JP2018198650A - X-ray diagnostic apparatus and foot switch - Google Patents

Abstract

To provide an X-ray diagnostic apparatus and a foot switch thereof which can receive an instruction for starting X-ray imaging and an instruction for changing a visual field via the foot switch.SOLUTION: An X-ray diagnostic apparatus according to one embodiment of the present invention includes: a foot switch having an operation part for receiving an operation by a user's foot, and a signal output part for outputting a first operation signal according to a first operation by the foot and outputting a second operation signal according to a second operation by the foot; an imaging starting part for controlling an X-ray source and an X-ray detector so as to start X-ray imaging upon receiving the first operation signal; an image generating part for generating an X-ray image based on the X-ray imaging and display the image on a display; and a visual field changing part for changing a visual field of the X-ray image according to the second operation signal.SELECTED DRAWING: Figure 2

Description

  Embodiments described herein relate generally to an X-ray diagnostic apparatus and a foot switch.

  The X-ray diagnostic apparatus is a modality apparatus that enables the X-ray detector to detect the X-ray dose transmitted through the subject with the irradiated X-rays, thereby allowing a less invasive observation of the internal structure of the subject. Since the X-ray dose that passes through the subject differs depending on the tissue of the subject, various tissues can be imaged.

  In addition, it is possible to observe various tissues and organs such as blood flow, gastrointestinal tract and urinary system in real time by imaging using a contrast medium and the like, and it is widely used for disease diagnosis and surgery. For example, in a urological procedure or endoscopic retrograde cholangiopancreatography (ERCP), a user performs a procedure while observing an X-ray image.

  Recently, an X-ray diagnostic apparatus having a foot switch capable of giving an instruction to start X-ray imaging has been developed. By using this type of foot switch, the user can instruct to start X-ray imaging using his / her foot while performing a procedure using his / her hand.

  However, if it is desired to change the field of view, such as changing the field of view of X-ray imaging or changing the center of the field of view, the user can input information related to the change of the field of view using his / her hand through an input device such as a pointing device on the console. An operation must be performed. For this reason, when it is desired to change the field of view when performing a procedure, the user must interrupt the procedure once and perform an input operation, which is very inconvenient.

JP 2005-58347 A

  The problem to be solved by the present invention is to provide an X-ray diagnostic apparatus capable of receiving an X-ray imaging start instruction and a visual field change instruction via a foot switch, and the foot switch.

  In order to solve the above-described problem, an X-ray diagnostic apparatus according to an embodiment of the present invention receives an operation unit that receives an operation by a user's foot and a first operation signal according to the first operation by the foot. And a foot switch having a signal output unit that outputs a second operation signal in response to a second operation by the foot, and X-ray imaging is started when the first operation signal is received. An imaging start unit that controls a radiation source and an X-ray detector, an image generation unit that generates an X-ray image based on the X-ray imaging and displays the X-ray image on the display unit, and the X-ray according to the second operation signal And a visual field changing unit that changes the visual field of imaging.

1 is a schematic configuration diagram showing an example of an X-ray diagnostic apparatus including a foot switch according to an embodiment of the present invention. The figure which shows one structural example of the foot switch which outputs the signal according to stepping-on operation of a tread board. (A) is a figure which shows the 1st structural example of the foot switch which outputs the signal according to the depression amount, (b) is a figure which shows a 2nd structural example, (c) is a figure which shows a 3rd structural example. Explanatory drawing which shows an example of a mode that the visual field size of X-ray imaging is changed. The figure which shows the 1st structural example of the foot switch which outputs the signal according to any of the presence or absence of stepping-in operation. (A) is a figure which shows the 2nd structural example of the foot switch which outputs the signal according to any of the presence or absence of stepping operation, (b) is a figure which shows one structural example of a right dog mechanism. (A) is a figure which shows the 3rd structural example of the foot switch which outputs the signal according to any of the presence or absence of stepping operation, (b) is a figure which shows a 4th structural example, (c) is a 5th structural example. FIG. (A) is explanatory drawing which shows an example of the relationship between the output of a movement signal output mechanism, and the movement instruction | indication of the center position of a visual field, (b) is explanatory drawing which shows another example. Explanatory drawing which shows an example of a mode that the center position of the visual field of X-ray imaging is changed. (A) is a figure which shows the 6th structural example of the foot switch 20 which outputs the signal according to the presence or absence of stepping operation, (b) is a figure which shows a 7th structural example. The figure which shows the example of 1 structure of the foot switch which has two treads. The schematic block diagram which shows the example of an implementation | achievement function by the processor of a processing circuit. The flowchart which shows an example of the procedure at the time of receiving the start instruction | indication of a X-ray imaging, and the change instruction | indication of a visual field via a foot switch by the processor of a processing circuit.

  Embodiments of an X-ray diagnostic apparatus and a foot switch according to the present invention will be described with reference to the accompanying drawings. Note that the X-ray diagnostic apparatus according to the following embodiments may be any apparatus that can perform fluoroscopy and imaging, and includes, for example, an X-ray TV apparatus and an X-ray angio apparatus.

(1. Overall configuration)
FIG. 1 is a schematic configuration diagram illustrating an example of an X-ray diagnostic apparatus 10 including a foot switch 20 according to an embodiment of the present invention. In the present embodiment, an example in which an X-ray TV apparatus is used as the X-ray diagnostic apparatus according to the present invention is shown.

  As shown in FIG. 1, the X-ray diagnostic apparatus 10 includes an imaging apparatus having at least an X-ray source 11, an X-ray movable diaphragm 12 and an X-ray detector 13, a foot switch 20, and a console 30. The imaging apparatus further includes an image system length manual mechanism 14, a top-plate left-right movement mechanism, a top plate 15, a bed 16, a chair 17 on which an operator sits, and the like.

  The X-ray source 11 generates X-rays when a voltage is applied by a high voltage generator (not shown). The X-ray movable diaphragm 12 has a mechanism for adjusting the irradiation field of X-rays generated by the X-ray source 11. Specifically, the X-ray movable diaphragm 12 has, for example, two pairs of movable blades, and the X-ray irradiation field is adjusted by opening and closing each pair of movable blades.

  The X-ray detector 13 is constituted by, for example, a flat panel detector (FPD), detects X-rays irradiated on the X-ray detector 13, and based on the detected X-rays, Outputs image data of an X-ray image. This image data is given to the console 30. The X-ray detector 13 may be configured using an image intensifier, a TV camera, or the like.

  The image system length manual mechanism 14 moves the image system (imaging system) including the X-ray source 11, the X-ray movable diaphragm 12 and the X-ray detector 13 as a unit with respect to the table 15 in the longitudinal direction of the table 15. . Further, the image system length manual mechanism 14 may tilt the bed 16 together with the top plate 15 around the axis orthogonal to the paper surface of FIG. The top-plate left-right movement mechanism can move the top plate 15 along the longitudinal direction of the top plate 15 and can move it along the short direction. The video system length manual mechanism 14 includes a motor as a drive source for moving the video system along the longitudinal direction of the top plate 15 and raising and lowering the bed 16, and electronic components for controlling the motor. Have. The top plate left-right movement mechanism includes a motor as a drive source for moving the top plate 15 along the longitudinal direction and the short side direction, and an electronic component for controlling the motor.

  A top plate 15 is provided above the bed 16, and the subject is placed on the top plate 15. Further, a shoulder rest, a footrest, a lateral hand grip, etc. for supporting the subject may be attached to the bed 16.

  For example, the operator sits on the chair 17 and confronts the subject placed on the top board 15. The surgeon operates the foot switch 20 while performing a procedure on the subject while confirming a real-time fluoroscopic image acquired by X-ray imaging, for example.

  The foot switch 20 accepts an operation by the operator's foot, outputs a signal corresponding to the operation, and gives it to the console 30 in a wired or wireless manner. The foot switch 20 receives at least an X-ray imaging start instruction and a visual field change instruction. Details of the configuration of the foot switch 20 according to the present embodiment will be described later with reference to FIG.

  The console 30 is configured by, for example, a general personal computer or workstation, and includes an input circuit 31, a display 32, a storage circuit 33, a network connection circuit 34, and a processing circuit 35. The console 30 may not be provided independently. For example, a part of the configuration 31-35 of the console 30 may be provided in a distributed manner on the bed 16 or the like.

  The input circuit 31 includes a general input device such as a trackball, a switch button, a mouse, a keyboard, and a numeric keypad, and outputs an operation input signal corresponding to a user operation to the processing circuit 35. For example, the user can set the imaging condition via the input circuit 31. Further, the input circuit 31 may include an irradiation switch that controls on / off of the irradiation.

  The display 32 is configured by a general display output device such as a liquid crystal display or an OLED (Organic Light Emitting Diode) display, and displays various information such as an X-ray image generated by the processing circuit 35 based on the X-ray imaging. To do.

  The storage circuit 33 includes a recording medium readable by a processor, such as a magnetic or optical recording medium or a semiconductor memory. The storage circuit 33 stores the output signal of the foot switch 20 in association with the function to be realized according to the output signal. Some or all of the programs and data in these recording media may be downloaded by communication via an electronic network.

  The network connection circuit 34 is constituted by, for example, a network card having a predetermined printed circuit board, and implements various information communication protocols according to the network form. The network connection circuit 34 connects the X-ray diagnostic apparatus 10 and other devices according to these various protocols. For this connection, an electrical connection via an electronic network can be applied. Here, the electronic network means an entire information communication network using telecommunications technology. In addition to a wireless / wired hospital backbone local area network (LAN) and the Internet network, a telephone communication network, an optical fiber communication network, a cable. Includes communication networks and satellite communication networks.

  The processing circuit 35 is a processor that executes processing for receiving an X-ray imaging start instruction and a visual field change instruction via the foot switch 20 by reading and executing a program stored in the storage circuit 33. .

  In the present embodiment, the term “processor” means, for example, a dedicated or general-purpose CPU (Central Processing Unit), GPU (Graphics Processing Unit), or an application specific integrated circuit (ASIC). It shall mean a circuit such as a programmable logic device (for example, a simple programmable logic device (SPLD), a complex programmable logic device (CPLD), and an FPGA). The processor implements various functions by reading and executing a program stored in the storage medium.

  In this embodiment, an example in which a single processor of a processing circuit realizes each function has been described. However, a processing circuit is configured by combining a plurality of independent processors, and each processor realizes each function. Also good. Further, when a plurality of processors are provided, the storage medium for storing the program may be provided for each processor individually, or one storage medium stores the programs corresponding to the functions of all the processors in a lump. Also good.

  In addition, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

(2. Configuration of foot switch)
Next, a configuration example of the foot switch 20 according to an embodiment of the present invention will be described. As described above, the foot switch 20 receives an operation by the operator's foot, outputs a signal corresponding to the operation, and gives the console 30 by wire or wireless. The foot switch 20 receives at least an instruction to start X-ray imaging and an instruction to change the field of view of X-ray imaging. The change of the field of view of X-ray imaging includes the change of the field size of X-ray imaging and the change of the center position of the field of view of X-ray imaging.

  FIG. 2 is a diagram illustrating a configuration example of the foot switch 20 that outputs a signal corresponding to the stepping operation of the tread plate 22. FIG. 2 shows an example in which the foot switch 20 has one tread plate 22.

  The foot switch 20 that outputs a signal corresponding to the stepping operation of the tread board 22 may be configured to receive information on the stepping amount and output a signal corresponding to the stepping amount, or depending on whether the stepping operation is performed or not. It may be configured to output the received signal. When configured to output a signal corresponding to the amount of depression, the foot switch 20 may output a continuous signal according to the amount of depression, or output a step signal for each predetermined width of the amount of depression. May be. Further, when the foot switch 20 is configured to output a signal corresponding to whether or not the stepping operation is performed, for example, the foot switch 20 outputs an on signal when it is depressed an odd number of times and an off signal when it is depressed an even number of times.

  The foot switch 20 shown in FIG. 2 includes, for example, a frame body 21, a tread plate 22, and a depressed state detection element 23.

  The frame body 21 is made of metal, resin, or the like, and supports the tread plate 22 and the depressed state detecting element 23.

  The tread board 22 is formed of metal, resin, or the like, and accepts a stepping operation by a user's foot. The stepping state detection element 23 includes a displacement sensor, a switch, and the like, and outputs a signal corresponding to the stepping operation. When the foot switch 20 is configured to output a continuous or stepped signal according to the depression amount, the depression state detection element 23 detects a depression amount and outputs a signal according to the depression amount. It consists of a displacement sensor. On the other hand, when the foot switch 20 is configured to output a signal corresponding to whether or not the stepping operation is performed, the stepped state detection element 23 can be configured by a switch or the like, for example.

(2.1. Field size change)
(2.1.1. Foot switch that outputs a signal according to the amount of depression)
FIG. 3A is a diagram illustrating a first configuration example of the foot switch 20 that outputs a signal corresponding to the depression amount, FIG. 3B is a diagram illustrating a second configuration example, and FIG. 3C is a third configuration. It is a figure which shows an example.

  When outputting a signal corresponding to the amount of depression, the foot switch 20 has, for example, a tread plate 22 a as one of the tread plates 22, one end of which is rotatably supported by the frame body 21 and the other end separated from the frame body 21. In response to the stepping operation, the distance between the other end of the stepping plate 22a and the frame body 21 is changed with the one end supported by the frame body 21 as an axis, so that the stepping state detection element 23 outputs a signal corresponding to the stepping amount. Output.

  In this case, as shown in FIG. 3A, the stepping state detecting element 23 is configured by a potentiometer 23a that detects a rotation angle of the stepping plate 22a that is rotatably supported at one end by the frame body 21. You may output the signal according to a rotation angle. Further, as shown in FIG. 3B, the depression state detecting element 23 includes a potentiometer 23a, a pulley 23b, and one end fixed to a fixing point 23d on the back surface of the stepping plate 22a and the other end wound around the pulley 23b. The belt 23c may be configured. In this case, the belt 23c rotates the pulley 23b according to the stepping amount of the stepping plate 22a, and the potentiometer 23a outputs a signal according to the rotation amount of the pulley 23b. Further, as shown in FIG. 3C, the depression state detecting element 23 includes a potentiometer 23e with a gear and a gear 23f provided on the back surface of the tread plate 22a, and the gear 23f according to the depression amount of the tread plate 22a. May rotate the potentiometer 23e with a gear, and the potentiometer 23e with a gear may output a signal corresponding to the rotation amount. Further, the configuration example of the foot switch 20 that outputs a signal corresponding to the depression amount is not limited to the example shown in FIGS. 3A to 3C, and is configured using a displacement sensor using light or magnetism, for example. May be.

  The stepping state detection element 23 of the foot switch 20 that outputs a signal corresponding to the stepping amount as shown in FIGS. 3A to 3C is operated when the stepping plate 22a is depressed by a predetermined amount from the initial position. Different signals are output when the operation is performed and when the operation amount is further adjusted from the predetermined amount to adjust the operation amount. When the stepping start operation is performed, the processing circuit 35 controls the X-ray source 11 and the X-ray detector 13 to start X-ray imaging. Further, when the stepping amount is adjusted, the processing circuit 35 changes the visual field size of the X-ray imaging according to the stepping amount.

  FIG. 4 is an explanatory diagram illustrating an example of a change in the visual field size of X-ray imaging.

  For example, the surgeon starts X-ray fluoroscopic imaging by starting to depress a foot switch 20 (for example, see FIG. 3A) that outputs a signal corresponding to the depressing amount, and is displayed on a display such as the display 32. A procedure is performed on the subject while observing the fluoroscopic image. At this time, the user can change the visual field size of X-ray imaging by adjusting the depression amount of the foot switch 20 (see FIG. 4). For example, when the visual field size is increased as the foot switch 20 is depressed, the user may depress the foot switch 20 to confirm an image with a larger visual field size.

(2.1.2. Foot switch that outputs a signal according to the presence or absence of depressing operation)
FIG. 5 is a diagram illustrating a first configuration example of the foot switch 20 that outputs a signal corresponding to whether or not the stepping operation is performed.

  The foot switch 20 that outputs a signal according to whether or not the stepping operation is performed has a size signal output mechanism 24 in order to accept an operation for changing the visual field size of X-ray imaging.

  When the foot switch 20 is configured to output a signal corresponding to whether or not the stepping operation is performed, the foot switch 20 includes a stepping plate 22b that is stepped on in a direction perpendicular to the surface of the plate as the stepping plate 22. At this time, the depression state detecting element 23 can be configured by a switch or the like that repeatedly outputs ON when it is depressed, that is, when it is depressed once, and outputs an OFF signal when it is depressed again. . In this case, when there is a stepping operation, the processing circuit 35 controls the X-ray source 11 and the X-ray detector 13 to start X-ray imaging.

  Further, the size signal output mechanism 24 can be configured by, for example, a right switch 25R and a left switch 25L provided on the inner side surfaces of the right side wall 21R and the left side wall 21L of the frame body 21. The user can press the right switch 25R and the left switch 25L by swiping his / her foot left and right. In this case, for example, the processing circuit 35 reduces the visual field size according to the number of times the right switch 25R is pressed, and increases the visual field size according to the number of times the left switch is pressed.

  FIG. 6A is a diagram illustrating a second configuration example of the foot switch 20 that outputs a signal according to whether or not the stepping operation is performed, and FIG. 6B is a diagram illustrating a configuration example of the right dog mechanism 26R. is there.

  As shown in FIG. 6A, the size signal output mechanism 24 includes a right dog mechanism 26R and a left dog mechanism 26L provided on the inner side surfaces of the right side wall 21R and the left side wall 21L of the frame body 21, respectively. Also good. The right dog mechanism 26R includes, for example, three dogs 26Ra having different lengths and three sensors 26Rb for detecting each of the three dogs 26Ra (see FIG. 6B).

  The dog 26Ra is pushed into the inner side surface of the right side wall 21R according to an operation by the user's foot. The sensor 26Rb outputs a signal corresponding to the operation amount of the dog 26Ra, that is, the amount by which the dog 26Ra is pushed. Note that the left dog mechanism 26L has the same configuration as the right dog mechanism 26R, and thus the description thereof is omitted.

  Even when the size signal output mechanism 24 is configured by the right dog mechanism 26R and the left dog mechanism 26L, the processing circuit 35 is connected to the right as in the case where the size signal output mechanism 24 is configured by the right switch 25R and the left switch 25L. The visual field size of X-ray imaging is changed according to the output signals of the dog mechanism 26R and the left dog mechanism 26L.

  For example, the number of dogs (adjustment resolution) may be different between the right dog mechanism 26R and the left dog mechanism 26L so that the field size reduction accepts a fine adjustment while the field size enlargement accepts a coarse adjustment.

(2.2. Change of visual field center position)
FIG. 7A is a diagram illustrating a third configuration example of the foot switch 20 that outputs a signal according to whether or not the stepping operation is performed, and FIG. 7B is a diagram illustrating a fourth configuration example. ) Is a diagram illustrating a fifth configuration example.

  The foot switch 20 according to the fourth to fifth configuration examples that outputs a signal according to whether or not the stepping operation is performed has a movement signal output mechanism 27 for receiving an instruction to change the center position of the visual field of X-ray imaging. . The movement signal output mechanism 27 is configured by, for example, a switch or a dog mechanism. 7A to 7C show an example in which the movement signal output mechanism 27 is configured by a switch.

  The movement signal output mechanism 27 includes, for example, right switches 25R1 and R2 provided on the inner side surface of the right side wall 21R, and a left switch 25L1 and left switch 25L2 provided on the inner side surface of the left side wall 21L. The right switches 25R1 and R2 may be arranged one above the other (see FIG. 7 (a)), may be arranged side by side in the horizontal direction (see FIG. 7 (b)), or are arranged obliquely. (See FIG. 7C).

  FIG. 8A is an explanatory diagram showing an example of the relationship between the output of the movement signal output mechanism 27 and a movement instruction for the center position of the visual field, and FIG. 8B is an explanatory diagram showing another example. FIG. 9 is an explanatory diagram showing an example of how the center position of the field of view of X-ray imaging is changed.

  As shown in FIG. 8A, the processing circuit 35 determines the center position of the X-ray imaging field of view according to the number of times the right switch 25R1 is pressed (positive direction of the X axis (horizontal axis) in the fluoroscopic image (right). ) And the center position of the X-ray imaging field of view is moved in the negative direction (left) of the X axis (horizontal axis) in the fluoroscopic image in accordance with the number of times the right switch 25R2 is pressed. Further, the number of times the left switch 25L2 is pressed by moving the center position of the X-ray imaging field of view in the positive direction (up) of the Y axis (vertical axis) in the fluoroscopic image according to the number of times the left switch 25L1 is pressed. Accordingly, the center position of the field of view of the X-ray imaging is moved in the negative direction (down) of the Y axis (vertical axis) in the fluoroscopic image (see FIG. 9).

  Further, as shown in FIG. 8B, the processing circuit 35 moves the center position of the X-ray imaging field of view in the positive direction of the X axis according to the number of times the right switch 25R1 is pressed, and the right switch 25R2. Is moved in the positive direction of the Y axis according to the number of times of pressing, and is moved in the negative direction of the X axis according to the number of times of pressing the left switch 25L1, and according to the number of times of pressing the left switch 25L2. It may be moved in the negative direction of the Y axis.

  Further, as shown in FIG. 7C, the foot switch 20 that outputs a signal according to whether or not the stepping operation is performed and has the movement signal output mechanism 27 is further provided as a right switch 25R3 as the size signal output mechanism 24. And a left switch 25L3.

  The processing circuit 35 may use the output signals of the right switch 25R3 and the left switch 25L3 as an X-ray dose adjustment signal. Specifically, the processing circuit 35 may increase the X-ray dose according to the number of times the right switch 25R3 is pressed and decrease the X-ray dose according to the number of times the left switch 25L3 is pressed.

  FIG. 10A is a diagram illustrating a sixth configuration example of the foot switch 20 that outputs a signal corresponding to whether or not the stepping operation is performed, and FIG. 10B is a diagram illustrating a seventh configuration example.

  The tread plate 22b of the foot switch 20 according to the sixth configuration example is configured to be movable along at least the upper and lower and left and right biaxial directions in the in-plane direction of the tread plate 22b (see FIG. 10A). Further, the tread plate 22b may be configured to be freely movable including an oblique direction in the plane of the tread plate 22b. In this case, the movement signal output mechanism 27 outputs a signal indicating the movement amount and the movement direction of the footboard 22b in the in-plane direction of the footboard 22b. Then, the processing circuit 35 changes the center position of the visual field for X-ray imaging in accordance with the movement amount and movement direction of the tread plate 22b in the in-plane direction of the tread plate 22b.

  Further, the foot switch 20 according to the seventh configuration example includes a trackball 28 as a movement signal output mechanism 27 for receiving an instruction to change the center position of the X-ray imaging field of view (see FIG. 10B). In this case, the processing circuit 35 changes the center position of the X-ray imaging field of view in accordance with the operation of the trackball 28.

  In addition, the 1st-7th structural example of the foot switch 20 which outputs the signal according to the presence or absence of stepping-on operation can be combined suitably mutually. For example, a trackball 28 may be provided on the inner surface of the right side wall 21R, for example, with respect to the first configuration example shown in FIG. In addition, the first configuration example illustrated in FIG. 5 and the sixth configuration example illustrated in FIG. 10A may be combined to accept both the visual field size change and the visual field center position change.

  FIG. 11 is a diagram illustrating a configuration example of the foot switch 20 having two treads 22.

  As shown in FIG. 11, the foot switch 20 may have two or more treads 22. At this time, for example, the footboards 22a (see FIG. 3) and 22b (see FIGS. 5-7 and 10) may be mixed. FIG. 11 shows an example in which the foot switch 20 has two tread plates 22a (tread plates 22aR and 22aL).

  In this case, the processing circuit 35 may start X-ray imaging in response to an operation for starting to step on any one of the footboards 22. For this reason, for example, the depression state detection element 23L corresponding to the left tread board 22aL simply outputs a signal corresponding to the depression amount. On the other hand, the depression state detecting element 23R corresponding to the right tread board 22aR adjusts the depression amount when the tread board is depressed by a predetermined amount from the initial position and the depression start operation is performed, and when the depression is further depressed from the predetermined amount. Different signals are output at different times.

  In this example, the processing circuit 35 starts X-ray imaging in response to the depression start operation of the right tread board 22aR. Further, when the stepping amount of the right step board 22aR is adjusted, the processing circuit 35 changes the field size of the X-ray imaging according to the stepping amount. On the other hand, the processing circuit 35 changes the X-ray dose, for example, according to the amount of depression of the left tread plate 22aL.

  Further, the processing circuit 35 starts X-ray imaging in response to the stepping start operation of the right tread plate 22aR, and when the stepping amount of the right stepping plate 22aR is adjusted, the X-ray dose is changed according to the stepping amount. Also good. In this case, when the stepping amount of the left step board 22aL is adjusted, the processing circuit 35 changes the visual field size of X-ray imaging according to the stepping amount.

(3. Examples of processing circuit implementation functions)
FIG. 12 is a schematic block diagram showing an example of functions realized by the processor of the processing circuit 35. As illustrated in FIG. 12, the processor of the processing circuit 35 implements an imaging start function 41, an image generation function 42, a visual field change function 43, a dose change function 44, and an allocation function 45. Each of these functions is stored in the storage circuit 33 in the form of a program.

  The imaging start function 41 controls the X-ray source 11 and the X-ray detector 13 so as to start X-ray imaging according to the operation of the foot switch 20. The image generation function 42 generates an X-ray image based on X-ray imaging and displays it on the display 32.

  The visual field changing function 43 changes the visual field of X-ray imaging in accordance with the operation of the foot switch 20. The change of the field of view of X-ray imaging includes the change of the field size of X-ray imaging and the change of the center position of the field of view of X-ray imaging.

  The dose change function 44 changes the X-ray dose according to the operation of the foot switch 20.

  The allocation function 45 is based on an instruction from the user via the input circuit 31 and is associated with each of a plurality of operation signals output from the foot switch 20 and stored in the storage circuit 33 and stored in the storage circuit 33. Change various functions such as change and dose change. In addition to the above-described X-ray imaging start instruction, field of view change, and dose change, for example, the assigned function includes, for example, a change in the imaging direction, a movement along the longitudinal direction of the top 15 of the imaging system, and a ceiling along the same direction. The movement of the plate 15 or the raising / lowering of the bed 16 may be included.

  FIG. 13 is a flowchart illustrating an example of a procedure when the processor of the processing circuit 35 receives an X-ray imaging start instruction and a visual field change instruction via the foot switch 20. In FIG. 13, a symbol with a number added to S indicates each step of the flowchart.

  In step S1, the imaging start function 41 receives a signal indicating that the stepping start operation of the stepping plate 22a has been performed from the stepping state detection element 23 or that the stepping state detection element 23 has stepped on the stepping plate 22b. When the signal is received, the X-ray source 11 and the X-ray detector 13 are controlled to start X-ray imaging such as fluoroscopy.

  Next, in step S <b> 2, the image generation function 42 generates an X-ray image based on the X-ray imaging and displays it on the display 32.

  Next, in step S <b> 3, the visual field changing function 43 determines whether or not there is an instruction to change the visual field size for X-ray imaging via the foot switch 20. If there is an instruction to change the visual field size, the process proceeds to step S4. On the other hand, if there is no instruction to change the visual field size, the process proceeds to step S5.

  Next, in step S4, the visual field changing function 43 changes the visual field size according to the operation of the foot switch 20 (see FIG. 4). For example, the visual field changing function 43 changes the visual field size according to a signal corresponding to the stepping amount of the stepping plate 22 a received from the stepping state detecting element 23. Further, the visual field changing function 43 may change the visual field size according to the signal received from the size signal output mechanism 24.

  Next, in step S <b> 5, the visual field changing function 43 determines whether or not an instruction to change the center position of the X-ray imaging visual field is given via the foot switch 20. If there is an instruction to change the visual field center position, the process proceeds to step S6. On the other hand, if there is no instruction to change the visual field size, the process proceeds to step S7.

  Next, in step S6, the visual field changing function 43 changes the center position of the visual field according to the operation of the foot switch 20 (see FIG. 9). Specifically, the visual field changing function 43 changes the center position of the visual field according to the signal received from the movement signal output mechanism 27.

  Next, in step S7, the image generation function 42 determines whether or not X-ray imaging such as fluoroscopy should be terminated. When imaging should be continued, the process returns to step S2. On the other hand, when imaging should be terminated, a series of procedures is terminated.

  Through the above procedure, an X-ray imaging start instruction and a visual field change instruction can be received via the foot switch 20.

  The X-ray diagnostic apparatus 10 according to the present embodiment can accept an X-ray imaging start instruction and an X-ray imaging visual field change instruction only by operating the foot switch 20. For this reason, if the user wishes to change the field of view when performing a procedure, the user can use his / her foot while performing fluoroscopic imaging without interrupting the procedure and keeping an eye on the subject. By simply operating the foot switch 20, the visual field size and the central position of the visual field can be changed intuitively and easily. Therefore, according to the X-ray diagnostic apparatus 10, the user's work efficiency can be greatly improved.

  According to at least one embodiment described above, an X-ray imaging start instruction and a visual field change instruction can be received via the foot switch 20.

  The imaging start function 41, the image generation function 42, the visual field change function 43, the dose change function 44, and the allocation function 45 of the processing circuit 35 in the present embodiment are respectively an imaging start unit, an image generation unit, and a visual field in the claims. It is an example of a change part, a dose change part, and an allocation part.

  In addition, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  Further, in the embodiment of the present invention, each step of the flowchart shows an example of processing that is performed in time series in the order described. The process to be executed is also included.

DESCRIPTION OF SYMBOLS 10 ... X-ray diagnostic apparatus 11 ... X-ray source 13 ... X-ray detector 20 ... Foot switch 22 ... Footboard 23 ... Depression state detection element 24 ... Size signal output mechanism 25L ... Left switch 25R ... Right switch 26L ... Left dog mechanism 26R ... right dog mechanism 26Ra ... dog 26Rb ... sensor 27 ... movement signal output mechanism 32 ... display 41 ... imaging start function 42 ... image generation function 43 ... visual field change function 44 ... dose change function

Claims (12)

An operation unit that receives an operation by a user's foot, and a signal that outputs a first operation signal in response to the first operation by the foot and outputs a second operation signal in response to the second operation by the foot An output unit, and a foot switch having
An imaging start unit that controls the X-ray source and the X-ray detector to start X-ray imaging when receiving the first operation signal;
An image generation unit that generates an X-ray image based on the X-ray imaging and displays the image on a display unit;
A visual field changing unit that changes the visual field of the X-ray imaging according to the second operation signal;
An X-ray diagnostic apparatus comprising: The visual field changing unit is
Changing a field size of the X-ray imaging according to the second operation signal;
The X-ray diagnostic apparatus according to claim 1. The operation part of the foot switch is
A tread board for receiving information on the amount of depression by the foot,
The signal output part of the foot switch is
The first operation signal is output when a predetermined start amount is depressed from the initial position and a depressing start operation is performed. Having a stepping output unit that outputs as an operation signal of 2.
The X-ray diagnostic apparatus according to claim 2. The operation part of the foot switch is
A tread board for accepting the presence or absence of a stepping operation by the foot;
At least one of a dog mechanism and a switch having a sensor and a dog for receiving the second operation by the foot;
Have
The signal output part of the foot switch is
A stepping output unit that outputs the first operation signal when there is a stepping operation on the tread plate that accepts the presence or absence of a stepping operation;
A size signal output unit that outputs at least one of a signal according to the number of times the switch is pressed and an output signal of the sensor according to the operation amount of the dog as the second operation signal;
Having
The X-ray diagnostic apparatus according to any one of claims 1 to 3. A dose changing unit that changes an X-ray dose irradiated by the X-ray source in response to a third operation signal corresponding to a third operation by the foot output by the signal output unit;
Further comprising
The operation part of the foot switch is
A first tread board and a second tread board for receiving information on the amount of depression by the foot;
The signal output part of the foot switch is
The first operation signal is output when a predetermined amount of the first step board is depressed from an initial position, and a signal corresponding to the depression amount of the step board is output when the first step plate is further depressed from the predetermined amount. And a stepping output unit that outputs a signal corresponding to the stepping amount of the second stepping plate as the second operation signal,
The imaging start unit
When the first stepping plate is stepped on a predetermined amount from an initial position, the X-ray source and the X-ray detector are controlled to start the X-ray imaging,
The dose change unit includes:
When the first tread is further depressed from the predetermined amount, the X-ray dose is changed according to the amount of depression of the first tread,
The visual field changing unit is
Changing the field-of-view size of the X-ray imaging according to the amount of depression of the second tread board;
The X-ray diagnostic apparatus according to any one of claims 1 to 4. The signal output unit of the foot switch is
Outputting a fourth operation signal corresponding to the fourth operation by the foot;
The visual field changing unit is
Changing the center position of the field of view of the X-ray imaging according to the fourth operation signal;
The X-ray diagnostic apparatus according to any one of claims 2 to 5. The visual field changing unit is
Changing the center position of the field of view of the X-ray imaging according to the second operation signal;
The X-ray diagnostic apparatus according to claim 1. The operation part of the foot switch is
Having at least a tread board that accepts the presence or absence of a stepping operation by the foot, and accepting a change operation of the center position of the field of view of the X-ray imaging via the tread board or another member;
The signal output part of the foot switch is
A stepping output unit that outputs the first operation signal when there is a stepping operation on the tread plate that accepts the presence or absence of a stepping operation;
A movement signal output unit that outputs a signal corresponding to a change operation of the center position of the visual field of the X-ray imaging;
Having
The X-ray diagnostic apparatus according to any one of claims 1 to 7. The footboard is
It is movable in the in-plane direction of the tread, and accepts a change operation of the center position by moving in the in-plane direction of the tread,
The movement signal output unit is
As a signal according to the change operation of the center position, a signal indicating the movement amount and the movement direction of the tread in the in-plane direction of the tread is output,
The visual field changing unit is
Changing the center position of the field of view of the X-ray imaging according to the amount and direction of movement of the tread in the in-plane direction of the tread;
The X-ray diagnostic apparatus according to claim 8. The operation unit is
The other member for accepting the change operation of the center position further includes at least one of a dog mechanism having a sensor and a dog and a switch,
The movement signal output unit is
Outputting at least one of a signal according to the number of times the switch is pressed and an output signal of the sensor according to the operation amount of the dog as a signal according to the change operation of the center position;
The X-ray diagnostic apparatus according to claim 8 or 9. An assigning unit for changing a function assigned to each of the plurality of operation signals output by the foot switch;
The X-ray diagnosis apparatus according to claim 1, further comprising: An imaging start unit that controls the X-ray source and the X-ray detector to start X-ray imaging when receiving a first operation signal corresponding to a first operation by a user's foot, and X based on the X-ray imaging An image generation unit that generates a line image and displays the line image on a display unit; and a visual field change unit that changes a visual field of the X-ray imaging according to a second operation signal according to a second operation by the foot. A foot switch for controlling an X-ray diagnostic apparatus,
An operation unit for receiving an operation by the foot;
A signal output unit that outputs the first operation signal in response to a first operation by the foot and outputs the second operation signal in response to a second operation by the foot;
With foot switch.

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