JPH10179565A - Treatment planning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain deflection and vibration of an isocentric rotary base stand, and reduce weight by arranging a contact part to regulate downward deflection of a bed rotating base stand by running on a receiving part arranged on a floor surface, in an idle end side place of the bed rotating base stand. SOLUTION: A roller 10 is provided through a bracket 9 on a lateral side surface on the idle end side of a bed rotating base stand 6a of a bed main body 6, and a deflection regulating contact part is constituted. The roller 10 exists in a noninterfering position to an isocentric rotary base stand 5 in a posture in which the bed 6 turns to an X-ray simulator 2, and floats from a floor surface. When the bed main body 6 is rotated by about 90 deg. so as to turn to a CT simulator, the roller 10 runs on a receiving part 11, and restrains deflection and vibration of the whole bed main body 6. In this way, deflection and vibration of the bed main body 6 when photographing work is performed by the X-ray simulator 2, can be restrained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus used for treatment planning when performing radiation therapy on a tumor or the like generated in the body. CT simulator to check the position and X-ray to determine the appropriate radiation irradiation position and irradiation direction
An X-ray simulator for fluoroscopy was placed around an isocentric rotary bed, and the process of determining the radiation irradiation position and irradiation direction by the X-ray simulator was laid on the rotary bed from the step of confirming the affected part by the CT simulator. The present invention relates to a treatment planning device configured to be able to perform the treatment continuously as it is.

[0002]

2. Description of the Related Art An isocentric rotary bed used in the above-mentioned treatment planning apparatus is constructed by horizontally supporting a bed body at a free end side of an isocentric rotary base that moves horizontally on a floor surface. When performing X-ray imaging using an X-ray simulator or X-ray tomography using a CT simulator, the isocentric rotation bed is prevented from bending or vibrating. The bed and the bed rotation base of the bed body were configured to be extremely rigid.

[0003]

The isocentric rotary base and the bed rotary base of the bed body having extremely high rigidity have a very large weight, and the manufacturing cost of the bed itself is high. Transporting and assembling the bed required a great deal of labor.

The present invention has been made in view of such circumstances, and in this kind of treatment planning apparatus, it is possible to suppress the occurrence of bending and vibration of the isocentric rotating base. It is an object to reduce the weight of the bed itself.

[0005]

The present invention has the following configuration to achieve the above object.

According to the first aspect of the present invention, there is provided an isocentric rotary bed having a bed body horizontally rotatably supported on a free end side of an isocentric rotary base that horizontally rotates on a floor surface. A treatment planning apparatus comprising a CT simulator and an X-ray simulator, wherein a subject lying on a top plate of a bed body is selectively applied to the CT simulator and the X-ray simulator. The bed rotating base rotatably supported on the free end side of the table is placed on a receiving portion provided on the floor surface in a state where the bed body is rotated to a predetermined use posture swung from the isocentric rotating base. Is provided at the free end side portion of the bed rotating base so as to restrict the downward bending of the bed rotating base after riding on the bed.

According to a second aspect of the present invention, in the first aspect of the present invention, the contact portion is provided so as to slightly float above the floor surface, and the receiving portion is provided so as to protrude above the floor surface. And

The invention according to claim 3 is the invention according to claim 1 or 2
In the invention, the abutment portion is constituted by a roller disposed on a side portion on the free end side of the bed rotating base.

The invention according to claim 4 is the invention according to claims 1, 2, 3
In any one of the inventions described above, a roller is provided on the lower surface on the free end side of the bed rotating base so as to ride on the upper surface of the isocentric rotating base.

[Operation] The operation of the present invention is as follows.

According to the first aspect of the present invention, when the bed body is rotated to the position where it is swung out of the isocentric rotating base, the contact portion provided on the free end side of the bed rotating base is on the floor surface. And suppresses the bending and vibration of the bed rotating base.

According to the second aspect of the present invention, the contact portion of the bed rotating base floats from the floor surface up to the predetermined use posture, and does not resist rotation of the bed body.
Only when in a predetermined use posture, the vehicle rides on the receiving portion and exhibits a desired bending suppressing function.

According to the third aspect of the present invention, since the contact portion is a rotatable roller, even if it comes into contact with the floor surface during rotation of the bed body, it is unlikely to become a resistance, and the rider can ride on the receiving portion. The climb is performed smoothly.

According to the fourth aspect of the present invention, even when the bed body overlaps on the isocentric rotating base, bending and vibration of the bed rotating base are suppressed, and processing in this posture can be performed with high accuracy.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an overall plan of a treatment planning apparatus according to the present invention. This treatment planning apparatus performs X-ray fluoroscopy around the isocentric rotary bed 1.
The X-ray simulator 2 and the CT simulator 3 for performing X-ray tomography are arranged so that their treatment directions are orthogonal to each other, and the X-ray simulator 2 and the subject M are laid on the isocentric rotary bed 1 while lying down. CT simulator 3
It is configured to be able to selectively apply to.

On the side of the CT simulator 3, there is provided a sighting projector 4 for projecting a radiation irradiation sighting mark on the subject M with a laser beam or the like. C
When the radiation irradiation position is determined based on the information obtained by the X-ray tomography in the T simulator 3, the irradiation mark is written on the body surface of the subject M in accordance with the projection mark, and the subsequent X-ray In X-ray fluoroscopy or radiotherapy using the simulator 2, X
Fluoroscopy or radiation irradiation will be performed.

The isocentric rotary bed 1 comprises:
As shown in FIG. 2, a bed body 6 whose height can be adjusted on the free end side of an isocentric rotating base 5 that moves horizontally on the floor about a vertical axis a around a vertical axis b. At the lower end of the bed body 6, a bed rotating base 6a is provided at the lower end of the bed body 6 so as to be connected to the isocentric rotating base 5 so as to be horizontally rotatable.
At the upper end of the table, a top plate 6b for lying down the subject M is provided so as to be horizontally slidable along a longitudinal direction thereof.

Here, an arc-shaped rail 7 centered on the vertical axis a is laid on the floor surface F, and the lower surface of the isocentric rotary base 5 on the free end side is provided on the rail 7. Is provided, and the roller 8 is received and supported by the rail 7 so that the bending and vibration of the isocentric rotating base 5 are suppressed.

As shown in FIG. 5, a roller 10 is provided on a lateral side surface of the bed body 6 on the free end side of the bed rotating base 6a via a bracket 9 as a contact portion for controlling deflection. I have. As shown in FIGS. 1 and 4, the roller 10 is in a state where the bed body 6 is rotated in an overlapping position on the isocentric rotating base 5, that is, the bed body 6 faces the X-ray simulator 2. When in the posture, it is located at a lateral position that does not interfere with the isocentric rotating base 5 and is arranged at a height that slightly rises above the floor surface F.

Then, as shown in FIG.
Is 90 degrees clockwise from the attitude toward X-ray simulator 2.
When the robot 10 is swung toward the CT simulator 3, the receiving part 11 on which the roller 10 rides is slightly elevated above the floor F, and the roller 10 rides on the receiving part 11. Bed body 6
The entire bending and vibration are suppressed. Note that the end of the receiving portion 11 is formed on an inclined surface 11a in order to make it easy for the roller 10 to get on.

The present invention can be implemented in the following modes. As shown in FIGS. 7 and 8, when the bed body 6 is positioned on the lower surface of the bed body 6 on the free end side of the bed rotating base 6 a so as to overlap the isocentric rotating base 5, By providing the roller 12 that rides on the rotating base 5, bending and vibration of the bed body 6 during imaging work by the X-ray simulator 2 can be suppressed.

The roller 10 as a contact portion provided on the lateral side surface of the bed rotation base 6a may be provided at a height that comes into contact with the floor surface F so as to always follow the floor surface F. In this case, the receiving portion is configured to be flush with the floor surface F. If the flatness of the floor surface F cannot be ensured, the roller is mounted so as to be able to be displaced up and down a little through a strong elastic material, and the roller rolls while absorbing a slight change in height of the floor surface F. By doing so, bending and vibration of the bed body 6 can be suppressed to some extent.

Instead of the roller 10, a resin block may be used as a contact portion for controlling deflection.

[0025]

As is clear from the above description, according to the present invention, the following effects can be expected.

According to the first aspect of the present invention, the contact portion provided on the free end side of the bed rotating base is caused to ride on the receiving portion on the floor surface, thereby suppressing bending and vibration of the bed body. The rigidity of the bed rotating base itself does not need to be particularly increased, and the weight of the entire isocentric rotating bed can be reduced accordingly.

According to the second aspect of the present invention, when rotating the bed body, contact resistance between the contact portion provided on the bed rotating base and the floor surface is not generated, and the bed rotating operation can be performed smoothly and lightly. It can be performed.

According to the third aspect of the present invention, it is possible to smoothly climb over the abutting portion on the floor surface, and the handleability is excellent.

According to the fourth aspect of the present invention, not only in the posture in which the bed body is swung out from the isocentric rotating base but also in the posture where the bed body is overlapped on the isocentric rotating base, The bending and vibration of the main body can be suppressed, and the processing operation in each posture can be performed with high accuracy.

[0030]

[Brief description of the drawings]

FIG. 1 is an overall plan view of a treatment planning device according to the present invention.

FIG. 2 is a side view showing a relationship between an isocentric rotary bed and an X-ray simulator.

FIG. 3 is a side view showing a relationship between an isocentric rotary bed and a CT simulator.

FIG. 4 is a perspective view showing a relationship between an isocentric rotary bed and an X-ray simulator.

FIG. 5 is a perspective view illustrating a configuration of a deflection regulating portion.

FIG. 6 is a front view showing an operation state of a deflection regulating portion.

FIG. 7 is a side view showing a relationship between an isocentric rotary bed and an X-ray simulator in another embodiment.

FIG. 8 is a perspective view showing a main part thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Isocentric rotary bed 2 X-ray simulator 3 CT simulator 5 Isocentric rotary base 6 Bed body 6a Bed rotary base 10 Contact part (roller) 11 Receiving part

Claims (4)

[Claims] 1. An isocentric rotary bed having a bed body supported rotatably on a free end side of an isocentric rotary base horizontally rotating on a floor surface.
A treatment planning apparatus comprising a CT simulator and an X-ray simulator, wherein a subject lying on a top plate of a bed body is selectively applied to the CT simulator and the X-ray simulator. The bed rotating base rotatably supported on the free end side of the table is placed on a receiving portion provided on the floor surface in a state where the bed body is rotated to a predetermined use posture swung from the isocentric rotating base. The treatment planning device is provided with a contact portion that regulates downward bending of the bed rotating base by climbing on the free end side of the bed rotating base. 2. The treatment planning apparatus according to claim 1, wherein the contact portion is provided so as to slightly float above the floor surface, and the receiving portion is provided so as to protrude above the floor surface. 3. The treatment planning device according to claim 1, wherein the abutment portion is constituted by a roller disposed on a side portion on a free end side of the bed rotating base. 4. The lower surface on the free end side of the bed rotating base,
4. The treatment planning apparatus according to claim 1, further comprising a roller that rides on an upper surface of the isocentric rotating base.