JPH0268042A - Table device for medical equipment - Google Patents

Abstract

PURPOSE:To easily make the object part of a body to be checked coincident exactly with the height or horizontal position of each iso-center in plural equipments by operat ing x-DELTAx or x+DELTAx from a signal (x) detected by a position detecting means and shift quantity DELTAx stored in advance in a arithmetic control part. CONSTITUTION:The switch of an input part 13 is changed over from a CT mode to an X-ray simulator mode. The input pat 13 outputs a signal to finish a CT part device 3 and to designate an X-ray simulator device 4 scheduled to be next used to an arithmetic control part 14. The arithmetic control part 14 operates x4=x3+DELTAx as a target value from a signal x3 detected by a position detecting part 16 to show the height of ceiling board 10 at the time of switching and a DELTAx stored in a storing part 11 according to the input of the designating signal. Further, the arithmetic control part 14 compares a signal (x) detected by the position detecting part 16 to express the present height of the ceiling board 11 with the target value x4 and moves a driving and operating part 15 so that both (x) and x4 can be equal. Then, the ceiling board 10 is lifted. When both (x) and x4 are equal, the motion of the driving and operating part 15 is stopped and the lifting of the ceiling board 1 is stopped. Then, the position of the ceiling board 10 is held.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is for placing a subject in common with multiple medical devices such as a CT device and an X-ray simulator. The present invention relates to a table device for a medical device that positions a target part of a subject at a predetermined position.

(Prior art) Conventionally, a CT device that creates tomographic images used for diagnosis, etc. and an X-ray simulator device used for radiation therapy and its positioning are installed adjacently, and different objects are placed on the same table device. Various types of treatments are commonly used. FIG. 3 shows a conventional table device for medical equipment used in such cases.

6 is a table device, 3 is a CT device, and 4 is an X-ray simulator device. The CT device 3 and the X-ray simulator device 4 are installed facing each other with a table device 6 in between. The table device 6 is installed on the floor via a rotating mechanism about an axis A so that its direction can be changed within a horizontal plane.

10 is a top plate of the table device 6, on which the subject 2 is placed. The table device 6 includes a drive/operation unit for changing the height of the top plate 10, a drive/operation unit for changing the horizontal position,
It also has one position adjustment button for moving these drive/operation parts.

A position adjustment button 19 for adjusting the position of the top plate 10 is also provided at a position above the center of the CT apparatus 3. C
In addition to the position adjustment button 19, an emergency stop button, an alignment light button, etc. are provided in the upper half of the T device 3 from the center thereof. Medical equipment such as the CT device 3 and the X-ray simulator device 4 have a center of the area to be scanned or seen, and these points C, C4 are respectively called isocenters. Normally, the isocenter C1 of the CT device 3 is the center of the area to be scanned or seen. Since the isocenter C2 is lower than the isocenter C2 of the line simulator device 4, the CT device 3 is placed on the -F of the stand 5 so that the heights of the isocenters C, C, and C are the same.

Next, a control operation when switching the table device 6 from the position of the CT device 3 to the position of the X-ray simulator device 4 will be explained.

The table device 6 is rotated around the axis A and placed in a use position (indicated by a solid line) with respect to the CT device 3. Place the subject 2 on the top plate 10 of the table device 6, and press the alignment light button of the CT device 3 so that the target part of the subject 2 is located at the isocenter 〇 of the CT device 3 on the table 5. While referring to the alignment light, one position adjustment button on the table device 6 is operated to adjust the height and horizontal position of the top plate 10. The height of the top plate 10 at this time varies depending on the size of the subject 2 and the like. After finishing the diagnosis in the CT device 3, in order to perform fluoroscopy in the X-ray simulator device 4, operate the position adjustment button 19 to move the top plate 1.
0 is returned to the center of the table device 6, and the table device 6 is rotated around the axis A and placed in the use position (indicated by a broken line) with respect to the X-ray simulator device 4. And the top plate 10
The horizontal position of the X-ray simulator 4 is adjusted again, and fluoroscopy is performed using the X-ray simulator device 4. Since the heights of the isocenters C3, C, of the two devices are aligned by the stand 5, the positions need only be adjusted in the horizontal direction. On the other hand, the same applies when switching from the position of the X-ray simulator device 4 to the position of the CT device 3.

(Problem to be solved by the invention) However, in the conventional table device of medical equipment, C.
Since the T device 3 is arranged on the stand 5 for positioning, the position adjustment button and various buttons are located high, resulting in poor operability. In order to further correct the slight deviation in the heights of the isocenters Cs and C4, there was also the problem that the height of the table 5 had to be changed.

The present invention has been made in view of the above, and its purpose is to precisely position the target area of the subject at the height and horizontal position of the isocenter of each of multiple devices without reducing the operability of the devices. Moreover, it is an object of the present invention to realize a table device for medical equipment that can be easily matched.

(Means for Solving the Problem) A medical device table device that achieves the above purpose is placed near a plurality of medical devices installed while maintaining a predetermined positional relationship, and is shared by each medical device. This device is for placing a patient under test, and the top plate is moved vertically, horizontally, etc. based on a signal that specifies the next medical device to be used from the used medical device, and the target part of the patient is used. In a table device for a medical device to be installed at the isocenter of a planned medical device, a position detection means for detecting the position of the top plate and outputting a signal X, a drive/operation unit for moving and holding the position of the top plate,
means for storing in advance a shift amount ΔX corresponding to the difference in the isocenter position of each medical device used and scheduled to be used;
A calculation/control unit that calculates X-ΔX or x+Δx based on the specified signal, performs a control calculation using the calculation result as a target value, and outputs a control signal to the drive/operation unit. It has become.

(Operation) Based on the signal specifying the next medical device to be used from the used medical device, the arithmetic/control unit calculates the following from the signal X detected by the position detection means and the pre-stored shift amount ΔX. Calculate X-ΔX or x+Δx. Then, a control signal is output to the drive/operation unit so that the signal X from the detection means is equal to the target value that is the calculation result, and the top plate is moved and held to control its position.

(Example) Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a configuration diagram showing an embodiment according to the present invention. In the figures, the same symbols as in FIG. 3 indicate the same meanings. Reference numeral 1 denotes a table device installed between CTTiB3 X-ray simulators 4 that are placed facing each other, and the height and horizontal position of the top plate 10 can be adjusted as in the conventional example. CTTiB
3 is installed directly on the floor, therefore, the CTTiB3 isocenter C1 is the isocenter C of the X-ray simulator 4.
It is located at a lower position than 4. ΔX is the difference obtained by subtracting the height of the CTTiB3 isocenter C1 from the height of the isocenter C2 of the X-ray simulator device 4. x3 is CTT
This is the height of the top plate 10 when the target region of the subject 2 is aligned with the height of the iB3 isocenter C1. X is the same as the height of the isocenter 04 of the X-ray simulator 4.
This is the height of the top plate 10 when the target parts are combined.

The height X 1 + X 4 of these top plates 10 is
It depends on the size of the body and the location of the target area.

Fig. 2 is a block diagram showing the control system of the table device. In Fig. 1, 13 indicates the table device 1 in CT mode,
This is an input unit equipped with a switch for switching to a simulator mode, and the operation of the switch generates a signal specifying the CTTiB 3 to the X-ray simulator 4 or vice versa. Reference numeral 16 denotes a position detection section composed of a potentiometer that detects the height of the top plate 10 and outputs a signal X.

Reference numeral 15 denotes a driving/operating unit composed of a motor driver, a motor, a hydraulic pump, a hydraulic jack, etc., which changes the height of the top plate 10 or maintains the height. Reference numeral 11 denotes a storage unit that stores in advance a value corresponding to the difference ΔX between the heights of the isocenters C3 and C4 of the CTTiB 3 and the X-ray simulator 4 as a shift amount. 14 is an arithmetic/control unit consisting of a microprocessor, and based on the specified signal from the input unit 13,
, performs a control calculation using the calculation result as a target value, and outputs a control signal to the drive/operation section 15. 17
18 is a D/A converter that converts the digital signal output from the calculation/control unit 14 into an analog signal, and 18 is a converter A that converts the analog signal from the position detection unit 16 into a digital signal.
/D converter. 19 is a position adjustment button for adjusting the height and horizontal position of the top plate 10 of the table device 1. The 0 position adjustment button 19 is attached not only to the main body of the table device 1 but also to the main body of CTTiB2 in parallel. It can be operated equally from either side.

Next, regarding the position control operation in the above configuration, CTT
A case of switching from iB3 to X-ray simulator device 4 will be described.

The table device 1 is installed at the use position (indicated by a solid line) with respect to the CTTiB 3 as in the conventional example. The switch of the input unit 13 is set to the CT mode, and the position of the top plate 10 is adjusted by operating the position adjustment button 19 as in the conventional example.
The target region of the subject 2 is made to coincide with the isocenter Ci. At this time, the height of the top plate 10 is xs, but this is not constant depending on the size of the subject 2 and the position of the target region. CT
After the inspection in TiB3 is finished, as in the conventional example,
The table device 1 is installed at a use position (indicated by a broken line) with respect to the X-ray simulator device 4. The switch of the input section 13 is changed from CT mode to X-ray simulator mode.

The input unit 13 outputs a signal specifying the X-ray simulator device 4 to be used next after completing the CTTiB3 to the calculation/control unit 14.

By inputting the specified signal, the calculation/control unit 14 receives a signal x3 representing the height of the top plate 10 at the time of switching detected by the position detection unit 16 and ΔX recorded/hidden in the storage unit 11.
From this, X a −X3 ΔX is calculated as the target value. Furthermore, the calculation/control unit 14 compares the signal X representing the current height of the top plate 10 detected by the position detection unit 16 with the target value X, and controls the drive/operation unit 15 so that the two become equal. Move the top plate 10 to raise it. Then, when the two become equal, the movement of the drive/operation section 15 is stopped, the lifting of the top plate 10 is stopped, and the position is maintained. Note that during the control calculation by switching the input unit 13, the calculation/control unit does not receive the signal from the position adjustment button 19. By switching from the CT mode to the X-ray simulator mode in this way, the top plate 10 , the height X when the CT apparatus 3 is used increases by ΔX regardless of the height, and the target region can be easily and accurately matched to the height of the isocenter 04 of the X-ray simulator 4.

On the other hand, the same applies when switching from the X-ray simulator device 4 to the CT device 3. In this case, the assignment signal specifies the CT apparatus 3 after finishing the X-ray simulator 4, and the calculation is not X+ΔX but x−ΔX. As a result, the top plate 10 moves down by Δ: The present embodiment is not limited to this example.Although the present embodiment shows alignment in the height direction, the alignment can be performed in the same way in the horizontal direction.

In this case, the shift amount stored in the storage section is
The difference between the distance from the usage position of the table device 1 to the isocenter 01 of the C′F device 3 and the distance from the usage position to the X-ray simulator device 4 at its isocenter cat, and position detection is performed in the horizontal direction, The horizontal drive/control section may be operated by the calculation/control section. Furthermore, there are 3 medical devices that share a table device.
There may be more than one. Various other modifications are possible within the scope of the claims.

(Effects of the Invention) As explained above, the table device for medical equipment of the present invention includes a position detection means for detecting the position X of the top plate, a drive/operation unit for moving and holding the position of the top plate, and a shift Means for storing the amount ΔX in advance, and a calculation/control for performing a predetermined calculation from X and ΔX based on a signal specifying the medical device, and performing a control calculation using the calculation result as a target value to drive the drive/operation unit. It is structured with a section. Therefore, by specifying a medical device, the top plate can be moved by a predetermined amount.

Therefore, the height and/or horizontal position of the target region of the subject can be easily and accurately matched with the isocenter of a plurality of devices without impairing the operability of the devices.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a block diagram showing a control system of the present invention, and FIG. 3 is an explanatory diagram showing a conventional example. DESCRIPTION OF SYMBOLS 1...Table device, 10...Top plate, 11...Storage part, 13...Input part, 14...Calculation/control part, 1
5... Drive/operation section, 16... Position detection section, 17.
...D/A converter, 18...A/D converter, one...
・Position adjustment button, 2... Subject, 3... CT device, 4... X-ray simulator device, 5... Unit, 6...
・Table device.

Claims (2)

[Claims] (1) A medical device table device for placing a subject that is installed in the vicinity of multiple medical devices that are installed while maintaining a predetermined positional relationship and is shared by each medical device, and is a used medical device. A medical device table device that moves the top plate vertically, horizontally, etc. based on a signal specifying the next medical device to be used, and places the target part of the subject at the isocenter of the medical device to be used. , a position detection means that detects the position of the top plate and outputs a signal means for storing in advance a shift amount Δx according to the difference; and based on the specified signal, calculate x-ΔX or x+Δx, perform a control calculation using the calculation result as a target value, and control the drive/operation unit. A table device for medical equipment, comprising a calculation/control unit that outputs a signal. (2) The position detection means detects the height x of the top plate, the storage means memorizes the difference in the isocenter height of each medical device, and the drive/operation unit detects the height x of the top plate. 2. The table device for medical equipment according to claim 1, wherein the table device controls the temperature of the medical device.