阅读说明：本技术 放射线摄影装置 (Radiographic apparatus ) 是由 池田佑司 三分一正人 堀内久嗣 松浦正佳 今村亮 于 2019-09-26 设计创作，主要内容包括：本发明提供一种放射线摄影装置,其消除了可以用一个臂支撑放射线源和放射线摄影部的放射线摄影装置的不便,并且提高了便利性。放射线摄影装置(10)具备操作控制部(101),在放射线产生部(22)相对于放射线摄影部(23)处于相对铅垂向下的方向的情况下,将使用第1操作部(41)进行的准直器(73)的操作设为无效,并且,在放射线产生部(22)相对于放射线摄影部(23)处于相对铅垂向上的方向的情况下,将使用第1操作部(41)进行的准直器(73)的操作设为有效。(The present invention provides a radiographic apparatus which eliminates inconvenience of the radiographic apparatus that can support a radiation source and a radiographic section with one arm and improves convenience. The radiographic imaging device (10) is provided with an operation control unit (101) which disables the operation of the collimator (73) by using the 1 st operation unit (41) when the radiation generation unit (22) is in a direction perpendicular to the lead with respect to the radiographic imaging unit (23), and enables the operation of the collimator (73) by using the 1 st operation unit (41) when the radiation generation unit (22) is in a direction perpendicular to the lead with respect to the radiographic imaging unit (23).)

1. A radiographic apparatus includes:

a radiation generating unit having a radiation source for generating radiation, a collimator for adjusting an irradiation range of the radiation, and a 1 st operating unit for operating the collimator;

a radiation imaging unit that images an object by using the radiation;

a support section that supports at least the radiation generating section when the subject is imaged; and

and an operation control unit that disables the operation of the collimator by the 1 st operation unit when the radiation generating unit is oriented in a direction perpendicular to lead with respect to the radiographic imaging unit, and enables the operation of the collimator by the 1 st operation unit when the radiation generating unit is oriented in the direction perpendicular to lead with respect to the radiographic imaging unit.

2. A radiographic apparatus includes:

a radiation generating unit having a radiation source for generating radiation, a collimator for adjusting an irradiation range of the radiation, and a 1 st operating unit for operating the collimator;

a radiation imaging unit that images an object by using the radiation;

a support section that supports at least the radiation generating section when the subject is imaged; and

and an operation control unit configured to enable the operation of the collimator by the 1 st operation unit in a still image shooting mode for shooting a still image of the subject, and disable the operation of the collimator by the 1 st operation unit in a moving image shooting mode for shooting a moving image of the subject.

3. A radiographic apparatus includes:

a radiation generating unit having a radiation source for generating radiation, a collimator for adjusting an irradiation range of the radiation, and a 1 st operating unit for operating the collimator;

a radiation imaging unit that images an object by using the radiation;

a support section that supports at least the radiation generating section when the subject is imaged; and

and an operation control unit configured to disable an operation performed by the 1 st operation unit when the support unit has the radiographic unit attached thereto, and to enable an operation performed by the 1 st operation unit when the support unit has no radiographic unit attached thereto.

4. The radiographic apparatus according to claim 1,

the radiographic apparatus includes a posture detection unit that detects a posture of the support unit,

the operation control section obtains information on a position of the radiation generating section using a detection result of the posture detecting section.

5. The radiographic apparatus according to any one of claims 1 to 4,

the collimator includes a 1 st limiting section that limits an irradiation range of the radiation and a 2 nd limiting section that further limits the irradiation range of the radiation limited by the 1 st limiting section,

the 1 st operation unit is an operation unit that operates the 2 nd restriction unit.

6. The radiographic apparatus of claim 5,

the radiographic apparatus includes a drive control unit for automatically driving the 1 st limiting unit,

in the case where the operation control unit validates the operation performed using the 1 st operation unit, the drive control unit alleviates the limitation of the irradiation range of the radiation by the 1 st limiting unit, compared to the case where the operation control unit invalidates the operation performed using the 1 st operation unit.

7. The radiographic apparatus according to any one of claims 1 to 6,

a2 nd operation part for operating the collimator is provided to the main body to which the support part is attached.

8. The radiographic apparatus according to any one of claims 1 to 7,

the radiographic apparatus includes a rotation control unit that enables or disables rotation of the radiation generating unit with respect to the support unit.

9. The radiographic apparatus according to any one of claims 1 to 8,

the radiographic apparatus includes:

an irradiation range display unit that displays, using visible light, an irradiation range of the radiation adjusted by the collimator; and

and a display control unit that enables or disables the display of the irradiation range of the radiation by the irradiation range display unit, based on a position of the radiation generation unit.

Technical Field

The present invention relates to a radiographic apparatus.

Background

In a radiation imaging apparatus, a radiation source that generates radiation and a radiation imaging unit that images a subject using the radiation are supported by one arm, and a relative positional relationship between the radiation source and the radiation imaging unit is defined. For example, an X-ray imaging apparatus is known in which an X-ray source and an X-ray imaging panel are supported by a C-arm.

In recent years, it has been known that, even in a radiation imaging apparatus of a type in which a radiation source and a radiation imaging unit are supported by one arm, radiation imaging can be performed in a state in which the radiation source or the radiation imaging unit is removed from the arm (patent document 1).

Prior art documents

Patent document

Patent document 1: japanese patent laid-open publication No. 2013-128593

Disclosure of Invention

Technical problem to be solved by the invention

When the radiation source and the radiation imaging unit are supported by one arm, the relative positions of the radiation source and the radiation imaging unit are fixed, and therefore, there is an advantage that alignment between the radiation source and the radiation imaging unit is not necessary.

However, in the radiation imaging apparatus of the type in which the radiation source and the radiation imaging unit are supported by one arm, when the arm is operated in accordance with the position of the radiation source or the like, a person or an object may inadvertently touch the operation unit provided on the arm, which may cause inconvenience such as a need to readjust imaging conditions once adjusted.

Further, when the radiation source or the radiation imaging unit is removed from the arm and used, there is inconvenience such as a larger number of adjustment items than in a radiation imaging apparatus in which the radiation source or the radiation imaging unit is supported by a different arm or the like depending on the arrangement of the radiation source or the radiation imaging unit.

Accordingly, an object of the present invention is to provide a radiographic apparatus that eliminates inconvenience of a radiographic apparatus that can support a radiation source and a radiographic section with one arm, and improves convenience.

Means for solving the technical problem

A radiographic imaging device of the present invention includes: a radiation generating unit having a radiation source for generating radiation, a collimator for adjusting an irradiation range of the radiation, and a 1 st operating unit for operating the collimator; a radiation imaging section that images an object using radiation; a support section that supports at least the radiation generating section when the subject is imaged; and an operation control unit that disables the operation of the collimator by the 1 st operation unit when the radiation generating unit is oriented in a direction perpendicular to the lead with respect to the radiographic unit, and enables the operation of the collimator by the 1 st operation unit when the radiation generating unit is oriented in the direction perpendicular to the lead with respect to the radiographic unit.

Another radiographic imaging apparatus of the present invention includes: a radiation generating unit having a radiation source for generating radiation, a collimator for adjusting an irradiation range of the radiation, and a 1 st operating unit for operating the collimator; a radiation imaging section that images an object using radiation; a support section that supports at least the radiation generating section when the subject is imaged; and an operation control unit that, in a still image photographing mode for photographing a still image of the subject, activates the operation of the collimator by the 1 st operation unit, and, in a moving image photographing mode for photographing a moving image of the subject, deactivates the operation of the collimator by the 1 st operation unit.

Another radiographic imaging apparatus according to the present invention preferably includes: a radiation generating unit having a radiation source for generating radiation, a collimator for adjusting an irradiation range of the radiation, and a 1 st operating unit for operating the collimator; a radiation imaging section that images an object using radiation; a support section that supports at least the radiation generating section when the subject is imaged; and an operation control unit that disables the operation performed by the 1 st operation unit when the support unit has the radiographic unit attached thereto, and enables the operation performed by the 1 st operation unit when the support unit has no radiographic unit attached thereto.

Preferably, the radiographic imaging device of the present invention includes a posture detection unit that detects the posture of the support unit, and the operation control unit obtains information on the position of the radiation generation unit using the detection result of the posture detection unit.

Preferably, the collimator includes a 1 st limiting portion that limits an irradiation range of the radiation and a 2 nd limiting portion that further limits the irradiation range of the radiation limited by the 1 st limiting portion, and the 1 st operating portion is an operating portion that operates the 2 nd limiting portion.

Preferably, the radiographic imaging apparatus of the present invention includes a drive control unit that automatically drives the 1 st limiting unit, and the drive control unit alleviates the limitation of the irradiation range of the radiation by the 1 st limiting unit when the operation control unit validates the operation performed using the 1 st operating unit, as compared to when the operation control unit invalidates the operation performed using the 1 st operating unit.

Preferably, the 2 nd operating unit for operating the collimator is provided in the main body to which the support unit is attached.

The radiographic imaging apparatus of the present invention preferably includes a rotation control unit that enables or disables rotation of the radiation generating unit with respect to the support unit.

Preferably, the radiographic imaging apparatus of the present invention includes: an irradiation range display unit that displays, using visible light, an irradiation range of the radiation adjusted by the collimator; and a display control unit that enables or disables display of the irradiation range of the radiation by the irradiation range display unit, based on the position of the radiation generation unit.

Effects of the invention

According to the present invention, it is possible to provide a radiographic apparatus that eliminates inconvenience of a radiographic apparatus that can support a radiation source and a radiographic section with one arm, and that improves convenience.

Drawings

Fig. 1 is a schematic diagram of a radiographic apparatus.

Fig. 2 is a radiographic apparatus of the sliding C-arm.

Fig. 3 is a radiographic apparatus that rotates the C-arm.

Fig. 4 is a schematic diagram when the radiographic panel is separated for imaging.

Fig. 5 is a block diagram of the radiation generating section.

Fig. 6 is a perspective view showing the structure of the collimator.

Fig. 7 is a sectional view showing the structure of the collimator.

Fig. 8 is an explanatory view showing the detection effective region and the irradiation range of the radiation.

Fig. 9 is a block diagram of the radiographic imaging apparatus.

Fig. 10 is a block diagram of the photographing unit body.

Fig. 11 is a block diagram of the control section.

Fig. 12 is a flowchart showing the operation.

Fig. 13 is an explanatory diagram showing a configuration for detecting the posture of the C-arm.

Fig. 14 is a block diagram of a control unit having a drive control unit.

Fig. 15 is a block diagram of a control unit having a rotation control unit.

Fig. 16 is an explanatory diagram illustrating a lock mechanism of the radiation generating section.

Fig. 17 is a block diagram of a control unit having a display control unit.

Fig. 18 is a flowchart showing a control method.

Fig. 19 is a flowchart showing a control method.

Detailed Description

As shown in fig. 1, the radiographic imaging device 10 includes an imaging unit 11 and a display unit 12. The imaging unit 11 is a unit that generates radiation and photographs an object 15 (refer to fig. 4) using the radiation. The display unit 12 is a unit that displays a radiographic image or the like captured using the imaging unit 11.

The imaging unit 11 includes an imaging unit main body 21, a radiation generating unit 22, a radiation imaging unit 23, and a C-arm 25.

The imaging unit main body 21 collectively controls operations of the radiation generating section 22, the radiographic section 23, the C-arm 25, and the like. The imaging unit main body 21 is connected to the display unit 12 by wire or wireless. In the present embodiment, the photographing unit body 21 is wired to the display unit 12 using a cable 31. Thereby, the imaging unit 11 supplies the radiographic image, the electric power, and the like to the display unit 12. The display unit 12 includes a display unit main body 36 and a display 37 for displaying a radiographic image and the like. Casters 27 are attached to the photographing unit body 21 and the display unit body 36. Therefore, the radiographic imaging apparatus 10 is movable, and can perform radiography in a ward where a patient as the subject 15 is located, for example.

The radiation generating unit 22 generates radiation when performing radiography. The radiation generating unit 22 is rotatably attached to one end of the C-arm 25. In the present embodiment, the radiation generating section 22 is rotatable within the plane of the C-arm 25. For example, when the C-arm 25 is disposed in the XZ plane (see fig. 1), the radiation generating unit 22 can rotate in the XZ plane direction. The radiation generating section 22 includes a 1 st operation section 41. The 1 st operation unit 41 is an operation unit for operating the radiation generating unit 22, and may be activated or deactivated depending on the use of the radiographic imaging apparatus 10. In the present embodiment, the radiation generated by the radiation generating unit 22 is X-rays, but the radiation generating unit 22 may be replaced with a configuration that generates radiation other than X-rays.

The radiation imaging unit 23 is detachably attached to the other end (the end opposite to the end to which the radiation generating unit 22 is attached) of the C-arm 25. The radiation imaging section 23 images the subject 15 using the radiation generated by the radiation generating section 22. The attachment/detachment detection unit 42 is a unit that detects attachment/detachment of the radiographic imaging unit 23, and is, for example, a switch unit that is turned on when the radiographic imaging unit 23 is attached. The attachment/detachment detection unit 42 is incorporated in the end portion of the C-arm 25 to which the radiation imaging unit 23 is attached in the present embodiment. The attachment and detachment of the radiation imaging unit 23 include attachment and detachment of a part of the components of the radiation imaging unit 23. The detachable detection unit 42 can detect the size (so-called panel size) of a detection effective region 81 (see fig. 8) of the radiation imaging unit 23 in addition to the detachable operation of the radiation imaging unit 23.

The C-arm 25 is held at a position where the radiation generating section 22 and the radiographic section 23 face each other (hereinafter, referred to as a facing position) in principle. That is, the C-arm 25 constitutes a support portion that supports at least the radiation generating section 22 when the subject is imaged. Specifically, when both the radiation generating section 22 and the radiographic section 23 are attached, the C-arm 25 holds the radiation generating section 22 and the radiographic section 23 in face-to-face positions. However, the radiographic imaging device 10 can take radiographs by removing the radiographic imaging unit 23 from the C-arm 25. Therefore, when the radiographic imaging unit 23 is removed from the C-arm 25 and radiographic imaging is performed, the C-arm 25 holds the radiation generating unit 22 at an arbitrary position and direction (generally, at a position facing the radiographic imaging unit 23). In addition, the facing position is a position at which the radiation imaging section 23 can capture the radiation generated by the radiation generating section 22 substantially vertically. The "substantially vertical" allows the radiation generating section 22 and/or the radiation imaging section 23 to be tilted within a range that does not affect imaging of the subject 15, and the like.

The C-arm 25 is connected to a lifting mechanism 52 via a slide mechanism 51. The slide mechanism 51 holds the C-arm 25 to be slidable (slidable) in an arc shape. By sliding the C-arm 25 by the slide mechanism 51, the radiation generating section 22 and the radiographic section 23 can rotate around the center of the C-arm 25 (the center of the "C" shape as an arc) while maintaining the facing positions. For example, as shown in fig. 1, when the radiation generating section 22 and the radiographic section 23 are disposed in the XZ plane, the C arm 25 and the radiation generating section 22 and the radiographic section 23 attached to the C arm 25 can be rotated about the Y axis by sliding the C arm 25 by the slide mechanism 51.

The slide mechanism 51 is rotatably attached to a lifting mechanism 52, and the lifting mechanism 52 is attached to the imaging unit main body 21 so as to be lifted in the vertical direction (Z-axis direction). Therefore, the C-arm 25 can freely rotate about a specific direction (X-axis) in the horizontal plane. The C-arm 25, and the radiation generating unit 22 and the radiographic unit 23 attached to the C-arm 25 can be arbitrarily moved in the vertically upward direction (positive Z-axis direction) or the vertically downward direction (negative Z-axis direction) by moving the lifting mechanism 52 upward and downward.

In addition to the above, the photographing unit body 21 includes the 2 nd operation unit 61. The 2 nd operation unit 61 is an operation unit that operates each unit of the imaging unit main body 21 including the radiation generating unit 22. That is, the 2 nd operation unit 61 is an operation unit capable of operating at least the collimator 73, and is provided on the photographing unit main body 21 to which the C-arm 25 as a support portion is attached. In addition, the operation performed using the 2 nd operating part 61 is valid regardless of whether the 1 st operating part 41 is valid or invalid. The operation of each unit such as the collimator 73 using the 2 nd operation unit 61 can be performed at an arbitrary timing.

The radiographic imaging device 10 configured as described above can capture the subject 15 by a still image or a moving image using radiation. That is, the radiographic apparatus 10 has a still image photographing mode for photographing a still image of the subject 15 using radiation and a moving image photographing mode for photographing a moving image of the subject 15 using radiation. In the present embodiment, as shown in fig. 1 and 2, the moving image is captured by disposing the radiation generating section 22 substantially vertically downward (Z-axis negative direction) with respect to the radiation imaging section 23, and disposing the radiation imaging section 23 substantially vertically upward (Z-axis positive direction) with respect to the radiation generating section 22. On the other hand, as shown in fig. 3 and 4, the still image is captured by disposing the radiation generating section 22 substantially vertically upward with respect to the radiographic section 23. As shown in fig. 4, the still image can be captured with the radiographic imaging unit 23 removed from the C-arm 25. In this case, the radiation imaging section 23 is disposed behind the subject 15 (on the negative side in the Z direction of the subject 15 in fig. 4) when viewed from the radiation generating section 22.

As shown in fig. 5, the radiation generating unit 22 includes a drive circuit 71, a radiation source 72, a collimator 73, an irradiation range display unit 74, and a 1 st operation unit 41.

The drive circuit 71 is a drive circuit that drives the radiation source 72, and is a so-called high voltage generation circuit. The drive circuit 71 supplies power necessary for generating radiation to the radiation source 72. The high voltage in the drive circuit 71 is a voltage required for the radiation source 72 to generate radiation.

The radiation source 72 receives supply of necessary electric power from the drive circuit 71 to generate radiation. In the present embodiment, the radiation source 72 is an X-ray source that generates X-rays. In the present embodiment, the radiation source 72 and the drive circuit 71 are integrally configured to form a so-called single groove 75 (see fig. 1).

The collimator 73 is a mechanism that adjusts the irradiation range of the radiation generated by the radiation source 72. In the radiographic imaging device 10, the irradiation range of radiation can be appropriately changed by using the collimator 73 in accordance with imaging conditions and the like. The collimator 73 is disposed in a direction (the radiographic unit 23 side) in which the radiation source 72 (the single groove 75) emits radiation.

As shown in fig. 6, the collimator 73 includes a 2 nd limiting unit 77 and a 1 st limiting unit 76 in this order from the radiation source 72 side along a radiation direction (hereinafter, referred to as a radiation axis) 78 of radiation generated by the radiation source 72. The 1 st limiting unit 76 limits the irradiation range of the radiation emitted from the radiation source 72. The 2 nd limiting portion 77 further limits the irradiation range of the radiation limited by the 1 st limiting portion 76 within this range. That is, the 1 st limiting section 76 determines the outline of the irradiation range of the radiation. The 2 nd limiting unit 77 further adjusts the size, shape, and the like of the irradiation range within the irradiation range of the radiation defined by the 1 st limiting unit 76.

The 1 st limiter 76 includes a 1 st outer blade 76a, a 2 nd outer blade 76b, a 3 rd outer blade 76c, and a 4 th outer blade 76d that shield radiation. The 1 st outer blade 76a and the 2 nd outer blade 76b are movable in the 3 rd direction (in fig. 6, the positive or negative direction of the arrow Xc) perpendicular to the radiation axis 78. The 3 rd outer leaf 76c and the 4 th outer leaf 76d are movable in a 4 th direction (positive or negative direction of arrow Yc in fig. 6) perpendicular to the radiation axis 78 and perpendicular to the 1 st direction. Therefore, the 1 st restricting portion 76 adjusts the position, shape, and size of the opening formed by the outer blades 76a to 76d by adjusting the positions of the outer blades 76a to 76 d. In the present embodiment, the outer blades 76a to 76d can be independently controlled. However, the control can be performed by pairing the 1 st outer blade 76a and the 2 nd outer blade 76b and/or pairing the 3 rd outer blade 76c and the 4 th outer blade 76 d.

Similarly, the 2 nd limiter 77 includes a 1 st inner blade 77a, a 2 nd inner blade 77b, a 3 rd inner blade 77c, and a 4 th inner blade 77d that shield radiation. The 1 st inner blade 77a and the 2 nd inner blade 77b are movable in the 1 st direction (in fig. 6, the positive or negative direction of the arrow Xc) perpendicular to the radiation axis 78. The 3 rd inner leaf 77c and the 4 th inner leaf 77d are movable in the 2 nd direction (positive or negative direction of arrow Yc in fig. 6) perpendicular to the radiation axis 78 and perpendicular to the 1 st direction. Therefore, the 2 nd restricting portion 77 adjusts the position, shape, and size of the opening formed by the inner blades 77a to 77d by adjusting the positions of the inner blades 77a to 77 d. As a result, the irradiation range of the radiation is restricted by the openings formed by the inner blades 77a to 77 d. As a result, the 2 nd control unit 77 can further limit the irradiation range of the radiation limited by the 1 st limiting unit 76 as necessary. In the present embodiment, the inner blades 77a to 77d can be controlled independently, but the opening may be controlled to be opened or closed by pairing the 1 st inner blade 77a and the 2 nd inner blade 77 b. Similarly, the 3 rd inner blade 77c and the 4 th inner blade 77d may be paired to control opening and closing of the opening.

As shown in fig. 7, in the collimator 73, a 1 st frame body 79 accommodating the outer blades 76a to 76d constituting the 1 st regulating part 76 has a nested structure in which a 2 nd frame body 80 accommodating the inner blades 77a to 77d constituting the 2 nd regulating part 77 is disposed. The 2 nd frame 80 is rotatable about the radiation axis 78 in the 1 st frame 79. Therefore, as shown in fig. 8, the radiation irradiation range 82 can be received in the detection effective region 81 of the radiation imaging unit 23. The detection effective region 81 is a range in which the radiation detection section 23 can detect radiation contributing to a radiographic image.

The 1 st operating unit 41 is an operating unit that operates the 2 nd regulating unit 77. The term "operating the 2 nd restricting portion 77" means adjusting the positions of the 1 st inner blade 77a, the 2 nd inner blade 77b, the 3 rd inner blade 77c, and the 4 th inner blade 77d and rotating the entire inner blades 77a to 77d together with the 2 nd frame 80 about the radial axis 78.

The irradiation range display unit 74 is a light emitting element such as a light emitting diode or a lamp, and irradiates the subject 15 with visible light from the vicinity of a point (so-called focal point) where X-rays are generated, via the collimator 73. Thus, the irradiation range display section 74 displays the irradiation range of the radiation adjusted by the collimator 73 on the subject 15 using visible light. The 1 st operation unit 41 is also an operation unit that turns on or off the light emitting element of the irradiation range display unit 74. That is, the 1 st operation unit 41 includes an operation button or the like for turning on or off the display of the irradiation range.

The 1 st operation unit 41 is a control unit for controlling each unit of the radiation generating unit 22. Specifically, the 1 st operation unit 41 is an operation unit of the collimator 73 and the irradiation range display unit 74. Therefore, a doctor or the like who is a user can adjust the irradiation range of radiation by operating the 1 st operation unit 41. The doctor or the like can turn on or off the display of the irradiation range of the radiation by operating the 1 st operation unit 41. The 1 st operation unit 41 is provided in, for example, a collimator 73 (see fig. 1 and the like).

As shown in fig. 9, the radiation imaging unit 23 includes a radiation imaging panel 86, a grid 87, a battery 88, and the like.

The radiographic panel 86 receives the radiation generated by the radiation generating unit 22 and images the subject 15. That is, the radiographic Panel 86 (or the entire radiographic unit 23) is a so-called direct conversion type or indirect conversion type FPD (Flat Panel Detector). In the present embodiment, the radiographic panel 86 included in the radiographic unit 23 can be replaced with another radiographic panel having a different panel size or the like.

The grid 87 is a member for improving the resolution of the radiographic image by removing scattered radiation, and is disposed on the radiation incident side of the radiographic panel 86 (the side on which the radiation generating unit 22 is located). The grid 87 is replaceable. The replacement of the grid 87 can be performed together with the radiographic panel 86 or separately from the radiographic panel 86. The grid 87 may be included in the radiographic panel 86.

The battery 88 is a power supply for supplying electric power to the radiographic panel 86. The battery 88 can be included in the radiographic panel 86. In the present embodiment, the radiographic imaging unit 23 can be used by being detached from the C-arm 25, and therefore the radiographic imaging unit 23 is equipped with the battery 88, but the radiographic imaging device 10 may also use a radiographic panel that is attached to the C-arm 25 and receives power supply from the imaging unit main body 21 to perform radiography. In this case, the radiographic imaging section 23 can omit the vending battery 88.

As shown in fig. 10, the imaging unit main body 21 includes a control unit 91 that collectively controls operations of the respective units of the radiographic imaging device 10, a power supply unit 92 that supplies power to the respective units of the radiographic imaging device 10, and an image processing unit 93 that performs image processing on a radiographic image captured using the radiographic imaging unit 23 as necessary, in addition to the 2 nd operation unit 61. In the present embodiment, the image processing unit 93 is provided in the imaging unit main body 21, but the image processing unit 93 may be provided in the display unit main body 36.

As shown in fig. 11, the control unit 91 includes an operation control unit 101 and a posture detection unit 102.

The operation control section 101 sets the operation of the collimator 73 using the 1 st operation section 41 to be valid or invalid according to the position of the radiation generating section 22. For example, as shown in fig. 12, when the radiation generating unit 22 is in a vertically downward direction (a Z-axis negative direction) with respect to the radiographic unit 23, the operation control unit 101 invalidates the operation of the collimator 73 by using the 1 st operation unit 41. On the other hand, when the radiation generating unit 22 is in the vertical upward direction (positive Z-axis direction) with respect to the radiographic unit 23, the operation control unit 101 is effective to operate the collimator using the 1 st operation unit 41.

The operation control section 101 acquires information on the position of the radiation generating section 22 using the detection result of the posture detecting section 102. The posture detecting section 102 detects the posture of the C-arm 25 as the support section using the output value of the 1 st potentiometer 110 that measures the sliding amount of the C-arm 25 and the output value of the 2 nd potentiometer 120 that measures the rotation amount of the C-arm 25 (slide mechanism 51). The posture detecting unit 102 detects whether or not the radiographic unit 23 is attached to the C-arm 25, using an output signal of the attachment/detachment detecting unit 42 and the like. As a result, when the radiographic imaging unit 23 is attached to the C-arm 25, the posture detecting unit 102 can detect which of the radiation generating unit 22 and the radiographic imaging unit 23 is positioned in the relatively vertical upward direction by the posture of the C-arm 25.

As described above, in the radiographic imaging device 10, the operation control section 101 enables or disables the operation of the collimator 73 using the 1 st operation section 41 attached to the radiation generating section 22, depending on the position of the radiation generating section 22. In the conventional radiographic apparatus (comparative example) that does not perform such control, for example, when radiographic imaging is performed by the radiation generating unit 22 under a bed or the like on which the subject 15 lies, the 1 st operating unit 41 may come into contact with the bed, a person or other object located around the bed. Therefore, in the radiographic apparatus of the comparative example, when the 1 st operation portion 41 for operating the collimator 73 comes into contact with a bed or the like, the irradiation range 82 of the radiation is unintentionally changed, and therefore, there is an inconvenience that readjustment is necessary. In contrast, in the radiographic imaging apparatus 10, when the radiation generating unit 22 is positioned vertically below and there is a possibility that the radiation generating unit 22 including the 1 st operating unit 41 may pass through a bed or the like, the operation control unit 101 disables the operation of the collimator 73 by the 1 st operating unit 41. Therefore, in the radiographic apparatus 10, even if the 1 st operation portion 41 comes into contact with the bed or the like, the setting of the collimator 73 is not unintentionally changed. As a result, the radiation imaging apparatus 10 is more convenient than the radiation imaging apparatus 10 of the comparative example because readjustment of the collimator 73 does not occur. In the operation of the subject 15, radiography may be repeated many times, and the number of times the radiation generating section 22 passes below the bed or the like may also increase, so that the radiographic apparatus 10 is particularly suitable in this case.

As shown in fig. 14, the control unit 91 of the radiographic imaging device 10 may include a drive control unit 121 instead of or in addition to the operation control unit 101 and/or the posture detection unit 102.

For example, the control unit 91 is provided with a drive control unit 121 in addition to the operation control unit 101. The drive control section 121 automatically drives the 1 st restriction section 76 of the collimator 73. Specifically, when the operation control unit 101 makes the operation using the 1 st operation unit 41 effective, the drive control unit 121 alleviates the limitation of the irradiation range of the radiation by the 1 st limiting unit 76, as compared with when the operation control unit 101 makes the operation using the 1 st operation unit 41 ineffective. When the control of the 2 nd limiter 77 by the 1 st manipulator 41 is effective, the drive controller 121 is configured to, for example, open the 1 st limiter 76 to the maximum extent and substantially limit the irradiation range of the radiation only by the 2 nd limiter 77. This is because, in the still image capturing mode (particularly, when the radiographic imaging unit 23 is detached from the C-arm 25), the irradiation range of radiation does not need to be adjusted by the 1 st limiting unit 76, and therefore, the effort of adjusting the opening of the 1 st limiting unit 76 to the maximum is omitted, and convenience is improved. In addition, when the size of the detection effective region 81 of the radiation imaging unit 23 is detected by the detachable detection unit 42, or when the size of the detection effective region 81 of the radiation imaging unit 23 can be detected by another method, the drive control unit 121 automatically drives the 1 st limiting unit 76 in accordance with the size of the detection effective region 81 of the radiation imaging unit 23. That is, the drive control section 121 automatically adjusts the irradiation range of the radiation to the size (including the shape) of the detection effective region 81 by driving the 1 st limiting section 76.

As shown in fig. 15, the control unit 91 may further include a rotation control unit 126 instead of the operation control unit 101 or the like, or in addition to the operation control unit 101 or the like.

The rotation control section 126 enables or disables rotation of the radiation generating section 22 with respect to the C-arm 25 as a support section. Specifically, as shown in fig. 16, the radiation generating section 22 is rotatably attached to the C-arm 25, and then is locked in rotation by the lock mechanism 131. The lock mechanism 131 is, for example, an electromagnetic lock including a solenoid 132 and an iron core 133 that enters and exits the solenoid 132 by energizing the solenoid 132 (or by cutting off the energization of the solenoid 132).

For example, when the radiographic unit 23 is removed from the C-arm 25, the rotation control unit 126 controls the lock mechanism 131 to unlock (enable) the rotation of the radiation generating unit 22. Conversely, when the radiographic unit 23 is attached to the C-arm 25, the rotation control unit 126 controls the lock mechanism 131 to lock (disable) the rotation of the radiation generating unit 22. In this way, when the rotation of the radiation generating unit 22 is automatically enabled or disabled in conjunction with the attachment or detachment of the radiation imaging unit 23, there is no need to manually lock or unlock the radiation generating unit 22, and thus convenience is improved.

As shown in fig. 17, the control unit 91 may further include a display control unit 140 instead of the operation control unit 101 or in addition to the operation control unit 101. The display control unit 140 enables or disables the display of the irradiation range of the radiation by the irradiation range display unit 74 according to the position of the radiation generating unit 22. For example, when the radiation generating section 22 is positioned in the relatively vertically downward direction with respect to the radiographic section 23, the display control section 140 invalidates the operation of the 1 st operation section 41 (the operation of opening the display of the irradiation range) with respect to the irradiation range display section 74. On the other hand, when the radiation generating section 22 is positioned in the relatively vertical upward direction with respect to the radiographic section 23, the display control section 140 is effective to operate the 1 st operation section 41 related to the irradiation range display section 74. This is because the possibility that the light emitted from the irradiation range display unit 74 is directly incident on the eyes of a doctor or the like is reduced, and the display of the irradiation range is effective as necessary when the display of the irradiation range is safely performed.

In the above-described embodiment, modification example, and the like, the operation control unit 101 enables or disables the operation by the 1 st operation unit 41 depending on the position of the radiation generating unit 22 (particularly, the relative position in the vertical direction to the radiographic unit 23), but the present invention is not limited thereto. For example, in the case of having a still image capturing mode in which the radiation generating section 22 is disposed at the 1 st position to capture a still image of the subject 15 and a moving image capturing mode in which the radiation generating section 22 is disposed at the 2 nd position different from the 1 st position to capture a moving image of the subject 15, as shown in fig. 18, the operation control section 101 validates the operation of the collimator performed by the 1 st operation section 41 in the case of the still image capturing mode and invalidates the operation of the collimator performed by the 1 st operation section 41 in the case of the moving image capturing mode. That is, in the present modification, when the imaging mode is associated with the position of the radiation generating unit 22, the operation control unit 101 can substantially validate or invalidate the operation of the collimator by using the 1 st operating unit 41 according to the position of the radiation generating unit 22 by switching between validation and invalidation of the 1 st operating unit 41 according to which imaging mode is the still image imaging mode or the moving image imaging mode. The configuration is the same as that of embodiment 1 in the case where the 1 st position is a relatively vertically downward direction of the radiation imaging section 23 and the 2 nd position is a relatively vertically upward direction of the radiation generating section 22.

In the above-described modification, when the imaging mode is associated with the position of the radiation generating unit 22, the 1 st operating unit 41 is switched between enabled and disabled according to whether the imaging mode is the imaging mode, and even when the imaging mode is not associated with the position of the radiation generating unit 22, the radiographic imaging device 10 can be configured to switch between enabling and disabling the 1 st operating unit 41 according to the imaging mode. In this case, the operation control unit 101, for example, sets the operation of the collimator using the 1 st operation unit 41 to be effective in the still image capturing mode and sets the operation of the collimator 73 using the 1 st operation unit 41 to be ineffective in the moving image capturing mode, regardless of the position of the radiation generating unit 22 or the like. In this way, regardless of the position or the like of the radiation generating unit 22, when the operation of the collimator 73 using the 1 st operation unit 41 is enabled or disabled only according to the type of the imaging mode, the operation of the collimator 73 using the 1 st operation unit 41 is automatically enabled only when necessary, so that accidental operation is prevented and convenience is improved.

For example, as shown in fig. 19, the operation control unit 101 can disable the operation by the 1 st operation unit 41 when the radiographic unit 23 is attached to the C-arm 25 as the support portion, and enable the operation by the 1 st operation unit 41 when the radiographic unit 23 is not attached to the C-arm 25 as the support portion. In contrast, the operation control unit 101 can set the operation by the 1 st operation unit 41 to be valid when the radiation imaging unit 23 is attached to the C-arm 25 as the support portion, and set the operation by the 1 st operation unit 41 to be invalid when the radiation imaging unit 23 is not attached to the C-arm 25 as the support portion. Safety and/or convenience can be improved by associating the attachment/detachment of the radiographic unit 23 with the validity or invalidity of the 1 st operation unit 41.

Each element of the above embodiments and modifications may be used in any combination of a part or all of them.

The above embodiment, for example, includes: a radiation generating unit having a radiation source for generating radiation, a collimator for adjusting an irradiation range of the radiation, and a 1 st operating unit for operating the collimator; a radiation imaging section that images an object using radiation; and a support portion for supporting at least the radiation generating portion when the subject is imaged, wherein the operating method of the radiographic apparatus includes a step of enabling or disabling the operation of the collimator by the operation control portion 1 according to the position of the radiation generating portion.

In the above-described embodiment, for example, the hardware configuration of the control unit 91 and the processing unit (processing unit) that executes various processes of each unit and the like constituting the control unit 91 is a variety of processors (processors) as shown below. The various processors include a Programmable Logic Device (PLD) such as a CPU (Central Processing Unit), a GPU (graphics Processing Unit), an FPGA (Field Programmable Gate Array) or the like, which is a general-purpose processor that executes software (program) to function as various Processing units, and a dedicated circuit or the like, which is a processor capable of changing a circuit configuration after manufacture, and a processor having a circuit configuration specifically designed to execute various types of Processing.

The 1 processing unit may be constituted by 1 of these various processors, or may be constituted by a combination of 2 or more processors of the same kind or different kinds (for example, a plurality of FPGAs, a combination of a CPU and an FPGA, a combination of a CPU and a GPU, or the like). Further, a plurality of processing units may be constituted by 1 processor. As an example of configuring the plurality of processing units with 1 processor, there is a method in which 1 processor is configured by a combination of 1 or more CPUs and software, as typified by a computer such as a client or a server, and the processor functions as a plurality of processing units. Next, there is a System in which a processor is used, as typified by a System On Chip (SoC) or the like, which implements the functions of the entire System including a plurality of processing units by 1 IC (Integrated Circuit) Chip. In this manner, the various processing units are configured using 1 or more of the various processors described above as a hardware configuration.

More specifically, the hardware configuration of these various processors is a circuit (circuit) in which circuit elements such as semiconductor elements are combined.

Description of the symbols

10-a radiographic apparatus, 11-a photographic unit, 12-a display unit, 15-a subject, 21-a photographic unit body, 22-a radiation generating section, 23-a radiographic section, 25-a C-arm, 27-casters, 31-a cable, 36-a display unit body, 37-a display, 41-a 1 st operating section, 42-a loading and unloading detecting section, 51-a sliding mechanism, 52-a lifting mechanism, 61-a 2 nd operating section, 71-a driving circuit, 72-a radiation source, 73-a collimator, 74-an irradiation range displaying section, 75-a single groove, 76-a 1 st limiting section, 76 a-a 1 st outer blade, 76 b-a 2 nd outer blade, 76C-a 3 rd outer blade, 76 d-a 4 th outer blade, 77-2 nd limiter, 77 a-1 st inner blade, 77 b-2 nd inner blade, 77 c-3 rd inner blade, 77 d-4 th inner blade, 78-radiation axis, 79-1 st frame, 80-2 nd frame, 81-detection effective region, 82-irradiation range, 86-radiography panel, 87-grid, 88-battery, 91-control section, 92-power supply unit, 93-image processing section, 101-operation control section, 102-posture detection section, 110-1 st potentiometer, 120-2 nd potentiometer, 121-drive control section, 126-rotation control section, 131-lock mechanism, 131-display control section, 132-solenoid, 133-iron core, Xc-arrow, Yc-arrow.