the geometric relation parameters during image acquisition to complete the panoramic image generation, and the result can be stored in the memory of the processing device 300 for calling, displaying and processing.

(3) The X-ray imaging system 10 performs imaging based on a positive lateral position imaging module, and includes: the operator determines that the image to be captured is the head right side imaging (imaging mode), determines the size and position of the imaging view field and the imaging definition according to the imaging requirement, and inputs a control command into the processing device 300 (such as a terminal computer).

The processing device 300 generates control parameters including the distance from the X-ray source 100 to the X-ray detector 200, and transmits the control parameters to the control device 400.

The control device 400 receives the control parameter, and first controls the X-ray source 100 to move to a designated position according to the distance from the X-ray source 100 to the X-ray detector 200.

The imaging object is positioned, a shooting start instruction is sent out through the processing device 300, and the control device receives the instruction to control the X-ray source and the X-ray detector to complete the acquisition of the X-ray projection drawing. And after the imaging object is controlled by the imaging object motion system to rotate by 90 degrees, the control device controls the X-ray source and the X-ray detector to finish the acquisition of the X-ray projection graph again.

The processing device 300 sends a shooting start instruction and simultaneously sends a positive side image generation instruction to the positive side imaging module in the image generation part 314, the positive side imaging module receives the geometric relation parameters during image output and image acquisition of the X-ray detector 200 to complete the generation of the positive side image, and the result can be stored in the memory of the processing device 300 for calling, displaying and processing.

The X-ray imaging system of the present disclosure has a simple structure and low manufacturing cost, the structure of the motion control system is greatly simplified compared with the prior art, and only one detector and one radiation source are needed.

The X-ray imaging system can complete more than two shooting modes, for example, the position of the radiation source only needs to be moved when three kinds of shooting are switched, and the shooting is completed in a short time under the assistance of the motion control system.

Fig. 6 and 7 respectively show schematic block diagrams of the structures of processing devices of hardware implementations of X-ray imaging systems of two embodiments of the present disclosure.

The processing means may comprise respective modules for performing each or several of the steps described above. Thus, each or several of the above-described steps may be performed by respective modules, and the processing means may comprise one or more of these modules. The modules may be one or more hardware modules specifically configured to perform the respective steps, or implemented by a processor configured to perform the respective steps, or stored within a computer-readable medium for implementation by a processor, or by some combination.

The hardware architecture may be implemented using a bus architecture. The bus architecture may include any number of interconnecting buses and bridges depending on the specific application of the hardware and the overall design constraints. Bus 3100 couples various circuits including one or more processors 3200, memory 3300, and/or hardware modules together. The bus 3100 may also connect various other circuits 3400 such as peripherals, voltage regulators, power management circuits, external antennas, and the like.

The bus 3100 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one connection line is shown, but no single bus or type of bus is shown.

For the purposes of this description, a "readable storage medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the readable storage medium include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable read-only memory (CDROM). In addition, the readable storage medium may even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in the memory.

It should be understood that portions of the present disclosure may be implemented in hardware, software, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

It will be understood by those skilled in the art that all or part of the steps of the method implementing the above embodiments may be implemented by hardware that is instructed to be associated with a program, which may be stored in a readable storage medium, and which, when executed, includes one or a combination of the steps of the method embodiments.

In addition, each functional unit in the embodiments of the present disclosure may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a readable storage medium. The storage medium may be a read-only memory, a magnetic or optical disk, or the like.

In the description herein, reference to the description of the terms "one embodiment/implementation," "some embodiments/implementations," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/implementation or example is included in at least one embodiment/implementation or example of the present application. In this specification, the schematic representations of the terms described above are not necessarily the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" 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, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.