JPH05163U - Intraoperative irradiation monitoring system for radiotherapy equipment - Google Patents

Abstract

(57) [Summary] [Structure] An adapter case 3 having an electron beam transmissive mirror 4 tilted at 45 ° to the central axis of the radiation bundle 2 is attached to the lower end of the radiation irradiation unit 1, and peepholes are provided on both sides of the adapter case 3. 9 is provided, the surveillance camera 7 is attached to one of the outsides thereof, and the illumination lamp 11 is attached to the other thereof, and the electron beam transmissive mirror 4 is turned to constitute the intraoperative irradiation monitoring system of the radiotherapy apparatus. [Effects] With the configuration described above, there is an effect that the setter can set the irradiation site while directly looking at the details of the tumorous part.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an intraoperative irradiation monitoring system, and more particularly to an intraoperative irradiation monitoring system that is an accessory of a radiotherapy apparatus.

[0002]

[Prior Art]

 Conventionally, an intraoperative irradiation monitoring system for a radiotherapy device using this type of electron beam has an adapter case with an electron beam transmission type mirror attached to the lower end of the radiation irradiation part, and a monitoring camera (illumination system) on the side of the adapter case. And an optical system with a TV camera system).

Various electron beam tubs are attached to the lower end of the adapter case, and the electron beam tubs are inserted into the tumorous area of the intraoperative patient on the treatment bed to set the irradiation site. The cable of the monitoring camera is connected to each TV monitor installed in the treatment room and the operation room, and the state of the tumor part in the electron beam guide is checked via the electron beam transmission mirror in the adapter case. It is a system that can be displayed on the TV monitor of. With this system, it was possible to monitor the condition of the tumorous part of the intraoperative patient during electron beam irradiation in real time on the TV monitor in the operation room.

[0006] Although a rectangular shape or a pentagonal shape is used for the electron beam tube, a round shape is generally used, and a size range of φ6 cm to φ12 cm is often used. Therefore, if the electron beam to be used has a small diameter or if you want to enlarge the tumor area for monitoring, you can adjust the zoom ratio (magnification) of the surveillance camera to view the enlarged image of the tumor area on the TV monitor. I was able to monitor it.

[0005]

[Problems to be solved by the device]

 In the conventional intraoperative irradiation monitoring system described above, when setting the irradiation site of the tumor part, an electron beam tube suitable for the tumor part is inserted, and the image of the tumor part displayed on the TV monitor in the treatment room is monitored. However, it is necessary to adjust the optical system of the surveillance camera (magnification ratio of the camera zoom lens and focusing), and the TV monitor installation location is generally about 2 m away from the tumor. In addition, it is difficult for the setter (doctor or radiologist) to see the detailed image on the TV monitor, which makes it difficult to set the irradiation site. Further, there is a problem that the setting person cannot directly monitor the condition of the tumorous part, which is difficult to judge from the image on the TV monitor.

[0006]

[Means for Solving the Problems]

 The intraoperative irradiation monitoring system of the radiotherapy apparatus of the present invention is equipped with an adapter case having an electron beam transmission type mirror inclined at 45 ° with respect to the central axis of the radiation flux at the lower end of the radiation irradiation part, and attached to both sides of the adapter case. A viewing window is provided, and a surveillance camera is attached to one of the outsides of the viewing window and an illumination lamp is attached to the other, and the electron beam transmissive mirror is turned.

[0007]

【Example】

 Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view of the intraoperative irradiation monitoring system according to the embodiment of the present invention, in which the electron beam transmissive mirror faces the monitoring camera side. FIG. 2 is similar to FIG. 1, with the electron beam transmissive mirror facing the illumination lamp. FIG. 3 is a side view of the radiotherapy apparatus. In FIG. 1 and FIG. 3, the radiation flux 2 emitted from the radiation irradiating unit 1 passes through an electron beam transmissive mirror 4 tilted at 45 ° in the adapter case 3 and irradiates the tumor portion 6 of the electron beam guide 5. The surveillance camera 7 can monitor the tumorous part 6 via the electron beam transmissive mirror 4 and display it on the TV monitor 8. In FIG. 2, the electron beam transmissive mirror 4 is changed in direction to the viewing window 9 side, and the setting person 10 can monitor the tumorous part by the illumination lamp 11 through the electron beam transmissive mirror 4. ..

[0008]

[Effect of the device]

 As described above, according to the present invention, an adapter case having an electron beam transmissive mirror inclined at 45 ° with respect to the central axis of the radiation flux is attached to the lower end of the radiation irradiation section, and window holes are formed on both sides of the adapter case. By providing a monitoring camera on one side and attaching an illumination lamp on the other side and changing the direction of the electron beam transmissive mirror, there is an effect that the setter can set the irradiation site while directly looking at the details of the tumor. In addition, by changing the direction of the electron beam transmissive mirror to the surveillance camera side after setting the irradiation site, the conventional tumor part can be displayed on the TV monitor by the surveillance camera.

[Brief description of drawings]

FIG. 1 is a sectional view of an intraoperative irradiation monitoring system according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view similar to FIG. 1 when the electron beam transmissive mirror is turned around.

FIG. 3 is a side view of the radiation treatment apparatus.

[Explanation of symbols]

 1 Radiation Irradiation Unit 2 Radiation Flux 3 Adapter Case 4 Electron Beam Transmissive Mirror 5 Electron Beam Tubes 6 Tumor Area 7 Surveillance Camera 8 TV Monitor 9 Viewing Window 10 Specifier 11 Illumination Lamp

Claims (1)

[Claims for utility model registration] [Claim 1] An adapter case having an electron beam transmissive mirror inclined at 45 ° with respect to the central axis of the radiation bundle is attached to the lower end of the radiation irradiation section, and both side surfaces of the adapter case are attached. An intraoperative irradiation monitoring system for a radiation treatment apparatus, characterized in that a viewing camera is provided on one of the outsides of the viewing holes and an illumination lamp is attached to the other of the viewing holes, and the electron beam transmission type mirror is turned around. ..