JP2023094971A - Medical bed apparatus, x-ray ct apparatus, and method of controlling medical bed apparatus - Google Patents

Abstract

To reduce the risk of infection through a medical bed apparatus.SOLUTION: A medical bed apparatus according to an embodiment includes a top plate, a support frame, a first cleaning unit, a second cleaning unit, and a control unit. A subject is placed on the top plate during examination. The support frame supports the top plate movably in a longitudinal direction of the top plate. The first cleaning unit is fixed to a side of the top plate opposite to a gantry in the longitudinal direction, and is configured to be capable of cleaning an upper surface and both side surfaces of the support frame. The second cleaning unit is fixed to the gantry side in a longitudinal direction of the support frame, and is configured to be capable of cleaning an upper surface of the top plate. When the subject is not placed on the top plate, the control unit changes relative positions of the top plate and the support frame in the longitudinal direction, thereby cleaning the support frame by the first cleaning unit and cleaning the top plate by the second cleaning unit.SELECTED DRAWING: Figure 1

Description

The embodiments disclosed in the present specification and drawings relate to a medical bed apparatus, an X-ray CT apparatus, and a control method for the medical bed apparatus.

2. Description of the Related Art Conventionally, various medical devices such as diagnostic imaging devices such as X-ray computed tomography (CT) devices and therapeutic devices have been used for medical procedures such as examination and treatment. For example, in a medical device provided with a bed, the bare skin of the subject may come into direct contact with the bed when the subject gets on or off the bed. In order to prevent the spread of infection due to the movement of bacteria and viruses between multiple subjects, an operator such as a technician should use a disinfectant solution, for example, after each medical treatment for one subject. The bed was cleaned and disinfected using an antiseptic mop.

Under such circumstances, when the bed is cleaned and disinfected, the operator may come into contact with bacteria and viruses attached to the bed, increasing the risk of infection of the operator. Also, if there are omissions in cleaning and disinfection work, the next subject using the bed may come into contact with bacteria or viruses that remain attached to the bed, increasing the risk of infection for the subject. there were.

JP-A-7-313561

One of the problems to be solved by the embodiments disclosed in this specification and the like is to reduce the risk of infection via a medical bed apparatus. However, the problem to be solved by the embodiments disclosed in this specification and drawings is not limited to the above problem. Problems corresponding to each configuration shown in the embodiments described later can also be positioned as other problems.

A medical bed apparatus according to an embodiment includes a top plate, a support frame, a first cleaning unit, a second cleaning unit, and a controller. A subject is placed on the top plate during an examination. The support frame supports the top plate movably in the longitudinal direction of the top plate. The first cleaning unit is fixed to a side of the top plate opposite to the pedestal in the longitudinal direction, and is configured to be able to clean an upper surface and both side surfaces of the support frame. The second cleaning unit is fixed to the gantry side of the support frame in the longitudinal direction, and is configured to be able to clean the upper surface of the top plate. The control unit changes the relative positions of the top plate and the support frame in the longitudinal direction when the subject is not placed on the top plate, thereby allowing the first cleaning unit to support the object. The frame is cleaned and the top board is cleaned by the second cleaning unit.

FIG. 1 is a diagram showing an example of the configuration of an X-ray computed tomography (CT) apparatus equipped with a medical bed control apparatus according to the first embodiment. FIG. 2 is a diagram schematically showing an example of the configuration of the medical bed apparatus according to the first embodiment; FIG. 3 is a diagram schematically showing an example of the configuration of a cleaning mechanism mounted on the medical bed apparatus according to the first embodiment; FIG. 4 is a diagram schematically showing an example of the configuration of a cleaning mechanism mounted on the medical bed apparatus according to the first embodiment; FIG. 5 is a flow chart showing an example of control processing of the medical bed apparatus according to the first embodiment. FIG. 6 is a diagram schematically showing an example of the configuration of the cleaning mechanism mounted on the medical bed apparatus according to the second embodiment. FIG. 7 is a diagram schematically showing an example of the configuration of the cleaning mechanism mounted on the medical bed apparatus according to the second embodiment. FIG. 8 is a diagram schematically showing an example of the configuration of the cleaning mechanism mounted on the medical bed apparatus according to the third embodiment.

Hereinafter, a medical bed apparatus, an X-ray CT apparatus, and a method of controlling the medical bed apparatus according to each embodiment will be described with reference to the drawings. In the following description, constituent elements having the same or substantially the same functions as those described above with respect to the previous drawings are denoted by the same reference numerals, and duplicate description will be given only when necessary. Moreover, even when the same parts are shown, the dimensions and ratios may be different depending on the drawing. In addition, for example, from the viewpoint of ensuring the visibility of the drawings, only main or representative constituent elements are given reference numerals in the explanation of each drawing, and constituent elements having the same or substantially the same function are not indicated with reference numerals. It may not be attached.

In each embodiment described below, a case where the medical bed apparatus according to each embodiment is a bed for an X-ray computed tomography (CT) apparatus will be exemplified. In other words, in each embodiment described below, an X-ray computed tomography (CT) apparatus equipped with the medical bed control device according to each embodiment is illustrated.

For example, there are various types of X-ray CT apparatuses such as third-generation CT and fourth-generation CT, and any type can be applied to each embodiment. Here, the third-generation CT is a Rotate/Rotate-Type in which an X-ray tube and a detector are integrally rotated around the subject. The fourth-generation CT is a Stationary/Rotate-Type in which a large number of ring-shaped X-ray detection elements are fixed and only the X-ray tube rotates around the subject.

The medical bed apparatus according to each embodiment may be a bed of a medical image diagnostic apparatus other than the X-ray CT apparatus. In this case, the processor installed in each medical image diagnostic apparatus can implement the functions according to each embodiment by executing the program read from the ROM or the like and loaded into the RAM. Other medical image diagnostic devices include MRI (Magnetic Resonance Imaging) devices, SPECT (Single Photon Emission Computed Tomography) devices, PET (Positron Emission Computed Tomography) devices, SPECT devices and X-ray CT devices. Integrated SPECT - There are various medical image diagnostic apparatuses such as a CT apparatus, a PET-CT apparatus in which a PET apparatus and an X-ray CT apparatus are integrated.

Note that the control of the medical bed apparatus according to each embodiment is not limited to the X-ray CT apparatus, but is performed by a processor such as a CPU (Central Processing Unit) and a memory such as a ROM (Read Only Memory) or a RAM (Random Access Memory). may be realized by an independent device such as a computer having as hardware resources. In this case, a processor installed in a computer can implement various functions according to each embodiment by executing a program read from a ROM or the like and loaded into a RAM. This computer may be implemented by a workstation provided outside the X-ray CT apparatus, a PACS (Picture Archiving and Communication System) viewer, or a combination thereof.

(First embodiment)
FIG. 1 is a diagram showing an example of the configuration of an X-ray CT apparatus 1 equipped with a medical bed control apparatus according to an embodiment. The X-ray CT apparatus 1 irradiates a subject P with X-rays from an X-ray tube 11 and detects the irradiated X-rays with an X-ray detector 12 . X-ray CT apparatus 1 generates a CT image of subject P based on the output from X-ray detector 12 .

As shown in FIG. 1, the X-ray CT apparatus 1 has a gantry 10, a bed 30 and a console 40. As shown in FIG. In addition, in FIG. 1, a plurality of mounts 10 are drawn for convenience of explanation. The gantry 10 is a scanning device having a configuration for X-ray CT imaging of the subject P. As shown in FIG. The bed 30 is a transport device for placing a subject P to be subjected to X-ray CT imaging and positioning the subject P. As shown in FIG. A console 40 is a computer that controls the gantry 10 . For example, the gantry 10 and the bed 30 are installed in a CT examination room, and the console 40 is installed in a control room adjacent to the CT examination room. The gantry 10, the bed 30, and the console 40 are connected by wire or wirelessly so as to be able to communicate with each other.

Note that the console 40 does not necessarily have to be installed in the control room. For example, the console 40 may be installed in the same room together with the gantry 10 and the bed 30 . Also, the console 40 may be incorporated into the gantry 10 .

In this embodiment, the longitudinal direction of the rotation axis of the rotating frame 13 or the top plate 33 of the bed 30 in the non-tilt state is the Z-axis direction, and the axial direction perpendicular to the Z-axis direction and horizontal to the floor surface is the X direction. The axial direction, which is orthogonal to the Z-axis direction and perpendicular to the floor surface, is defined as the Y-axis direction.

As shown in FIG. 1, the gantry 10 includes an X-ray tube 11, an X-ray detector 12, a rotating frame 13, an X-ray high voltage device 14, a control device 15, a wedge 16, a collimator 17 and a data acquisition system. : DAS) 18.

The X-ray tube 11 is a vacuum tube having a cathode (filament) that generates thermoelectrons and an anode (target) that generates X-rays upon collision with thermoelectrons. The X-ray tube 11 uses a high voltage supplied from the X-ray high voltage device 14 to irradiate the subject P with X-rays by irradiating thermal electrons from the cathode to the anode.

Note that hardware for generating X-rays is not limited to the X-ray tube 11 . For example, instead of using the X-ray tube 11, X-rays may be generated using a fifth generation system. The 5th generation system consists of a focus coil that focuses the electron beam generated from the electron gun, a deflection coil that electromagnetically deflects it, and a target ring that surrounds the half circumference of the subject P and generates X-rays by colliding the deflected electron beam. including.

The X-ray detector 12 detects X-rays emitted from the X-ray tube 11 and passing through the subject P, and outputs an electrical signal corresponding to the dose of the detected X-rays to the DAS 18 . The X-ray detector 12 has, for example, an X-ray detection element array in which a plurality of X-ray detection elements are arranged in the channel direction along one circular arc centering on the focal point of the X-ray tube 11 . The X-ray detector 12 has, for example, a structure in which a plurality of X-ray detection elements are arranged in the slice direction (column direction, row direction) in the channel direction. Also, the X-ray detector 12 is, for example, an indirect conversion type detector having a grid, a scintillator array and a photosensor array. The scintillator array has a plurality of scintillators. The scintillator has a scintillator crystal that outputs an amount of light corresponding to the amount of incident X-rays. The grid has an X-ray shielding plate arranged on the X-ray incident surface side of the scintillator array and having a function of absorbing scattered X-rays. Note that the grid may also be called a collimator (one-dimensional collimator or two-dimensional collimator). The photosensor array has a function of converting the amount of light from the scintillator into an electrical signal. As the optical sensor, for example, a photomultiplier tube (photomultiplier: PMT) or the like is used. The X-ray detector 12 may be a direct conversion type detector having a semiconductor element that converts incident X-rays into electrical signals. Here, the X-ray detector 12 is an example of a detection section.

The rotating frame 13 is an annular frame that supports the X-ray tube 11 and the X-ray detector 12 so as to face each other and rotates the X-ray tube 11 and the X-ray detector 12 by means of a control device 15, which will be described later. An image field of view (FOV) is set in the opening 19 of the rotating frame 13 . For example, the rotating frame 13 is a casting made of aluminum. In addition to the X-ray tube 11 and the X-ray detector 12, the rotating frame 13 can also support the X-ray high voltage device 14, the wedge 16, the collimator 17, the DAS 18, and the like. Also, the rotating frame 13 can further support various configurations not shown in FIG.

The X-ray high voltage device 14 has a high voltage generator and an X-ray controller. The high voltage generator has electric circuits such as a transformer and a rectifier, and generates a high voltage to be applied to the X-ray tube 11 and a filament current to be supplied to the X-ray tube 11 . The X-ray control device controls the output voltage according to the X-rays emitted by the X-ray tube 11 . The high voltage generator may be of a transformer type or an inverter type. The X-ray high-voltage device 14 may be provided on the rotating frame 13 within the gantry 10 or may be provided on a fixed frame (not shown) within the gantry 10 . Note that the fixed frame is a frame that rotatably supports the rotating frame 13 .

The control device 15 includes a drive mechanism such as a motor and an actuator, and a processing circuit having a processor and memory for controlling the drive mechanism. The control device 15 receives input signals from the input interface 43 , an input interface provided in the gantry 10 , and the like, and controls the operations of the gantry 10 and the bed 30 . The operation control by the control device 15 includes, for example, control for rotating the rotating frame 13, control for tilting the gantry 10, control for operating the bed 30, and the like. The control for tilting the gantry 10 is performed by the control device 15 rotating the rotating frame 13 about an axis parallel to the X-axis direction based on inclination angle (tilt angle) information input through an input interface attached to the gantry 10. It is realized by letting Note that the control device 15 may be provided on the gantry 10 or may be provided on the console 40 . Here, the control device 15 may be an example of a medical bed control device.

Wedge 16 is a filter for adjusting the dose of X-rays emitted from X-ray tube 11 . Specifically, the wedge 16 transmits and attenuates the X-rays irradiated from the X-ray tube 11 so that the X-rays irradiated from the X-ray tube 11 to the subject P have a predetermined distribution. It is a filter that For example, the wedge 16 is a wedge filter or a bow-tie filter, and is constructed by processing aluminum or the like so as to have a predetermined target angle and a predetermined thickness.

The collimator 17 limits the irradiation range of X-rays transmitted through the wedge 16 . The collimator 17 slidably supports a plurality of lead plates that shield X-rays, and adjusts the form of slits formed by the plurality of lead plates. Note that the collimator 17 may also be called an X-ray diaphragm.

The DAS 18 reads from the X-ray detector 12 an electrical signal corresponding to the X-ray dose detected by the X-ray detector 12 . The DAS 18 amplifies the readout electrical signals and integrates (sums) the electrical signals over the view period to collect detection data having digital values corresponding to the x-ray dose over the view period. The detected data are called projection data. The DAS 18 is implemented, for example, by an Application Specific Integrated Circuit (ASIC) incorporating circuit elements capable of generating projection data. Projection data is transmitted to the console 40 via a non-contact data transmission device or the like. Here, the DAS 18 is an example of a detector.

The detection data generated by the DAS 18 is transmitted from a transmitter having a light emitting diode (LED) provided on the rotating frame 13 to a non-rotating portion (for example, a fixed frame) of the pedestal 10 by optical communication. are omitted.) is transmitted to a receiver having a photodiode and transferred to the console 40 . The method of transmitting the detection data from the rotating frame 13 of the rotating portion to the non-rotating portion of the gantry 10 is not limited to the optical communication described above, and any method of non-contact data transfer may be adopted. .

In this embodiment, the X-ray CT apparatus 1 equipped with the integrating X-ray detector 12 will be described as an example. It can also be realized as an X-ray CT apparatus 1.

The bed 30 is a device for placing and moving the subject P to be scanned. The bed 30 has a base 31 , a bed driving device 32 , a top plate 33 and a support frame 34 . The base 31 is a housing that supports the support frame 34 so as to be vertically movable. The bed driving device 32 is a driving mechanism that moves the tabletop 33 on which the subject P is placed in the longitudinal direction of the tabletop 33 . The bed driving device 32 includes a motor, an actuator, and the like. The top plate 33 is a plate on which the subject P is placed. The top plate 33 is provided on the upper surface of the support frame 34 . The top plate 33 can protrude from the bed 30 toward the gantry 10 so that the whole body of the subject P can be imaged. The top plate 33 is made of, for example, carbon fiber reinforced plastic (CFRP) having good X-ray transparency and physical properties such as rigidity and strength. Further, for example, the inside of the top plate 33 is hollow. The support frame 34 supports the top plate 33 so as to be movable in the longitudinal direction of the top plate 33 . Note that the bed driving device 32 may move the support frame 34 in the longitudinal direction of the top plate 33 in addition to the top plate 33 . Further, the bed 30 is equipped with the cleaning mechanism according to the embodiment. Details of the cleaning mechanism will be described later. Here, the bed 30 is an example of a medical bed apparatus.

Console 40 has memory 41 , display 42 , input interface 43 and processing circuitry 44 . Data communication between the memory 41, the display 42, the input interface 43 and the processing circuit 44 is performed via a bus (BUS). Although the console 40 is described as being separate from the gantry 10, the gantry 10 may include the console 40 or a part of each component of the console 40. FIG. Here, the console 40 is an example of a medical bed control device.

The memory 41 is implemented by, for example, a semiconductor memory device such as a ROM, a RAM, a flash memory, a hard disk, an optical disc, or the like. Also, for example, the memory 41 stores various programs. Note that the storage area of the memory 41 may be in the X-ray CT apparatus 1 or in an external storage device connected via a network. Here, the memory 41 is an example of a storage unit.

The display 42 displays various information. For example, the display 42 displays a medical image (CT image) generated by the processing circuit 44, a GUI (Graphical User Interface) for accepting various operations from the operator, and the like. Information displayed on the display 42 includes notification information in bed control according to the embodiment. Various arbitrary displays can be used as the display 42 as appropriate. For example, the display 42 can be a liquid crystal display (LCD), a cathode ray tube (CRT) display, an organic electroluminescence display (OELD), or a plasma display.

Note that the display 42 may be provided anywhere in the control room. Also, the display 42 may be provided on the gantry 10 . In this embodiment, a touch panel display 51 is exemplified as the display 42 (see FIG. 2). The display 42 may be of a desktop type, or may be configured by a tablet terminal or the like capable of wireless communication with the main body of the console 40 . Also, one or more projectors may be used as the display 42 . Here, the display 42 is an example of a display section.

The input interface 43 receives various input operations from the operator, converts the received input operations into electrical signals, and outputs the electrical signals to the processing circuit 44 . For example, the input interface 43 receives from the operator an operation input related to bed control according to the embodiment, such as an operation input instructing to start cleaning the bed 30 .

As the input interface 43, for example, a mouse, keyboard, trackball, switch, button, joystick, touch pad, touch panel display, etc. can be used as appropriate. In this embodiment, a touch panel display 51 is exemplified as the input interface 43 (see FIG. 2). In addition, in the present embodiment, the input interface 43 is not limited to having these physical operation components. For example, the input interface 43 includes an electrical signal processing circuit that receives an electrical signal corresponding to an input operation from an external input device provided separately from the device and outputs the electrical signal to the processing circuit 44. . Also, the input interface 43 may be provided on the gantry 10 and/or the bed 30 . Also, the input interface 43 may be composed of a tablet terminal or the like capable of wireless communication with the main body of the console 40 . Here, the input interface 43 is an example of an input unit.

A processing circuit 44 controls the operation of the entire X-ray CT apparatus 1 . The processing circuit 44 has a processor and memories such as ROM and RAM as hardware resources. The processing circuit 44 executes a system control function 441, an image generation function 442, an image processing function 443, a cleaning control function 444, a display control function 445, and the like by means of a processor that executes programs loaded in memory. Here, the processing circuit 44 is an example of a processing unit.

In the system control function 441 , the processing circuit 44 controls various functions of the processing circuit 44 based on input operations received from the operator via the input interface 43 . For example, the processing circuitry 44 controls the position of the top plate 33 of the bed 30 . Processing circuitry 44 controls CT scans performed on gantry 10 . The processing circuitry 44 also acquires detection data obtained by CT scanning. Note that the processing circuit 44 may acquire detection data regarding the subject P from outside the X-ray CT apparatus 1 .

In the image generation function 442, the processing circuit 44 performs preprocessing such as logarithmic conversion processing, offset correction processing, inter-channel sensitivity correction processing, and beam hardening correction on the detection data output from the DAS 18 to generate data. . Processing circuitry 44 stores the generated data in memory 41 . Data before preprocessing (detection data) and data after preprocessing may be collectively referred to as projection data. The processing circuit 44 performs reconstruction processing using a filtered back projection method, an iterative reconstruction method, machine learning, etc. on the generated projection data (projection data after preprocessing) to obtain CT image data. Generate. The processing circuit 44 stores the generated CT image data in the memory 41 .

In the image processing function 443, the processing circuit 44 converts the CT image data generated by the image generating function 442 into tomographic image data of an arbitrary cross section by a known method based on the input operation received from the operator via the input interface 43. or 3D image data. For example, the processing circuit 44 performs three-dimensional image processing such as volume rendering, surface rendering, image value projection processing, MPR (Multi-Planar Reconstruction) processing, CPR (Curved MPR) processing, etc. on the CT image data, and performs arbitrary Generate rendering image data in the viewing direction. Note that the image generation function 442 may directly generate three-dimensional image data such as rendering image data in an arbitrary viewpoint direction, that is, volume data. The processing circuit 44 stores tomographic image data and three-dimensional image data in the memory 41 .

In the cleaning control function 444, the processing circuit 44 performs cleaning control of the bed 30 according to the embodiment. Specifically, the processing circuit 44 performs bed control to change the relative positions of the table 33 and the support frame 34 in the longitudinal direction of the table 33 when the subject P is not placed on the table 33 . . The processing circuit 44 cleans the support frame 34 by the first cleaning unit 35 (see FIG. 2) fixed to the top plate 33 and the second cleaning unit 37 fixed to the support frame 34 by the bed control. (See FIG. 2) to clean the top plate 33 .

Also, in the cleaning control function 444 , the processing circuit 44 causes the discharge section provided in at least one of the first cleaning unit 35 and the second cleaning unit 37 to discharge the chemical solution for cleaning. More specifically, the processing circuitry 44 causes the top plate 33 to move to one side in the longitudinal direction, and/or to move the top plate 33 to the opposite side in at least one of the following steps: The discharging portion of at least one of the first cleaning unit 35 and the second cleaning unit 37 is caused to discharge the chemical solution for cleaning.

Note that the first movement is a movement that causes the top plate 33 to protrude from the support frame 34 toward the gantry 10 side. In other words, the first movement is movement of the top plate 33 in the outward path for entering the opening 19 of the mount 10 , that is, the rotating frame 13 . The second movement is movement to move the protruding top plate 33 to the side opposite to the gantry 10 . In other words, the second movement is movement of the top plate 33 in the return path for retracting the top plate 33 from the opening 19 of the mount 10 , that is, the rotating frame 13 . Here, the processing circuit 44 that implements the cleaning control function 444 is an example of a control section.

Note that the cleaning of the bed 30 in this embodiment includes disinfection of the bed 30 . In other words, the cleaning chemical liquid ejected from the ejection section according to the present embodiment includes a disinfecting chemical liquid (antiseptic liquid). Here, disinfection means reducing the number of microorganisms, bacteria, or viruses, or detoxifying microorganisms, bacteria, or viruses. In other words, cleaning according to this embodiment includes removing and/or killing at least some of the microorganisms and bacteria. In addition, disinfection according to the present embodiment includes removing and/or inactivating at least part of viruses.

The processing circuit 44 in the display control function 445 causes the display 42 to display an image based on various image data generated by the image processing function 443 . Images to be displayed on the display 42 include CT images based on CT image data, cross-sectional images based on cross-sectional image data of arbitrary cross-sections, rendering images in arbitrary viewpoint directions based on rendering image data in arbitrary viewpoint directions, and the like. Images displayed on the display 42 include images for displaying operation screens and images for displaying notifications and warnings to the operator. Here, the processing circuit 44 that implements the display control function 446 is an example of a display control unit.

Note that image data representing images for displaying the operation screen and images for displaying notifications and warnings to the operator are generated by any one of the image processing function 443, the cleaning control function 444, and the display control function 445. I don't mind if you do.

Note that the functions 441 to 445 are not limited to being realized by a single processing circuit. A plurality of independent processors may be combined to configure the processing circuit 44, and each processor may implement each function 441 to 445 by executing each program. Here, each of the functions 441-445 may be appropriately distributed or integrated in a single or multiple processing circuits and implemented.

Although the console 40 has been described as a single console that executes a plurality of functions, separate consoles may execute a plurality of functions. For example, the functions of the processing circuit 44 such as the image generation function 442, the image processing function 443, and the cleaning control function 444 may be distributed.

Note that part or all of the processing circuit 44 may be included in an integrated server that collectively processes detection data acquired by a plurality of medical image diagnostic apparatuses without being limited to being included in the console 40 . .

At least one of the post-processing, cleaning control processing, and display processing may be performed by either the console 40 or an external workstation. Alternatively, both the console 40 and the work station may be processed at the same time. As the work station, a computer having, as hardware resources, a processor that implements functions corresponding to each process and memories such as ROM and RAM, etc., can be appropriately used.

In reconstructing the X-ray CT image data, either the full-scan reconstruction method or the half-scan reconstruction method may be applied. For example, in the image generation function 442, the processing circuit 44 uses projection data for 360 degrees around the object P in the full scan reconstruction method. In the half-scan reconstruction method, the processing circuit 44 uses projection data for 180 degrees plus the fan angle. For simplicity of explanation, the processing circuit 44 uses a full-scan reconstruction method for reconstruction using projection data for 360 degrees around the subject P. FIG.

It should be noted that the technology according to the present embodiment is also applicable to a single-tube type X-ray computed tomography apparatus, in which a plurality of pairs of X-ray tubes and detectors are mounted on a rotating ring, so-called multi-tube type X-ray It can also be applied to a computer tomography apparatus.

Note that the technique according to the present embodiment can also be applied to the X-ray CT apparatus 1 that is configured to perform imaging using the dual energy method. At this time, the X-ray high-voltage device 14 can alternately switch the energy spectrum of the X-rays emitted from the X-ray tube 11, for example, by high-speed switching between two voltage values. That is, the X-ray CT apparatus 1 is configured to acquire projection data in each acquisition view while modulating the tube voltage at the timing according to the tube voltage modulation control signal. By imaging the subject with different tube voltages, it is possible to improve the contrast of shades in the CT image based on the energy transparency of the substance for each X-ray energy spectrum.

It is assumed that the X-ray CT apparatus 1 according to this embodiment is configured to read electric signals from the X-ray detector 12 by a sequential reading method.

The X-ray CT apparatus 1 according to this embodiment may be configured as a mobile CT in which the gantry 10 and the bed 30 are movable.

Note that the bed control according to the embodiment is realized, for example, by the console 40 of the X-ray CT apparatus 1, but may be realized by the control device 15, or by a computer mounted on the gantry 10 or the bed 30. I don't mind.

Here, the cleaning mechanism mounted on the bed 30 as the medical bed apparatus according to the embodiment will be described with reference to the drawings. FIG. 2 is a diagram schematically showing an example of the configuration of the bed 30 according to this embodiment. 3 and 4 are diagrams schematically showing an example of the configuration of the cleaning mechanism mounted on the bed 30 according to this embodiment.

As described above, the bed 30 has the top plate 33 on which the subject P is placed during examination, and the support frame 34 that supports the top plate 33 so as to be movable in the longitudinal direction of the top plate 33 . As shown in FIGS. 2 to 4, the bed 30 has a first cleaning unit 35 and a second cleaning unit 37 as cleaning mechanisms.

The first cleaning unit 35 is fixed on the side of the top plate 33 in the longitudinal direction opposite to the pedestal 10 (the Z-direction in FIGS. 3 and 4). The first cleaning unit 35 is configured to be able to clean both the upper surface and both side surfaces of the support frame 34 .

The second cleaning unit 37 is fixed to the pedestal 10 side in the longitudinal direction of the top plate 33 of the support frame 34 (Z+ direction in FIGS. 3 and 4). The second cleaning unit 37 is configured to be able to clean the top surface of the top plate 33 .

Specifically, the first cleaning unit 35 has a first top cleaning section 351 and a first side cleaning section 352 . The first upper surface cleaning unit 351 is provided at a position facing the upper surface of the support frame 34 . The first side surface cleaners 352 are provided at respective positions facing both side surfaces of the support frame 34 .

The second cleaning unit 37 also has a second top surface cleaning section 371 . The second upper surface cleaning unit 371 is provided at a position facing the upper surface of the top plate 33 .

On the side of the first upper surface cleaning section 351 facing the upper surface of the support frame 34 , a mop arranged so as to be in contact with the upper surface of the support frame 34 is detachably attached, for example. That is, a mop capable of wiping the upper surface of the support frame 34 is provided on the side of the first upper surface cleaning section 351 facing the upper surface of the support frame 34 .

Similarly, on each side of the first side surface cleaning section 352 facing the side surface of the support frame 34 , a mop arranged so as to be in contact with the side surface of the support frame 34 is detachably attached, for example. That is, a mop capable of wiping the side surface of the support frame 34 is provided on the side of the first side surface cleaning section 352 facing the side surface of the support frame 34 .

In addition, a mop disposed so as to be in contact with the upper surface of the top plate 33 is detachably attached, for example, to the side of the second upper surface cleaning unit 371 facing the upper surface of the top plate 33 . That is, a mop capable of wiping the top surface of the top plate 33 is provided on the side of the second top surface cleaning unit 371 facing the top surface of the top plate 33 .

In addition, the first upper surface cleaning part 351 and the first side surface cleaning part 352 may be formed integrally with the mop. In this case, the first upper surface cleaning section 351 and the first side surface cleaning section 352 may be detachably attached to the first cleaning unit 35, respectively.

Similarly, the second top cleaning part 371 may be formed integrally with the mop. In this case, the second top surface cleaning section 371 may be detachably attached to the second cleaning unit 37 .

Each mop is made of cloth, for example, but may be made of another material.

In addition, the side of the first upper surface cleaning unit 351 facing the upper surface of the support frame 34 is provided with a discharge unit that discharges a cleaning chemical toward a position facing the upper surface of the support frame 34 . Similarly, each of the sides of the first side surface cleaning section 352 facing the side surface of the support frame 34 is provided with a discharge section that discharges the cleaning liquid toward the facing position on the side surface of the support frame 34 . ing.

In addition, on the side of the second top surface cleaning unit 371 facing the top surface of the top plate 33 , a discharge unit is provided that discharges cleaning chemicals toward a position facing the top surface of the top plate 33 .

Each ejection part is configured to eject, for example, mist-like cleaning chemical liquid toward the position facing each other, that is, spray it.

FIG. 3 illustrates a state before the top plate 33 protrudes from the support frame 34 toward the gantry 10 side. 4 illustrates a state in which the top plate 33 protrudes from the support frame 34 toward the gantry 10 side. Since the first cleaning unit 35 is fixed to the top plate 33, the top plate 33 moves relative to the support frame 34 as shown in FIGS. . On the other hand, since the second cleaning unit 37 is fixed to the support frame 34, the top plate 33 moves relative to the support frame 34 as shown in FIGS. is changed relative to

Therefore, by changing the relative position of the top plate 33 with respect to the support frame 34 , the first cleaning unit 35 sprays the chemical solution for cleaning onto the upper surface and both side surfaces of the support frame 34 , while simultaneously spraying the mop. can be wiped off with Similarly, by changing the relative position of the top plate 33 with respect to the support frame 34, the second cleaning unit 37 wipes the top surface of the top plate 33 with a mop while spraying the cleaning chemical solution. It can be carried out.

The X-ray CT apparatus 1 according to the embodiment also has a plurality of touch panel displays 51 as the display 42 and/or the input interface 43 . Each of the plurality of touch panel displays 51 as the input interface 43 receives an operator's operation input related to medical image diagnosis, such as an operation input related to movement of the tabletop 33 on which the subject P is placed. Further, each of the plurality of operation panels 50 as the display 42 displays notification information related to cleaning of the bed 30 and the like.

FIG. 2 illustrates two touch panel displays 51 as an example. In the example shown in FIG. 2, the two touch panel displays 51 are provided on the left and right sides of the gantry 10 on the side of the bed 30 (hereinafter referred to as the front side of the gantry 10).

Note that the plurality of touch panel displays 51 may be three or more. At least one touch panel display 51 of the plurality of touch panel displays 51 may be configured as a portable operation panel that is moved by the operator. As the portable operation panel, various types of portable terminals that can be connected to the hospital network, such as tablet computers and smartphones, can be used as appropriate.

Also, the X-ray CT apparatus 1 according to the embodiment has an optical camera 55 . The optical camera 55 is configured to photograph at least the bed 30 . The optical camera 55 may be configured to be able to photograph the entire examination room or the entrance/exit where the X-ray CT apparatus 1 is arranged. A photographed image obtained by the optical camera 55 is used, for example, when detecting whether or not the subject P has touched the top plate 33 of the bed 30 or the support frame 34 .

Here, a method for controlling the bed 30 according to the embodiment will be described in more detail with reference to the drawings. FIG. 5 is a flowchart showing an example of control processing of the bed 30 according to the first embodiment. The flow of FIG. 5 is started, for example, before the subject P is imaged by the X-ray CT apparatus 1 and before the subject P enters the room.

In the cleaning control function 444, the processing circuit 44 acquires a photographed image from the optical camera 55 (S101). Further, the processing circuit 44 determines whether or not the subject P has touched the bed 30 based on the captured image from the optical camera 55 (S102).

When it is determined that the subject P has not touched the bed 30 (S102: No), the flow of FIG. 5 returns to the process of S101.

On the other hand, when it is determined that the subject P has touched the bed 30 (S102: Yes), the processing circuit 44 in the cleaning control function 444 determines whether or not the subject P has left the room (S103). As an example, the processing circuit 44 determines whether the subject P has left the room based on the captured image from the optical camera 55 . As an example, the processing circuit 44 determines whether the subject P has left the room based on the output from the input interface 43 according to the user's operation. For example, a user such as a technician inputs through the input interface 43 that the subject has left the room.

When it is determined that the subject P has not left the room (S103: No), the flow of FIG. 5 returns to the process of S101.

On the other hand, when it is determined that the subject P has left the room (S103: Yes), the processing circuit 44 in the display control function 445 displays a cleaning start confirmation message on the display 42 (S104). Note that the confirmation message for starting cleaning may be output as voice from a speaker.

After that, in the cleaning control function 444, the processing circuit 44 determines whether or not there is an instruction to start cleaning, ie, a cleaning instruction (S105). As an example, the processing circuit 44 determines whether or not there is an instruction to start cleaning based on the output from the input interface 43 according to the user's operation. For example, a user such as a technician instructs to start cleaning through the input interface 43 in response to the confirmation message for starting cleaning. Note that the processing circuit 44 may determine that an instruction to start cleaning has been given in response to the user inputting that the subject P has left the room in step S103.

When it is not determined that there is an instruction to start cleaning (S105: No), the processing circuit 44 in the cleaning control function 444 determines whether or not cleaning is unnecessary (S106). As an example, the processing circuit 44 determines that the cleaning is not required based on the output from the input interface 43 in response to the user's operation instructing that cleaning is not required. As an example, the processing circuit 44 may perform cleaning when a scan regarding the same subject P is not completed, i.e., when there is a subsequent scan regarding the same subject P, such as when the subject P has temporarily left the room. It is determined that the situation is unnecessary.

When the situation does not require cleaning (S106: No), the flow of FIG. 5 returns to the process of S104. On the other hand, when the cleaning is unnecessary (S106: Yes), the flow of FIG. 5 returns to the process of S101.

On the other hand, when it is determined that there has been an instruction to start cleaning (S105: Yes), the processing circuit 44 in the cleaning control function 444 performs cleaning to clean the bed 30 while changing the relative positions of the top plate 33 and the support frame 34. Processing is executed (S107). Further, in the display control function 445, the processing circuit 44 displays a cleaning completion notification message on the display 42 when the cleaning is completed (S108). Note that the cleaning completion notification message may be output as voice from a speaker. After that, the process of FIG. 5 ends.

In this embodiment, the case where the confirmation message for starting cleaning is displayed on the display 42 when the subject P is detected by the optical camera 55 has been exemplified, but the present invention is not limited to this. For example, there may be a mode in which the confirmation message is displayed between examinations on different subjects P, or when the X-ray CT apparatus 1 is started or the operation is finished. In this case, the optical camera 55 may not be provided.

Further, in the present embodiment, the case where cleaning is started in response to a user's cleaning instruction has been exemplified, but the present invention is not limited to this. For example, there may be a mode in which it is executed as a series of flows together with a startup or shutdown routine, such as at startup or at the end of operation.

Thus, the bed 30 according to the present embodiment is fixed to the top plate 33 on the opposite side of the pedestal 10, and is configured to clean the upper surface and both side surfaces of the support frame 34, respectively. , and a second cleaning unit 37 fixed to the support frame 34 on the side of the pedestal 10 and capable of cleaning the upper surface of the top plate 33 . In addition, in the cleaning control function 444 according to the present embodiment, the processing circuit 44 controls the relative positions of the top plate 33 and the support frame 34 in the longitudinal direction of the top plate 33 when the subject P is not placed on the top plate 33 . are changed, the support frame 34 is cleaned by the first cleaning unit 35 and the top plate 33 is cleaned by the second cleaning unit 37 .

According to this configuration, the automatic cleaning of the bed 30 eliminates the need for manual cleaning and disinfection by a user such as a technician. In addition, it is possible to reduce the possibility of omission of cleaning due to manual cleaning and disinfection, and reduce the risk of infection spreading when the next patient uses the bed 30 with viruses and bacteria adhering to the bed 30. Therefore, according to the bed 30 of this embodiment, the risk of infection through the bed 30 can be reduced.

(Second embodiment)
Note that other configurations can also be used as the cleaning mechanism. 6 and 7 are diagrams schematically showing an example of the configuration of the cleaning mechanism mounted on the bed 30 according to this embodiment.

The second cleaning unit 37 has a connecting portion 373 fixed to the side surface of the support frame 34, as shown in FIGS. The connecting portion 373 rotatably connects the side portion of the second cleaning unit 37 and the side portion of the support frame 34 . That is, the second cleaning unit 37 is configured to be rotatable about the connecting portion 373 between a first position for cleaning shown in FIG. 6 and a second position for inspection shown in FIG. ing. Here, the side portion of the second cleaning unit 37 is a member that supports the second top surface cleaning portion 371, and is a member on which the second side surface cleaning portion 372 may be provided in the embodiments described later. Note that the side surface portion of the second cleaning unit 37 according to this embodiment can be formed integrally with the second top surface cleaning portion 371 .

More specifically, when the second cleaning unit 37 is in the first cleaning position, the top plate 33 passes below the second top surface cleaning section 371 of the second cleaning unit 37 . On the other hand, when the second cleaning unit 37 is in the second position during inspection, the top plate 33 passes above the second cleaning unit 37 .

It should be noted that the second cleaning unit 37 may be manually rotatable or may be rotated under control by the processing circuitry 44 in the cleaning control function 444 .

Thus, in the bed 30 according to this embodiment, the second cleaning unit 37 is configured to be housed in the bed 30 . According to this configuration, it is possible to prevent the second cleaning unit 37 from interfering with photographing. In addition, since the subject P does not touch the second cleaning unit 37 by housing the second cleaning unit 37 during examination, the second cleaning unit 37 itself can be made unnecessary for disinfection.

(Third embodiment)
Note that the second cleaning unit 37 may be configured to be able to further clean both side surfaces of the top plate 33 . FIG. 8 is a diagram schematically showing an example of the configuration of the cleaning mechanism mounted on the bed 30 according to this embodiment.

The second cleaning unit 37 further has a second side cleaning portion 372 . The second side surface cleaning units 372 are provided at respective positions facing both side surfaces of the top plate 33 . The second cleaning unit 37 is fixed to the projecting portion 341 of the support frame 34 on the side of the pedestal 10 in the longitudinal direction of the top plate 33 of the support frame 34 (Z+ direction in FIGS. 3 and 4). The projecting portion 341 of the support frame 34 is a beam-shaped portion projecting from the support frame 34 toward the pedestal 10 below the top plate 33 .

On each side of the second side surface cleaning section 372 facing the side surface of the top plate 33 , a mop arranged so as to be in contact with the side surface of the top plate 33 is detachably attached, for example. That is, a mop capable of wiping the side surface of the top plate 33 is provided on the side of the second side surface cleaning section 372 facing the side surface of the top plate 33 .

The second side cleaning part 372 may be formed integrally with the mop. In this case, the second side surface cleaning section 372 may be detachably attached to the second cleaning unit 37 .

In addition, each of the sides of the second side surface cleaning portion 372 facing the side surface of the top plate 33 is provided with a discharge portion for discharging the cleaning chemical liquid toward the facing position on the side surface of the top plate 33 . there is

Thus, in the bed 30 according to this embodiment, the second cleaning unit 37 is configured to be able to further clean both side surfaces of the top plate 33 . According to this configuration, it is possible to further clean both side surfaces of the top plate 33 that may be touched by the subject P, thereby further reducing the risk of infection through the bed 30 .

(Fourth embodiment)
In the bed 30 according to each of the above-described embodiments, the discharge of the cleaning chemical liquid is carried out in one of the outward path for extending the top plate 33 toward the pedestal 10 side and the return path for returning the top plate 33 to the opposite side of the pedestal 10. does not have to be done in

As an example, there may be cleaning in which a chemical solution for cleaning is discharged in one of the outward and return passes, and only wiping with a mop is performed in the other.

According to this configuration, excessive cleaning can be suppressed, and the time and cost involved in cleaning can be reduced.

(Fifth embodiment)
In addition, in the bed 30 according to each of the embodiments described above, at least one of the first cleaning unit 35 and the second cleaning unit 37 may not be provided with a mop. Alternatively, in the first cleaning unit 35, at least one of the first top cleaning section 351 and the first side cleaning section 352 may not be provided with a mop. Alternatively, in the second cleaning unit 37, at least one of the second upper surface cleaning section 371 and the second side surface cleaning section 372 may not be provided with a mop.

In this way, each cleaning unit or each cleaning section can be configured to only spray the chemical solution for cleaning. Thereby, the configuration of the cleaning mechanism can be simplified. Moreover, mop exchange can be made unnecessary.

(Sixth embodiment)
In addition, in the bed 30 according to each of the embodiments described above, at least one of the first cleaning unit 35 and the second cleaning unit 37 may not be provided with a discharge section. Alternatively, in the first cleaning unit 35, at least one of the first upper surface cleaning section 351 and the first side surface cleaning section 352 may not be provided with a discharge section. Alternatively, in the second cleaning unit 37, at least one of the second top surface cleaning section 371 and the second side surface cleaning section 372 may not be provided with a discharge section.

In this way, each cleaning unit or each cleaning section can be configured to only wipe off with a mop. Thereby, the configuration of the cleaning mechanism can be simplified. Moreover, it is possible to reduce costs related to the management and use of cleaning chemicals.

(Seventh embodiment)
In addition, in the bed 30 according to each of the embodiments described above, at least one of the first cleaning unit 35 and the second cleaning unit 37 may be detachable. For example, the first cleaning unit 35 may be detachably fixed to the top plate 33 . For example, the second cleaning unit 37 may be detachably secured to the support frame 34 .

In this way, when each cleaning unit is configured to be detachable, each cleaning unit can be removed at the time of inspection, so that each cleaning unit can be prevented from interfering with imaging.

(Eighth embodiment)
In addition, in the bed 30 according to each of the above-described embodiments, the support frame 34 extends in the longitudinal direction (Z direction) of the top plate 33, in the lateral direction (X direction) orthogonal to the longitudinal direction, and in the longitudinal direction and the lateral direction. The top plate 33 may be configured to be movable at least in the longitudinal direction of the top plate 33 out of the vertical direction (Y direction) perpendicular to the vertical direction. For example, the base 31 of the bed 30 may support the support frame 34 movably at least in the longitudinal direction of the top plate 33 . That is, the bed drive device 32 may move the support frame 34 in the longitudinal direction of the top plate 33 in addition to the top plate 33 .

Thus, the techniques according to the above-described embodiments are applicable even when the support frame 34 is movable.

(Ninth embodiment)
In addition, in the bed 30 according to the eighth embodiment, the cleaning mechanism may adopt other configurations in addition to or instead of spraying the chemical solution for cleaning or wiping with a mop.

As an example, the second cleaning unit 37 is provided with an ultraviolet ray source (irradiating section) for irradiating ultraviolet rays on the side opposite to the top plate 33 . UV rays are preferably deep UV rays. For example, an LED can be used as the ultraviolet light source, but other light sources may also be used.

For example, in the cleaning control function 444, the processing circuit 44 moves the support frame 34 at least in the longitudinal direction of the top plate 33 when irradiating ultraviolet rays from the irradiation unit. The processing circuit 44 may move the support frame 34 in the left-right direction and the up-down direction perpendicular to the longitudinal direction of the top plate 33 . In this manner, the processing circuit 44 causes the second cleaning unit 37, that is, the irradiation section, and the opening 19 of the rotating frame 13 of the gantry 10 to approach each other when the irradiation section emits ultraviolet rays. According to this configuration, the inner wall of the cradle 10 can be further disinfected.

(Tenth embodiment)
In the bed 30 according to each of the above-described embodiments, the ejection section provided in at least one of the first cleaning unit 35 and the second cleaning unit 37 is configured to eject the cleaning chemical liquid toward the opposing position. However, the mop may be configured to discharge a chemical solution for cleaning. As a result, it is possible to prevent the ejected cleaning chemical from adhering outside the wiping range.

The term "processor" used in the above description means circuits such as a CPU, a GPU (Graphics Processing Unit), an ASIC, a programmable logic device (PLD), and the like. PLDs include Simple Programmable Logic Devices (SPLDs), Complex Programmable Logic Devices (CPLDs), and Field Programmable Gate Arrays (FPGAs). The processor realizes its functions by reading and executing the programs stored in the memory circuit. The memory circuit storing the program is a computer-readable non-temporary recording medium. It should be noted that instead of storing the program in the memory circuit, the program may be directly installed in the circuit of the processor. In this case, the processor realizes its function by reading and executing the program embedded in the circuit. Also, functions corresponding to the program may be realized by combining logic circuits instead of executing the program. Note that each processor of the present embodiment is not limited to being configured as a single circuit for each processor, and may be configured as one processor by combining a plurality of independent circuits to realize its function. good. Furthermore, a plurality of components in FIG. 1 may be integrated into one processor to realize its functions.

According to at least one embodiment described above, it is possible to reduce the risk of infection through the medical bed apparatus.

While several embodiments of the invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

1 X-ray CT device (medical diagnostic imaging device)
REFERENCE SIGNS LIST 10 gantry 11 X-ray tube 12 X-ray detector 13 rotating frame 14 X-ray high voltage device 15 controller (control unit)
16 wedge 17 collimator 18 data acquisition circuit 19 opening 30 bed (medical bed device)
31 base 32 bed driving device 33 top plate 34 support frame 35 first cleaning unit 37 second cleaning unit 40 console 41 memory 42 display 43 input interface (input unit)
44 processing circuit 441 system control function 442 image generation function 443 image processing function 444 cleaning control function (control unit)
445 Display control function 51 Touch panel display (input unit)
55 optical camera

Claims (16)

a top plate on which the subject is placed during inspection;
a support frame that supports the top plate movably in the longitudinal direction of the top plate;
a first cleaning unit fixed to the side of the top plate opposite to the pedestal in the longitudinal direction and configured to be able to clean the upper surface and both side surfaces of the support frame;
a second cleaning unit fixed to the gantry side of the support frame in the longitudinal direction and configured to be able to clean the upper surface of the top plate;
cleaning the support frame by the first cleaning unit by changing relative positions of the top plate and the support frame in the longitudinal direction when the subject is not placed on the top plate; A medical bed apparatus comprising: a control section that cleans the top plate by the second cleaning unit. 2. The medical bed apparatus according to claim 1, wherein said first cleaning unit and said second cleaning unit each have mops capable of wiping opposing positions. 3. The medical bed apparatus according to claim 1, wherein said first cleaning unit and said second cleaning unit each have a discharge part for discharging a cleaning chemical solution toward positions facing each other. 2. The method according to claim 1, wherein the first cleaning unit and the second cleaning unit each have a mop capable of wiping a position facing each other, and a discharge section for discharging a cleaning chemical to the mop. Medical bed equipment. The control unit performs a first movement to project the top plate from the support frame toward the mount in the longitudinal direction, and a second movement to move the projected top plate to a side opposite to the mount. 5. The bed apparatus for medical use according to claim 3 or 4, wherein at least one of the ejection parts is caused to eject the cleaning chemical liquid. The control section causes the discharge section to project the cleaning chemical liquid in one of the first movement and the second movement, and then prevents the discharge section from discharging the cleaning chemical liquid in the other movement. 6. A medical couch apparatus according to claim 5. The second cleaning unit is fixed to a protruding portion that protrudes toward the base in the longitudinal direction of the support frame below the top plate, and is configured to be able to further clean both side surfaces of the top plate. A medical couch apparatus according to any one of claims 1 to 6. the second cleaning unit has a connection portion fixed to a side surface of the support frame, and is configured to be rotatable between a first position and a second position about the connection portion;
The top plate passes below the second cleaning unit when the second cleaning unit is in the first position when the relative positions of the top plate and the support frame in the longitudinal direction are changed. and passes above the second cleaning unit when the second cleaning unit is in the second position;
A medical couch apparatus according to any one of claims 1 to 7. 9. A medical couch apparatus according to any one of claims 1 to 8, wherein the second cleaning unit is detachably fixed to the support frame. The medical bed apparatus according to any one of claims 1 to 9, wherein said first cleaning unit is detachably fixed to said top plate. The medical couch apparatus according to any one of claims 1 to 10, further comprising a base supporting said support frame movably at least in said longitudinal direction. The second cleaning unit further has an irradiation section that irradiates deep ultraviolet rays on the side opposite to the top plate,
When the deep ultraviolet rays are emitted from the irradiation unit, the control unit moves the support frame at least in the longitudinal direction to bring the second cleaning unit closer to the pedestal.
12. A medical couch apparatus according to claim 11. further comprising an input unit for receiving user operation input,
The control unit changes the relative positions of the top plate and the support frame in the longitudinal direction when a cleaning instruction is received by the input unit.
13. A medical couch apparatus according to any one of claims 1-12. Equipped with an optical camera,
The control unit acquires an image obtained by the optical camera, and when detecting that the subject touches the top plate or the support frame based on the image, the top plate and the support frame are detected. changing the relative position in the longitudinal direction of
14. A medical couch apparatus according to any one of claims 1-13. a pedestal for CT imaging with X-rays;
a top plate on which the subject is placed during inspection;
a support frame that supports the top plate movably in the longitudinal direction of the top plate;
a first cleaning unit fixed to the side of the top plate opposite to the pedestal in the longitudinal direction and configured to be able to clean the upper surface and both side surfaces of the support frame;
a second cleaning unit fixed to the gantry side of the support frame in the longitudinal direction and configured to be able to clean the upper surface of the top plate;
cleaning the support frame by the first cleaning unit by changing relative positions of the top plate and the support frame in the longitudinal direction when the subject is not placed on the top plate; and a controller that cleans the top plate by the second cleaning unit. a top plate on which a subject is placed; a support frame that supports the top plate movably in the longitudinal direction of the top plate; A first cleaning unit configured to be able to clean the upper surface and both side surfaces of the frame, and a second cleaning unit fixed to the support frame in the longitudinal direction and configured to be able to clean the upper surface of the top plate. A medical bed apparatus comprising a cleaning unit,
cleaning the support frame with the first cleaning unit and cleaning the top plate with the second cleaning unit by changing relative positions of the top plate and the support frame in the longitudinal direction. A control method for a medical couch apparatus.

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