JP2014078443A - X-ray diagnostic device, high-voltage device, and method of controlling high voltage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an X-ray diagnostic device capable of switching driving among a plurality of X-ray tubes without using a high-voltage switch on a secondary side of a transformer, a high voltage device, and a method of controlling the high voltage device.SOLUTION: An X-ray diagnostic device includes: a plurality of X-ray tubes 22 and 32; a high-voltage transformer 74 which has its secondary side connected to the plurality of X-ray tubes 22 and 32 and its primary side connected to a high-voltage power supply part 71; a plurality of filament transformers 75 and 76 which are provided corresponding to the plurality of X-ray tubes 22 and 32 and also have their secondary sides connected to corresponding filaments of the X-ray tubes; and a primary-side switching part 73 which has one end connected to a filament power supply part 72 and the other end connected to a primary side of one of the plurality of filament transformers to make a connection between the filament power supply part 72 and the primary side of the one of the plurality of filament transformers 75 and 76.

Description

  Embodiments described herein relate generally to an X-ray diagnostic apparatus, a high voltage apparatus, and a method for controlling the high voltage apparatus.

  An X-ray diagnostic apparatus generally includes an X-ray tube that generates X-rays by a high voltage supplied from a high-voltage inverter, and an X-ray detector that is disposed opposite to the X-ray tube across the subject. The X-rays transmitted through are detected by a detector. Recently, an X-ray diagnostic apparatus has been developed that includes a plurality of sets of X-ray tubes and X-ray detectors, and can detect X-rays by switching to any of the sets depending on the region to be imaged. Yes. Further, in this type of X-ray diagnostic apparatus, there is one that drives a plurality of X-ray tubes by a single high voltage inverter.

JP 2006-244949 A

  When a plurality of X-ray tubes are driven by a single high-voltage inverter, a high-voltage switch that controls contact / separation of contacts by a movable mechanism is often provided on the secondary side of the transformer that boosts the inverter output. This type of high-voltage switch is provided on the secondary side of the transformer and needs to operate under high pressure, so that it can be immersed in insulating oil to ensure the creepage distance of the movable mechanism of the high-voltage switch. Insulation from the housing and other circuit components is ensured.

  However, using a high-voltage switch with a movable mechanism that needs to be immersed in insulating oil causes problems of oil leakage, and it is necessary to secure the space distance and creepage distance of the movable mechanism. It is difficult to reduce the size and weight.

  In order to solve the above-described problems, an X-ray diagnostic apparatus according to an embodiment of the present invention has a plurality of X-ray tubes and a secondary side connected to the plurality of X-ray tubes, and a high-voltage power supply. A plurality of filament transformers provided corresponding to each of a plurality of X-ray tubes, and each having a secondary side connected to a filament of the corresponding X-ray tube; One end is connected to the filament power supply unit, and the other end is connected to the primary side of any one of the plurality of filament lances, so that the filament power supply unit and any one primary side of the plurality of filament transformers The primary side switching part which implement | achieves connection of this is provided.

1 is a schematic overall configuration diagram showing an example of an X-ray diagnostic apparatus including a high voltage apparatus according to an embodiment of the present invention. The circuit block diagram which shows an example of a high voltage apparatus. 1 is a block diagram illustrating an example of an image processing apparatus. The flowchart which shows the procedure at the time of switching the drive of a several X-ray tube, without using a high voltage | pressure switch for the secondary side of a transformer by CPU of the main control part shown in FIG.

  Embodiments of an X-ray diagnostic apparatus, a high-voltage apparatus, and a control method for a high-voltage apparatus according to the present invention will be described with reference to the accompanying drawings.

  The high voltage apparatus according to an embodiment of the present invention has a plurality of X-ray tubes, and can be used for an X-ray diagnostic apparatus that appropriately switches X-ray tubes to be used according to imaging conditions.

  FIG. 1 is a schematic overall configuration diagram showing an example of an X-ray diagnostic apparatus 10 including a high voltage apparatus 1 according to an embodiment of the present invention. In the following description, an example in which the X-ray diagnostic apparatus 10 has two X-ray tubes will be described.

  As shown in FIG. 1, the X-ray diagnostic apparatus 10 includes a first imaging unit 11, a second imaging unit 12, a shutter driving unit 13, a controller 14, and an image processing device 15 in addition to the high voltage apparatus 1.

  The first imaging unit 11 includes a first X-ray detection unit (first detection unit) 21, a first X-ray tube (first tube) 22, and a shutter for the first tube 22 (first shutter). ) 23 having a first X-ray generator 24, a C-arm 25, and a bed 26.

  The first detection unit 21 is provided at one end of the C arm 25 so as to be opposed to the first tube 22 across the subject P supported by the top plate 27 of the bed 26. The first detection unit 21 includes an image intensifier, a TV camera, and the like, detects X-rays irradiated on the first detection unit 21, and based on the detected X-rays, X-ray fluoroscopic images and X-ray captured images (Hereinafter, X-ray fluoroscopic images and X-ray imaging images are collectively referred to as X-ray diagnostic images) are output. This image data is given to the image processing device 15 via the controller 14. In addition, the 1st detection part 21 may contain a flat panel detector (FPD: flat panel detector).

  The first X-ray generator 24 is provided at the other end of the C arm 25 and has a first tube 22 and a first shutter 23.

  The first tube 22 is applied with a voltage by the high voltage device 1 and generates X-rays. X-rays generated by the first tube 22 are emitted toward the subject P.

  The first shutter 23 is an X-ray irradiation field stop composed of a plurality of lead feathers, for example. It is controlled by the controller 14 via the shutter drive unit 13 and takes either an open state or a closed state. In the closed state, the first shutter 23 blocks X-rays emitted from the first tube 22. On the other hand, in the open state, the first shutter 23 adjusts the irradiation range of the X-rays irradiated from the first tube 22.

  In addition, as a member that realizes a function of controlling transmission and shielding of X-rays by opening and closing, which is a shutter function according to the present embodiment, an opening and closing shutter made of a metal plate or the like is used separately from the X-ray irradiation field stop. Also good. In this case, the first shutter 23 and the second shutter 33 each have an X-ray irradiation field stop for adjusting the irradiation range and an open / close shutter made of a metal plate. In this case, the image processing apparatus 15 controls the opening / closing of the open / close shutter formed of the metal plate via the controller 14 and controls the X-ray irradiation field stop corresponding to the open / close shutter that is in the open state to perform irradiation. While adjusting the visual field, the X-ray irradiation field stop corresponding to the open / close shutter in the closed state may be closed to enhance the X-ray shielding effect.

  The C arm 25 holds the first X-ray generator 24 and the first detection unit 21 together. When the C arm 25 is driven under the control of the controller 14, the first X-ray generator 24 and the first detection unit 21 move around the subject P as a unit. Although FIG. 1 shows an example of an under tube type in which the C arm 25 supports the first X-ray generator 24 so as to be positioned below the top plate 27, the first X-ray generator 24 is shown. May be an overtube type that supports the upper plate 27 so as to be positioned above the top plate 27.

  The bed 26 is installed on the floor and supports the top board 27. The couch 26 is controlled by the controller 14 to move or rotate (roll) the top plate 27 in the horizontal direction and the vertical direction.

  On the other hand, the second imaging unit 12 includes a second X-ray detection unit (second detection unit) 31, a second X-ray tube (second tube) 32, and a shutter (second tube) for the second tube 32. 2 X-ray generator 34 having (2 shutter) 33. The second detection unit 31, the second tube 32, and the second shutter 33 have the same configurations and functions as the first detection unit 21, the first tube 22, and the first shutter 23, respectively, and thus description thereof is omitted. The second imaging unit 12 captures an image for generating an X-ray diagnostic image of the chest (chest X-rays) for the subject P that has been imaged to generate an abdominal X-ray diagnostic image by the first imaging unit 11, for example. Used for imaging).

  That is, the first imaging unit 11 and the second imaging unit 12 are common in that they have a combination of an X-ray detection unit and an X-ray tube, and the portions suitable for imaging are different from each other.

  The shutter drive unit 13 is controlled by the image processing device 15 via the controller 14, and when a user gives an instruction to start imaging of the subject P, the shutter corresponding to the X-ray tube used in this imaging is opened. At the same time, the plurality of shutters are controlled so that all other shutters are closed.

  In the present embodiment, the shutter drive unit 13 is controlled by the image processing device 15 via the controller 14 and opens one of the first shutter 23 and the second shutter 33 according to the tube used for imaging. Control is performed so that the other is closed.

  Further, when there is a defect (abnormality) in at least one of the first shutter 23 and the second shutter 33, the shutter drive unit 13 gives information to that effect to the image processing device 15 via the controller 14.

  The controller 14 is controlled by the image processing device 15 to control the high-voltage device 1, the first detection unit 21, the first tube 22, the C arm 25, the bed 26, and the shutter drive unit 13, so that the subject P The imaging of the X-ray diagnostic image by the first imaging unit 11 is executed. In addition, the controller 14 is controlled by the image processing device 15 to control the high voltage device 1, the second detection unit 31, the second tube 32, and the shutter drive unit 13, and thereby the second imaging unit of the subject P. 12 performs imaging of an X-ray diagnostic image.

Next, the configuration of the high voltage device 1 will be described.
FIG. 2 is a circuit configuration diagram showing an example of the high-voltage device 1. FIG. 2 shows an example in which each of the first tube 22 and the second tube 32 is a bifocal tube. FIG. 2 is a diagram showing an example in which the first tube 22 is used.

  The high voltage device 1 includes a high voltage inverter circuit (high voltage inverter) 71 as a high voltage power supply unit, a filament inverter circuit (filament inverter) 72 as a filament power supply unit, a primary side switching unit 73, a high voltage A transformer 74, a filament transformer (first filament transformer) 75 for the first tube 22, a filament transformer (second filament transformer) 76 for the second tube 32, and a rectifier circuit 77 are included.

  The high voltage device 1 includes a low voltage circuit unit 81 and a high voltage circuit unit 82. The low voltage circuit unit 81 of the high voltage device 1 according to the present embodiment includes a high voltage inverter circuit (high voltage inverter) 71, a filament inverter circuit (filament inverter) 72, a primary side switching unit 73, a high voltage transformer. 74, a circuit on the primary side of the first filament transformer 75 and the second filament transformer 76. The high voltage circuit unit 82 includes secondary windings of these transformers 74 to 76 and a rectifier circuit 77.

  As shown in FIG. 2, the high voltage circuit unit 82 is connected to the first tube 22 and the second tube 32 only by wiring without using any switching circuit having a movable mechanism.

  Each of the first tube 22 and the second tube 32 according to the present embodiment is a bifocal tube. For this reason, the first filament transformer 75 that supplies electric power to the filament of the first tube 22 includes the first large-focus transformer 75a and the first small-focus transformer 75b. These transformers 75a and 75b have a common wiring C, and the wirings L and C of the first large-focus transformer 75a are connected to the large-focus filament of the first tube 22, and the wiring of the first small-focus transformer 75b. C and S are connected to the small focal length filament of the first tube 22.

  Similarly, the second filament transformer 76 that supplies electric power to the filament of the second tube 32 includes a second large focus transformer 76a and a second small focus transformer 76b. These transformers 76a and 76b have a common wiring C. The common wiring C is connected to the common wiring C of the first filament transformer 75 and is equipotential. The wires L and C of the second large focus transformer 76 a are connected to the large focus filament of the second tube 32, and the wires C and S of the second small focus transformer 76 b are the small focus of the second tube 32. Connected to the filament.

  The secondary side of the high voltage transformer 74 is connected to the rectifier circuit 77. The positive side of the rectifier circuit 77 is connected to the anodes of the first tube 22 and the second tube 32, while the negative side of the rectifier circuit 77 is the common wiring C as with the first filament transformer 75 and the second filament transformer 76. Connected.

  That is, no switching circuit having a movable mechanism is used for the high voltage circuit unit 82. For this reason, the high voltage circuit part 82 which deals with a high voltage can easily insulate from other members and the housing of the high voltage device 1 by being solid molded without being immersed in insulating oil. Therefore, the high voltage circuit unit 82 according to the present embodiment is formed into a solid mold.

  On the other hand, the primary side of the high-voltage transformer 74 is connected to a high-voltage inverter 71 serving as a high-voltage power supply unit that is supplied with power from a DC power source (not shown) and supplies AC power.

  A filament inverter 72 serving as a filament power supply unit converts electric power supplied from a DC power source (not shown) into AC power, and converts the electric power into a first filament transformer 75 and a second filament transformer 76 via a primary side switching unit 73. Supply AC power.

  In the present embodiment, since the filament inverter 72 corresponds to a two-focus type tube, an inverter for large focus filament (inverter for large focus) 72a and an inverter for small focus filament (small focus inverter) 72b are provided. Have. The primary side switching unit 73 includes a switching unit for large focal filament (switching unit for large focus) 73a and a switching unit for small focal filament (switching unit for small focus) 73b.

  The large focal point inverter 72a is connected to one of the first large focal point transformer 75a and the second large focal point transformer 76a via the large focal point switching unit 73a. On the other hand, the small focus inverter 72b is connected to one of the first small focus transformer 75b and the second small focus transformer 76b via the small focus switching section 73b.

  The primary side switching unit 73 is controlled by the image processing device 15 via the controller 14 and includes a filament transformer and a filament inverter 72 whose secondary side is connected to a filament corresponding to an X-ray tube used in imaging. Connecting. For example, when the first tube 22 is used, the filament transformer whose secondary side is connected to the filament corresponding to the first tube 22 is the first filament transformer 75. Therefore, when the first tube 22 is used, the primary side switching unit 73 connects the filament inverter 72 and the first filament transformer 75 (see FIG. 2). When the first tube 22 is used, the shutter drive unit 13 is controlled by the image processing device 15 via the controller 14 to open the first shutter 23 and close the second shutter 33. (See FIG. 2).

Next, the configuration of the image processing device 15 will be described.
FIG. 3 is a block diagram illustrating an example of the image processing apparatus 15. As illustrated in FIG. 3, the image processing apparatus 15 includes an input unit 41, a display unit 42, a speaker 43, a storage unit 44, and a main control unit 45.

  The input unit 41 is configured by a general input device such as a keyboard, a touch panel, or a numeric keypad, and outputs an operation input signal corresponding to a user operation to the main control unit 45.

  The display unit 42 is configured by a general display output device such as a liquid crystal display or an OLED (Organic Light Emitting Diode) display. The X-ray diagnostic image, the first shutter 23, and the second shutter 33 are controlled by the main control unit 45. Various kinds of information such as warning information indicating a malfunction of the opening / closing operation is displayed.

  The speaker 43 outputs a sound corresponding to various information such as warning information indicating an opening / closing operation failure of the first shutter 23 or the second shutter 33 under the control of the main control unit 45. In the following description, “speech” means a sound obtained by reading out text data with a sound recognized as a human voice by a listener. In addition to “sound”, “sound” includes “music”, “sound effect (beep sound, etc.)” and the like.

  The storage unit 44 has a configuration including a CPU-readable recording medium such as a magnetic or optical recording medium or a semiconductor memory, and part or all of the programs and data in the storage medium are stored in an electronic network. You may comprise so that it may be downloaded via. The storage unit 44 is controlled by the main control unit 45 and stores image data of X-ray diagnostic images detected by the first imaging unit 11 and the second imaging unit 12.

  The main control unit 45 includes a storage medium such as a CPU, a RAM, and a ROM, and controls the processing operation of the image processing apparatus 15 according to a program stored in the storage medium.

  The CPU of the main control unit 45 loads the tube switching program stored in the storage medium such as the ROM and the data necessary for executing the program into the RAM, and in accordance with this program, the secondary side of the transformer A process of switching the driving of a plurality of X-ray tubes without using a high-pressure switch is executed.

  The RAM of the main control unit 45 provides a work area for temporarily storing programs and data executed by the CPU. The storage medium such as the ROM of the main control unit 45 stores a startup program for the image processing device 15, a tube switching program, and various types of data necessary for executing these programs.

  A storage medium such as a ROM has a configuration including a recording medium readable by a CPU, such as a magnetic or optical recording medium or a semiconductor memory, and a part of programs and data in the storage medium. Or you may comprise so that all may be downloaded via an electronic network.

  As shown in FIG. 3, the CPU of the main control unit 45 functions as at least the imaging control unit 51 and the image generation unit 52 by the tube switching program. Each of the units 51 and 52 uses a required work area of the RAM as a temporary storage location for data.

  The imaging control unit 51 controls the high-voltage device 1, the first imaging unit 11, the second imaging unit 12, and the shutter driving unit 13 via the controller 14 based on the imaging conditions set by the user, and an X-ray diagnostic image. Image data is acquired, and this image data is stored in the storage unit 44.

  The image generation unit 52 generates an X-ray diagnostic image based on the image data stored in the storage unit 44 and causes the display unit 42 to display it.

  As shown in FIG. 3, the imaging control unit 51 includes at least an imaging condition acquisition unit 61, a shutter control unit 62, a switching control unit 63, an inverter control unit 64, and a warning unit 65.

  The imaging condition acquisition unit 61 acquires imaging conditions set by the user via the input unit 41, and acquires information on an X-ray tube used for imaging based on the imaging conditions.

  The shutter control unit 62 controls the shutter driving unit 13 via the controller 14 so that the shutter corresponding to the X-ray tube used for imaging is opened and the other shutters are closed.

  The shutter control unit 62 also provides information indicating that there is a defect (abnormality) in the open / closed state of at least one of the first shutter 23 and the second shutter 33 via the controller 14 from the shutter driving unit 13 (hereinafter referred to as shutter abnormality information). ) Is given to the warning unit 65 to that effect.

  The switching control unit 63 switches the primary side switching unit 73 via the controller 14 so as to connect the filament transformer and the filament inverter 72 connected to the filament corresponding to the X-ray tube used for imaging. Control.

  The inverter control unit 64 drives the filament inverter 72 and heats the X-ray tube used for imaging via the filament lance connected to the filament inverter 72 by the primary side switching unit 73. Further, the inverter control unit 64 drives the high voltage inverter 71 to emit X-rays from the X-ray tube used for imaging via the high voltage transformer 74 and the rectifier circuit 77.

  When the warning unit 65 receives shutter abnormality information from the shutter control unit 62, the warning unit 65 issues a warning by presenting information to that effect to the user via the display unit 42 or the speaker 43. Further, when the warning unit 65 receives the shutter abnormality information from the shutter control unit 62, the warning unit 65 instructs the inverter control unit 64 to prohibit the driving of the high voltage inverter 71 and the filament inverter 72.

  Next, an example of the operation of the X-ray diagnostic apparatus 10 including the high voltage apparatus 1 according to the present embodiment will be described.

  FIG. 4 is a flowchart showing a procedure when the CPU of the main controller 45 shown in FIG. 3 switches the driving of a plurality of X-ray tubes without using a high-voltage switch on the secondary side of the transformer. In FIG. 4, reference numerals with numbers added to S indicate steps in the flowchart.

  This procedure starts when the user instructs the imaging control unit 51 to start acquisition of an X-ray diagnostic image via the input unit 41.

  First, in step S1, the imaging condition acquisition unit 61 acquires imaging conditions set by the user via the input unit 41, and acquires information on the X-ray tube used for imaging based on the imaging conditions. For example, the imaging condition acquisition unit 61 acquires information indicating that the first tube 22 is used for imaging based on the imaging conditions.

  Next, in step S2, the shutter control unit 62 opens the shutter corresponding to the X-ray tube used for imaging, and closes the other shutters via the controller 14 so that the other shutters are closed. 13 is controlled. For example, when the first tube 22 is used for imaging, the shutter control unit 62 controls the shutter drive unit 13 via the controller 14 to open the first shutter 23 and close the second shutter 33. (See FIG. 2).

  Next, in step S <b> 3, the shutter control unit 62 determines whether shutter abnormality information has been received from the shutter driving unit 13 via the controller 14. If no shutter abnormality information has been received, the process proceeds to step S4. On the other hand, if shutter abnormality information is received, the process proceeds to step S7.

  Next, in step S4, the switching control unit 63 causes the controller 14 to connect the filament transformer whose secondary side is connected to the filament corresponding to the X-ray tube used for imaging and the filament inverter 72. The primary side switching unit 73 is controlled. For example, when the first tube 22 is used for imaging, the switching control unit 63 is configured such that the large focus switching unit 73a connects the large focus inverter 72a and the first large focus transformer 75a, and the small focus switching unit. 73b controls the primary side switching unit 73 to connect the small focus inverter 72b and the first small focus transformer 75b.

  Next, in step S5, the inverter control unit 64 drives the filament inverter 72, and the X-ray tube used for imaging is connected via the filament lance connected to the filament inverter 72 by the primary side switching unit 73. Heat. For example, when the first tube 22 is used for imaging, the inverter control unit 64 uses the first large focus transformer 75a connected to the large focus inverter 72a by the large focus switching unit 73a. The large focus filament 22 is heated, and the small focus filament of the first tube 22 is heated through the first small focus transformer 75b connected to the small focus inverter 72b by the small focus switching unit 73b. .

  Next, in step S <b> 6, the inverter control unit 64 drives the high voltage inverter 71 to emit X-rays from the X-ray tube used for imaging via the high voltage transformer 74 and the rectifier circuit 77. For example, when the first tube 22 is used for imaging, the inverter control unit 64 applies a high voltage to the first tube 22 whose filament is heated via the high voltage transformer 74 and the rectifier circuit 77, X-rays are emitted from the first tube 22 and the series of procedures is completed.

  On the other hand, if it is determined in step S3 that the shutter control unit 62 has received the shutter abnormality information, the warning unit 65 presents the shutter abnormality information to the user via the display unit 42 or the speaker 43 in step S7. And instructing the inverter control unit 64 to prohibit the driving of the high-voltage inverter 71 and the filament inverter 72, and the series of procedures ends.

  With the above procedure, the driving of a plurality of X-ray tubes can be switched without using a high voltage switch on the secondary side of the transformer.

  The high voltage device 1 according to this embodiment performs a switching operation in the low voltage circuit unit 81 that is a low voltage area, and the high voltage circuit unit 82 does not use a switching circuit having a movable mechanism. For this reason, the high voltage circuit part 82 which deals with a high voltage can easily insulate from other members and the housing of the high voltage device 1 by being solid molded without being immersed in insulating oil. Therefore, the high voltage apparatus 1 according to the present embodiment and the X-ray diagnostic apparatus 10 including the high voltage apparatus 1 can be reduced in size and weight as compared with an apparatus that requires insulation with insulating oil.

  Further, the X-ray diagnostic apparatus 10 including the high voltage apparatus 1 according to the present embodiment closes the shutter corresponding to the X-ray tube that is not used for imaging. For this reason, even if an unintended X-ray is radiated from the X-ray tube due to an unintended current such as a dark current flowing in the X-ray tube not used for imaging, the unintended X-ray is reliably generated by the shutter. Can be shielded. Therefore, according to the X-ray diagnostic apparatus 10 including the high voltage apparatus 1 according to the present embodiment, unnecessary exposure of the user and the subject P can be prevented in advance.

  In addition, the X-ray diagnostic apparatus 10 including the high voltage apparatus 1 according to the present embodiment presents information to that effect to the user and prohibits driving of the inverters 71 and 72 when there is an abnormality in opening and closing of the shutter. be able to. For this reason, high-intensity X-rays are not intentionally scattered by the closed shutter, and unnecessary exposure of the user and the subject P can be prevented in advance.

  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.

DESCRIPTION OF SYMBOLS 1 High voltage apparatus 10 X-ray diagnostic apparatus 15 Image processing apparatus 22 1st tube 23 1st shutter 32 2nd tube 33 2nd shutter 51 Imaging control part 52 Image generation part 61 Imaging condition acquisition part 62 Shutter control part 63 Switching Control section 64 Inverter control section 65 Warning section 71 High voltage inverter 72 Filament inverter 72a Large focus inverter 72b Small focus inverter 73 Primary side switching section 73a Large focus switching section 73b Small focus switching section 74 High voltage transformer 75 1 filament transformer 75a first large focus transformer 75b first small focus transformer 76 second filament transformer 76a second large focus transformer 76b second small focus transformer 77 rectifier circuit 81 low voltage circuit section 82 high voltage circuit section

Claims (9)

A plurality of X-ray tubes;
A high-voltage transformer having a secondary side connected to the plurality of X-ray tubes and a primary side connected to a high-voltage power supply unit;
A plurality of filament transformers provided corresponding to each of the plurality of X-ray tubes, each having a secondary side connected to a filament of the corresponding X-ray tube;
One end of the filament power supply section and one of the plurality of filament transformers are connected by connecting one end to the filament power supply section and connecting the other end to the primary side of any one of the plurality of filament lances. A primary side switching unit for realizing a connection with the secondary side;
An X-ray diagnostic apparatus comprising: The secondary side circuit of the high voltage transformer and the secondary side circuit of the plurality of filament transformers are connected to the plurality of X-ray tubes by wiring without using a switching circuit having a movable mechanism.
The X-ray diagnostic apparatus according to claim 1. A high voltage circuit unit having a secondary winding of the high voltage transformer and a secondary winding of the plurality of filament transformers is solid-molded.
The X-ray diagnostic apparatus according to claim 1 or 2. The switching unit is
When there is an instruction to start imaging the subject, a filament transformer in which a secondary side is connected to a filament corresponding to the X-ray tube used for imaging among the plurality of X-ray tubes, and the filament power supply unit, Connecting,
The X-ray diagnostic apparatus according to any one of claims 1 to 3. A plurality of openable and closable shutters provided in each of the plurality of X-ray tubes and transmitting X-rays radiated from the X-ray tubes in the open state, and shielding in the closed state;
Further comprising
The plurality of shutters are
When there is an instruction to start imaging of the subject, the shutter corresponding to the X-ray tube used for imaging among the plurality of X-ray tubes is set to the open state and the other shutters are set to the closed state. ,
The X-ray diagnostic apparatus according to claim 4. If the opening / closing operation of the plurality of shutters is defective, the opening / closing operation of the plurality of shutters is performed by at least one of an audio output and buzzer output via a speaker and a warning display on a display unit provided at a position visible to the user A warning section that presents information to the user that there is a defect,
The X-ray diagnostic apparatus according to claim 5, further comprising: The high voltage power supply unit and the filament power supply unit are:
Driving is prohibited when there is a defect in the open / closed state of the plurality of shutters,
The X-ray diagnostic apparatus according to claim 6. A high voltage transformer in which a secondary side is connected to a plurality of X-ray tubes, and a primary side is connected to a high voltage power supply unit;
A plurality of filament transformers corresponding to each of the plurality of X-ray tubes and having secondary sides connected to the filaments of the corresponding X-ray tubes;
One end of the filament power supply section and one of the plurality of filament transformers are connected by connecting one end to the filament power supply section and connecting the other end to the primary side of any one of the plurality of filament lances. A primary side switching unit for realizing a connection with the secondary side;
High voltage device with A corresponding X-ray tube corresponding to each of the plurality of X-ray tubes and a high-voltage transformer having a secondary side connected to the plurality of X-ray tubes and a primary side connected to a high-voltage power feeding unit A plurality of filament transformers each having a secondary side connected to the filament, and one end connected to the filament power supply unit and the other end connected to the primary side of any one of the plurality of filament lances. A control method for a high-voltage device, comprising: a primary power supply unit and a primary side switching unit that realizes a connection between any one of the plurality of filament transformers,
Receiving an imaging start instruction of a subject and acquiring information of an X-ray tube used in the imaging;
Controlling the switching unit to connect a filament transformer having a secondary side connected to the filament corresponding to the X-ray tube used, and the filament power supply unit;
A method for controlling a high voltage device.

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