JP5034954B2 - X-ray equipment - Google Patents

Description

The present invention is an X-ray imaging in which X-ray imaging is performed from multiple directions by rotating an X-ray tube and an X-ray detector facing each other and rotating the body in the body axis direction and around the body axis. Relates to the device.

As a conventional X-ray imaging apparatus of this type, for example, a C-shaped arm that supports and supports an X-ray tube and an X-ray image intensifier, and a position of the C-shaped arm around a subject lying on a bed, A position detection unit that detects actual rotation information of the rotation direction (the body axis direction and around the body axis of the subject) and the rotation angle, and the purpose of the target rotation direction and rotation angle of the C-arm. An input unit for inputting rotation information, and a rotation control unit for controlling the rotation of the C-arm so that the inputted target rotation information and the actual rotation information from the position detection unit coincide with each other. X-ray imaging apparatus.

The input unit for inputting the target rotation information includes a rotation direction key for instructing the rotation direction, an angle setting key for setting the rotation angle, and a plurality of target rotations set by these keys. A plurality of memory switches for storing information and a storage execution key for storing the target rotation information in the memory switch are provided. The plurality of memory switches are configured such that one of the plurality of memory switches is selected by sequentially switching the numerical values in an up-down manner or by directly specifying the numerical values using numeric keys.

In the X-ray imaging apparatus configured as described above, as shown in FIG. 6, the multidirectional rotation directions of the C-arm are represented as follows. When the C-arm is rotated about the body axis of the subject (around the body axis), the rotation direction to the left side when viewed from the head side of the subject is “LAO” (left forward tilt) ) And the rotation direction to the right is represented as “RAO” (right forward tilt). Further, in a state of being rotated along the body axis of the subject (body axis direction), the direction of rotation of the subject toward the head side is represented as “CRAN” (CRANIAL), and conversely the foot side The direction of rotation is expressed as “CAUD” (CAUDAL).

In this X-ray imaging apparatus, first, target rotation information is stored in advance as follows before imaging. First, the rotation direction (LAO, RAO, CRAN, CAUD) is designated by the rotation direction key, and the rotation angle is designated by the angle setting key. Then, by designating the number of the memory switch and pressing the storage execution key, the target rotation information including the rotation direction and the rotation angle is stored in the memory switch of the specified number. Subsequently, the same operation is performed by sequentially changing the numbers of the memory switches, and a plurality of pieces of target rotation information are set in the memory switches.

At the time of shooting, the photographer designates the number of the memory switch that stores the desired target rotation information. Then, the target rotation information stored in the memory switch with this number is output to the rotation control unit. The rotation control unit to which the target rotation information is input controls the rotation of the C-arm so that the actual rotation information from the position detection unit matches the target rotation information. When the actual rotation information matches the target rotation information, X-rays are emitted from the X-ray tube and an X-ray image is obtained from the X-ray image intensifier. Next, a desired number of memory switches are sequentially designated, and photographing from multiple directions is sequentially performed.

By the way, in cardiovascular angiography examination using an X-ray imaging apparatus, a contrast medium is injected into a subject, and imaging from nine directions shown below is generally performed frequently.

That is, the rotation direction is the body axis direction, and the rotation angle is 30 ° on the head side (CRAN), the vertical direction (0 °), and 30 ° on the foot side (CAUD). The direction of movement is around the body axis, left side (LAO)
Photography in a direction represented by a total of nine pieces of rotation information, with a rotation angle of 30 ° in the vertical direction (0 °) and a rotation angle of 30 ° in the right side (RAO), is particularly frequently performed.

FIG. 7 shows a simplification of such a conventional X-ray imaging apparatus (Patent Document 1). The C-arm 1 that supports the X-ray tube 2 and the X-ray detector 3 facing each other rotates around the subject M by the driving motor M3, and the driving motor M1 and the driving motor M2 move the subject M. It is configured to rotate in the body axis direction and around the body axis.

The operation panel 20 is provided with a plurality of switches and is used for instructing each rotation direction and rotation angle of the C-arm 1. The operation panel 20 also has a function of inputting target rotation information including a desired rotation direction and rotation angle. The CPU 21 inputs target rotation information from the operation panel 20, and controls the rotation direction and rotation angle (actual rotation information corresponding to the rotation direction and rotation angle) of the drive motor M1 and the drive motor M2, Control is performed so that the actual rotation information matches the target rotation information. MD1 and MD2 are motor drive circuits that rotationally drive the drive motors M1 and M2 according to a command signal from the CPU 21, and MD3 is a motor that rotationally drives the drive motor M3 according to an operation signal from the operation panel 20. It is a drive circuit. The CPU 21 obtains actual rotation information from the rotary encoders R1 to R3, and performs movement control of the motor drive circuit so that the C-arm 1 matches the target rotation information.

The display panel 22 displays the rotation direction (CRAN, CAUD, LAO, RAO) and rotation angle of the drive motor M1 and the drive motor M2, which are actual rotation information, and a target rotation stored in a memory switch to be described later. This is for displaying information and displaying information to the photographer. While the CPU 21 performs control so that the actual rotation information matches the target rotation information, the display control unit 23 blinks and displays the rotation direction and rotation angle, or when both the information match. This is for controlling the display panel 22 such that the blinking of the turning direction and the turning angle is stopped and the light is turned on.

The additional operation panel 30 has a function for storing and retrieving the target rotation information when the photographer inputs the target rotation information through the operation panel 20. The additional operation panel 30 stores the target rotation information input via the nine memory switches 30a to 30i and the operation panel 20 in the target rotation information memory or when the memory switches 30a to 30i are pressed. A SET switch 30j for instructing the CPU 21 to start the rotation control is provided so that the corresponding target rotation information and the actual rotation information correspond to each other.

Each of the memory switches 30a to 30i is disposed at a position on the additional operation panel 30 that is associated with a rotation direction and a rotation angle in the plan view of the subject M. That is, the memory switch 30a is disposed at a position indicating the CRAN and LAO directions, the memory switch 30b is disposed at a position indicating only the CRAN direction, and the memory switch 30c is disposed at a position indicating the CRAN and RAO directions. Has been. Further, the memory switch 30d is disposed at a position indicating only the LAO direction, and the memory switch 30e is disposed at a position indicating that the rotation angle is 0 ° with respect to any rotation direction. 30f is arranged at a position indicating only the RAO direction. Similarly, the memory switches 30g, 30h, and 30i are arranged at positions indicating the CAUD and LAO directions, the CAUD direction, and the CAUD and RAO directions, respectively.

The target rotation information memory 40 stores target rotation information corresponding to the memory switches 30a to 30i of the additional operation panel 30. When the target rotation information is input from the operation panel 20 and one of the memory switches 30a to 30i is pressed, and the setting storage switch (not shown) on the operation panel 20 is pressed, the memory is stored via the CPU 21. This is done by storing the target rotation information at the corresponding address. FIG. 8 shows a state in which the target rotation information is stored in the target rotation information memory 40 corresponding to each memory switch.

JP 08-150137 A

In such a conventional X-ray imaging apparatus, the operation state of the apparatus is shown on the display panel 22. That is, in the manual operation without using the memory switch, the rotation angle in the LAO direction and the RAO direction is displayed on the display unit 22e and the rotation angle in the CRAN direction and the CAUD direction is displayed on the display unit 22f. .

When the memory switches 30a to 30g are used for operation, the indicator lights 22a to 22d indicating the LAO direction, the RAO direction, the CRAN direction, and the CAUD direction corresponding to the stored rotation information by pressing the memory switch. Is turned on, and the rotation angle corresponding to the stored rotation information is displayed on the display units 22e and 22f.
For example, if the memory switch 30a is pressed, the indicator lights 22a and 22c indicating the LAO direction and the CRAN direction are turned on based on the target rotation information stored in the target rotation information memory 40 shown in FIG. Each of the portions 22e and 22f displays 30 °.

Then, by pressing the SET switch 30j, based on the rotation information stored in the selected memory switch, the CPU 21 continues the control operation until the C-arm 1 reaches the destination based on the target rotation information. In this case, however, the display units 22e and 22f are switched to the actual rotation angle display based on the actual angle information obtained via the rotary encoders R1 and R2.

Here, in the status display on the display panel 22, the angle information is merely displayed. Therefore, which position the C-arm 1 has reached after any of the nine memory switches 30 a to 30 i is operated. There is a problem that it is difficult to understand intuitively. In particular, the function of controlling the actual rotation information using such a memory switch so as to match the target rotation information is often used as a routine work in clinical examinations, so that improvement in operability is expected.

In addition, because the memory switches 30a to 30g are sequentially operated to complete a series of routines, the operator may not be able to grasp which memory switch has been selected immediately before the inspection. Next, it may be difficult to determine which memory switch to press.

Therefore, the present invention provides an X-ray imaging apparatus capable of intuitively grasping to which position the C-arm 1 is moving and in which position in a series of inspections using the memory switch. The purpose is to do. It is another object of the present invention to provide an X-ray imaging apparatus capable of easily grasping only which memory switch has been selected immediately before in the process of sequentially operating the memory switches 30a to 30g.

The X-ray imaging apparatus of the present invention is an X-ray imaging apparatus that performs X-ray imaging from multiple directions of a subject, and supports an X-ray tube and an X-ray detector facing each other, and lies on a bed. The support means that can rotate in the body axis direction and around the body axis (hereinafter referred to as the rotation direction), and the actual rotation of the rotation direction and the rotation angle with respect to the position of the support means around the subject Position detecting means for detecting information, a plurality of memory switches respectively arranged in association with the rotation direction, and a target rotation direction and rotation of the support means corresponding to the memory switch, respectively. The target rotation information storage means for storing the target rotation information with respect to the angle, the indicator lamps arranged corresponding to the memory switch, and the memory switch when the memory switch is operated The target rotation information is the target rotation information. A rotation control means for controlling the rotation of the support means so that the actual rotation information from the information storage means matches the read target rotation information, and the actual rotation information and the purpose. And display control means for driving to change the state of the indicator lamp corresponding to the operated memory switch to blink or turn on when the rotation information matches.

The display control means changes the lighting state of the indicator lamp when the actual rotation information from the position detection means coincides with the target rotation information.

Further, the display control means performs drive control so as to blink or light the indicator lamp corresponding to the operated memory switch while the rotation control is being performed, and the actual rotation information from the position detection means. When the target rotation information coincides, the indicator lamp is controlled to be turned on or blinked.

The X-ray imaging apparatus of the present invention enables the display control means to select whether to drive the indicator lamp when the actual rotation information from the position detection means matches the target rotation information. Further, drive selection means is provided.

The X-ray imaging apparatus of the present invention further stores an input means for inputting the target rotation information and the inputted target rotation information in the target rotation information storage means in association with the memory switch. And operating means for performing the operation.

The display control means drives an indicator lamp corresponding to a memory switch related to the target rotation information input from the input means.

The display control means changes the driving state when a memory switch corresponding to the driven indicator lamp is operated.

Only when a memory switch corresponding to the driven indicator lamp is operated, a read control means for allowing storage in the target rotation information storage means is provided.

In addition, the present invention is an operation method of an X-ray imaging apparatus for performing X-ray imaging from multiple directions of a subject, and supports an X-ray tube and an X-ray detector facing each other and lies on a bed. A step of operating one of a plurality of memory switches respectively associated with the rotation direction of the support means that can rotate in the body axis direction of the subject and around the body axis (hereinafter referred to as the rotation direction). And the target rotation information corresponding to the operated memory switch from the target rotation information storage means which stores the actual rotation information of the rotation direction and rotation angle of the support means in advance corresponding to the memory switch. And controlling the rotation of the support means so that the actual rotation information from the position detection means for detecting the actual rotation information of the support means matches the read target rotation information; Each of the memory switches For the corresponding indicator lamp is disposed, wherein when the actual rotation information and the object rotation information matches, to flashing or lit by changing the state of the display lamp corresponding to the memory switch is operated driving And the step of performing.

In the X-ray imaging apparatus of the present invention, an indicator lamp is provided corresponding to each of a plurality of memory switches provided in association with the rotation direction and rotation angle, and stored in the memory switch by the display control means. Based on the rotation information, when the actual rotation information coincides with the target rotation information (destination arrival), the state of the indicator lamp corresponding to the memory switch is changed to drive blinking or lighting. because thus constructed, Kaya the operation state of the C-type arm is made based on which memory switches, it is possible to easily grasp the memory switch to be next operated.

Since the X-ray imaging apparatus of the present invention is configured to change the lighting state of the indicator lamp when the actual rotation information and the target rotation information from the position detection unit coincide with the display control unit, It is possible to intuitively grasp the operation state and the destination arrival state of the C-arm.

Further, while the rotation control is being performed, drive control is performed so that the indicator lamp corresponding to the operated memory switch blinks or lights up, and the actual rotation information and the target rotation information from the position detection means are obtained. When they match, control is performed so that the indicator lamp is turned on or blinking. Therefore, it is possible to more intuitively understand that the C-arm is in an operating state and has reached the destination.

The X-ray imaging apparatus of the present invention includes an input means for inputting target rotation information of a target rotation direction and rotation angle of the support means, and the input target rotation information as the rotation direction. And an operation means for storing in the storage area of the target rotation information storage means corresponding to each of the memory switches related to the rotation angle, so that the target rotation information is stored in the target rotation information storage means Can be done easily.

Since the X-ray imaging apparatus of the present invention is configured to drive the indicator lamp corresponding to the memory switch related to the target rotation information input from the input unit by the display control unit, the rotation information should be stored. It is possible to reliably grasp the memory switch.

In the X-ray imaging apparatus of the present invention, when the memory switch corresponding to the driven indicator lamp is operated by the display control means, the memory state is changed even after the memory switch is selected in order to change the driving state. Prior to the operation, it is possible to grasp which memory switch is to store the rotation information.

Since the X-ray imaging apparatus of the present invention enables storage in the target rotation information storage means only when a memory switch that is driven for display is selected, the target rotation information is stored in the storage area of the wrong memory switch. Can be reliably prevented from being stored.

It is a perspective view which shows schematic structure of the X-ray imaging apparatus which concerns on an Example. It is a partially broken top view which shows the rotation mechanism of a C-arm. It is a schematic block diagram which shows the control system of an X-ray imaging apparatus. It is a flowchart which shows the objective rotation information setting process. It is a flowchart which shows a X-ray imaging process. It is the schematic diagram which showed the relationship with a rotation direction and a rotation angle. It is a schematic block diagram which shows the control system of the X-ray imaging apparatus of the conventional apparatus. It is a schematic diagram which shows the content of the objective rotation information memory.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... C-arm 2 ... X-ray tube 3 ... X-ray image intensifier 20
Operation panel 22 Display panel 30 Additional operation panels 30a to 30i Memory switch 30j SET switch M Test objects M1 to M3 Motors R1 to R3
… Rotary encoder

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a schematic configuration of an X-ray imaging apparatus according to this embodiment.

In the figure, the C-arm 1 that can move around the subject M is arranged in the space around the subject M in a state of being suspended from the ceiling wall so as to sandwich the subject M. An X-ray tube 2 and an X-ray detector 3 are oppositely supported at both ends of the C-arm 1. The C-arm 1 can be rotated in the body axis direction of the subject M and in the direction (rotation direction) around the body axis, and further, the C-arm 1 can be rotated in the space around the subject M. It is configured.

Next, the rotation mechanism will be described with reference to a partially broken plan view of the C-arm 1 shown in FIG. First, rotation of the C-arm 1 (support means) in the body axis direction of the subject M (the head side of the subject M: CRAN, the foot side of the subject M: rotation in the CAUD direction) This is realized by a drive mechanism in the arm holder 4 holding the arm 1. In the arm holder 4, a part of a belt (or chain) 5 that fixes both ends to the C-arm 1 is housed, and this belt 5 is stretched around a driving roller 6. A rotary encoder R1 corresponding to position detecting means for detecting the rotation direction and the rotation amount of the drive motor M1 for rotating the drive roller 6 is provided in the arm holder 4 (however, in the drawing, the arm holder 4 Shown outside). The C-arm 1 is rotated in the body axis direction of the subject M through the belt 5 by the rotating action of the drive motor M1. Reference numeral 7 denotes a guide roller for guiding the driving roller 6 that drives the belt 5.

Rotation of the C-arm 1 around the body axis of the subject M (rotation direction LAO to the left when viewed from the head side of the subject M, rotation direction RAO to the right that is the opposite direction) causes the arm holder 4 to move. This is realized by rotating around the body axis of the subject M. The base of the arm holder 4 (the opposite end holding the C-arm 1) is rotatably supported by the side surface of the telescopic arm 8, and a gear 9 is fixed near the support surface. Has been. The gear 9 is meshed with the pinion gear 10, and the pinion gear 10 is attached to the output shaft of the drive motor M <b> 2 provided in the telescopic arm 8. The C-arm 1 together with the arm holder 4 rotates around the body axis of the subject M by the rotating action of the drive motor M2. The rotary encoder R2 corresponds to a position detection unit that detects the rotation direction and the rotation amount of the drive motor M2.

The telescopic arm 8 described above extends and contracts vertically along the direction orthogonal to the body axis of the subject M, and is held at the lower end of the L-shaped rotating arm 11. The other end of the rotating arm 11 is fixed to a rotating body 12, and the rotating body 12 is based on a rotating base 13 fixed to the ceiling wall of the examination room where the X-ray imaging apparatus is installed. Rotate. The rotary motor R3 rotates the rotary body 12, and the rotary encoder R3 detects the position of the C-arm 1 in the surrounding space of the subject M by detecting the rotation direction and the rotation amount of the rotary body 12. To do.

A control system for controlling each rotation is configured as shown in FIG. Here, the same components as those in the control system shown in FIG.

In the present invention, in each of the memory switches 30a to 30i of the additional operation panel 30 for storing the rotation information in the target rotation information memory 40, the indicator lamps 31a to 31i are provided integrally with the switch. In the SET switch 30j for instructing the operation of the C-arm 1 based on the rotation information selected by the memory switches 30a to 30i, the indicator lamp 31j is also provided as an integral type with the memory switch.

These indicator lamps 31 a to 31 j are controlled to be turned on by the CPU 21 via the display control unit 24. In the present embodiment, the indicator lamps 31a to 31j are integrated with the memory switches 31a to 31j, but it goes without saying that they may be provided separately by LEDs or the like in the vicinity of the memory switch.

Next, referring to the flowchart shown in FIG. 4, a procedure for storing the target rotation information in the storage area of the target rotation information memory 40 corresponding to each memory switch, which is a process performed in advance before photographing. Will be described. In addition, as target rotation information, what is frequently used in the cardiovascular angiography mentioned in the conventional example will be described as an example.

First, a target rotation information setting process mode is set by operating a switch (not shown) on the operation panel 20. Then, target rotation information (rotation direction and rotation angle) is set via the operation panel 20. For example, as shown in FIG. 8 described in the conventional example, the target rotation information is set to be 30 ° in the CRAN direction and 30 ° in the LAO direction (step S1). The operation panel 20 corresponds to input means in the present invention.

Next, the CPU 21 causes the display lamp 31a corresponding to the memory switch 30a corresponding to the set target rotation information to blink via the display control unit 24 (step S2). Note that the memory switch related to the selected target rotation information can be easily specified from the set rotation angle, so a correspondence table between the rotation angle and the memory switch is created in advance. If this is the case, this can be used easily.

In this state, the flashing memory switch corresponding to the target rotation information set in step S1 is pressed. Here, the memory switch 30a disposed at the position indicating the CRAN and LAO directions on the additional operation panel 30 is pressed, but only when the flashing memory switch 30a is pressed, the process goes to step S4. Proceed (step S3). For this reason, the operator can reliably select the corresponding memory switch.

When the flashing memory switch is pressed, the CPU 21 changes the indicator lamp corresponding to the memory switch to the lighting state (step S4). This makes it possible to determine at a glance that the memory switch to be stored is selected.

Then, by depressing a setting storage switch (not shown) on the operation panel 20, the CPU 21 stores the set target rotation information (CRAN30 °, LAO30 °) in the target rotation information memory 40 (step S5). ). Here, the CPU 21 and the setting storage switch correspond to the operating means of the present invention. Even if the setting storage switch is pressed, the storage operation is not performed unless the memory switch is lit in step S4 (unless the correct memory switch is selected). The CPU 21 corresponds to the read control means of the present invention.

Finally, it is determined whether or not the setting is finished, and the process is branched (step S6). Here, since there are eight pieces of target rotation information that need to be set, the process returns to step S1 to continue the processing.

As described above, the target rotation information is stored in the target rotation information memory 40 corresponding to each of the memory switches 30b to 30i by repeating Steps S1 to S6.

In the embodiment described above, the CPU 21 and the display control unit 24 correspond to the display control means of the present invention.

In the above-described embodiment, the lighting state of the indicator lamp is changed from the blinking state to the lighting state, but may be changed from the lighting state to the blinking state. In addition to pressing a setting storage switch (not shown), for example, target rotation information (CRAN30 °, CRAN30 °, set by pressing the memory switch 30a pressed in step S1 for a certain period of time (for example, 3 seconds or more) is used. LAO30 °) is stored in the target rotation information memory 40 (step S3).

Next, the X-ray imaging process will be described with reference to FIG. First, the target rotation information setting processing mode is canceled by operating a switch (not shown) on the operation panel 20.

First, the photographer selects and depresses a memory switch arranged at a position indicating target rotation information from among the memory switch groups 30a to 30i arranged on the additional operation panel 30 (step U1).

Since these nine memory switches 30a to 30i are arranged at positions on the additional operation panel 30 related to the rotation direction and rotation angle, switches that easily store desired target rotation information. Can be selected. Specifically, the description will be made on the assumption that the photographer desires photographing in the state shown in (CRAN30 °, LAO30 °) (see FIG. 8). Since the additional operation panel 30 is provided with the memory switches 30a to 30i as shown in FIG. 3, the photographer looks at the additional operation panel 30 and the memory switch 30a has a rotation angle in the CRAN and LAO directions. It is possible to easily and quickly determine that the target rotation information is obtained.

Next, the CPU 21 reads the target rotation information in the target rotation information memory 40 corresponding to the memory switch selected in step U1. Specifically, the target rotation information (CRAN30 °, LAO30 °) is read from the address of the target rotation information memory 40 corresponding to the memory switch 30a (see FIG. 8). Then, the CPU 21 displays the read target rotation information on the display panel 22 through the display control unit 23 and blinks the display lamp 31a corresponding to the memory switch 30a through the display control unit 24. Next, the indicator lamp 31j corresponding to the SET switch 30j is blinked as a switch to be operated (step U2).

Next, by pressing the SET switch 30j of the additional operation panel 30, the CPU 21 starts the rotation control so that the target rotation information read in step U2 matches the actual rotation information ( Step U3). Thus, even if the photographer accidentally presses the memory switch, the C-arm 1 does not start rotating until the SET switch 30j is pressed, thus preventing the C-arm 1 from unintentionally rotating. It is possible to protect the subject M and the photographer. However, it is also possible to perform the rotation control when the corresponding memory switch is pressed.

In the rotation control, the CPU 21 rotates the motor M1 in the CRAN direction so that the rotation angle from the rotary encoder R1 is 30 °, and the motor M2 is LAO-controlled
The rotational angle from the rotary encoder R2 is 30 ° by rotationally driving in the direction.

The operation panel 20 is provided with a switch for performing setting corresponding to the user who wants to turn off the indicator lamp of the memory switch after the C-arm 1 reaches the target position. However, the following operations are different.

That is, the CPU 21 determines whether or not the mode setting for turning off the corresponding indicator lamp after reaching the target position is set (step U4). If the mode setting for turning off is not set, the process proceeds to step U5. The indicator lamp 31a of the memory switch 30a is blinked until the target rotation information and the actual rotation information match, and the indicator lamp 31a corresponding to the memory switch 30a is turned on when they match (step U5). Thus, even after storing the target rotation information corresponding to the operated memory switch, by continuing to turn on the indicator lamp corresponding to the memory switch, the memory switch to be operated next in the routine process is stored. Easy to grasp. In this embodiment, the blinking state is switched to the lighting state, but it goes without saying that the lighting state may be switched to the blinking state.

On the other hand, when the mode is set to be turned off, the indicator light 31a of the corresponding memory switch is blinked until the target rotation information and the actual rotation information match, and when it matches, the memory switch 30a is handled. The indicator lamp 31a is turned off (step U6).

At the same time, the indicator lamp 31j corresponding to the SET switch 30j also stops blinking and turns off when the target rotation information matches the actual rotation information. As a result, the photographer can determine at a glance whether the target rotation information and the actual rotation information match.

Next, the CPU 21 controls a high voltage generator (not shown) to supply a high voltage necessary for X-ray exposure to the X-ray tube 2 to perform X-ray exposure, and the X-ray detector 3 outputs an X-ray image. Is obtained (step U7).

Finally, it is determined whether or not to end the shooting, and the process branches (in step U8). Here, since it is necessary to perform imaging in the remaining eight directions necessary for the cardiovascular angiography examination, the process returns to step U1 and repeatedly executes steps U1 to U8. During this repetition, the photographer can easily select the next required target rotation information from the nine memory switches 30a to 30i of the additional operation panel 30, so that multidirectional shooting can be easily performed. And it can be done quickly.

In this embodiment, the memory switches 30a to 30i are push-type switches, but a touch-type memory switch in which these switches are displayed on a liquid crystal display panel having a touch screen may be used. In addition, a joystick capable of instructing multiple directions is arranged near the center of the additional operation panel 30, and a plurality of memory switches are built in the additional operation panel 30 so as to detect the direction indicated by the joystick. Good.

In this embodiment, a cardiovascular angiography examination is taken as an example, and imaging from nine directions has been described. However, a memory switch and a corresponding indicator lamp are arranged at positions related to the rotation direction and rotation angle. This can be done in any direction as long as it is present.

Furthermore, although an X-ray imaging apparatus having a structure in which a C-arm (supporting means) is suspended from the ceiling is taken as an example of the X-ray imaging apparatus, the C-arm is placed on the floor surface and is rotated around the subject. It can also be implemented with a moving X-ray imaging apparatus, and the support means is not limited to the C-arm.

The X-ray detector 3 can also be implemented as an image intensifier 3 or an X-ray flat panel detector (FPD) in which a two-dimensional thin film transistor (TFT) array and an X-ray conversion film such as a semiconductor or scintillator are combined.

Further, as a modified embodiment, when there are a plurality of users who use this function, a user identification switch (about three) is added so as to correspond to each user, and when the user 1 uses it, the user identification switch is used. When the user 3 uses the switch 1, it is also possible to add as many areas of the target rotation information memory 40 as the number of user identification switches so that the user identification switch 3 is selected.

The present invention can be used in the medical industry that performs diagnosis using X-rays.

Claims (8)

An X-ray imaging apparatus that performs X-ray imaging from multiple directions of a subject, and supports an X-ray tube and an X-ray detector facing each other, and the body axis direction of the subject lying on a bed and around the body axis ( (Hereinafter, referred to as a rotation direction), and a position detection means for detecting actual rotation information of the rotation direction and the rotation angle with respect to the position of the support means around the subject, A plurality of memory switches respectively arranged in association with the rotation direction, and target rotation information of the target rotation direction and rotation angle of the support means are stored in association with the memory switches. Target rotation information storage means, indicator lamps arranged corresponding to the memory switches, and when the memory switch is operated, the target rotation information corresponding to the memory switch is displayed as the target rotation information. Read from information storage means The rotation control means for controlling the rotation of the support means so that the actual rotation information from the position detection means matches the read target rotation information, and the actual rotation information and the target rotation information match. An X-ray imaging apparatus comprising: display control means for driving to change the state of the indicator lamp corresponding to the operated memory switch to blink or turn on. While the rotation control is being performed, the display control means performs drive control so that the indicator lamp corresponding to the operated memory switch blinks or lights up, and the actual rotation information from the position detection means and the target rotation are controlled. in the case where the dynamic information match, X-ray imaging apparatus according to claim 1, wherein the controller controls so as to blink the lights to or lighting the indicator lamp from blinking. The display control means includes drive selection means for selecting whether or not to drive the indicator lamp when the actual rotation information from the position detection means coincides with the target rotation information. The X-ray imaging apparatus according to claim 1 or 2, characterized in that: Input means for inputting the target rotation information, and operation means for storing the input target rotation information in the target rotation information storage means in correspondence with the memory switch, respectively. An X-ray imaging apparatus according to any one of claims 1 to 3 . 5. The X-ray imaging apparatus according to claim 4 , wherein the display control means drives the indicator lamp corresponding to the memory switch related to the target rotation information input from the input means to blink or turn on. 6. The display control unit according to claim 4 or 5, wherein when the memory switch corresponding to the driven indicator lamp is operated, the state of the driving state is changed so as to blink or light. The X-ray imaging apparatus described. If the memory switch corresponding to the driven indicator is operated only in one of claims 5 to 7, further comprising a reading control means for allowing the memory to the target rotational information storing means The X-ray imaging apparatus described. An operation method of an X-ray imaging apparatus for performing X-ray imaging from multiple directions of a subject, in which the X-ray tube and an X-ray detector are supported facing each other, and the body axis direction of the subject lying on the bed And a step of operating any one of a plurality of memory switches respectively arranged in association with the rotation direction of the support means rotatable around the body axis (hereinafter referred to as a rotation direction); Reading the target rotation information corresponding to the operated memory switch from the target rotation information storage means that stores the actual rotation information of the rotation direction and the rotation angle in advance corresponding to the memory switch; The step of controlling the rotation of the support means so that the actual rotation information from the position detection means for detecting the actual rotation information of the support means matches the read target rotation information, and the memory switch respectively. Arranged The display lamp, wherein when the actual rotation information and the object rotation information matches, and driving to flashing or lit by changing the state of the display lamp corresponding to the memory switch is operated, consisting of An operation method of the X-ray imaging apparatus characterized by the above.

Images