TWM501593U - Power emissive monitor for radiation therapy - Google Patents

Description

Radiation monitoring device for radiation therapy

The present invention relates to a radiation therapy device, and more particularly to a radiation amount monitoring device for detecting the amount of radiation of a proton beam radiation.

Cancer is one of the leading causes of death in humans worldwide. In addition to treatments such as tumor resection, chemotherapy, and target therapy, radiation therapy has recently been used to irradiate the site of malignant tumors (ie, cancer) with radiation. Inhibit or kill cancer cells to achieve therapeutic effects. In general, radiation therapy is performed by using a radiotherapy machine to irradiate a cancer with a high-energy ray or particle for irradiation, including X-rays, gamma rays (cobalt 60), electrons, protons, and heavy particles. Radiation therapy may kill normal cells in the surrounding area while killing or destroying cancer cells. Therefore, excessive radiation will affect normal cells and cause side effects, but too low a dose cannot be removed. The effect of cancer cells is therefore a very important issue in the detection and control of radiation during radiation therapy.

At this stage, in order to ensure that the radiation dose or intensity of the radiotherapy machine meets the demand, a detection device provided on a nozzle for guiding radiation is often used to obtain the radiation amount or intensity of the radiation. For example, US Patent Publication No. US20110231147 "Radiation detector and verification technique of positioning accuracy for radiation detector" discloses a radiation detector comprising a plurality of segment electrodes, a plurality of spacers, and a plurality of high voltage electrodes, which are incident along the radiation. The direction is sequentially arranged according to the order of the segment electrode, the spacer and the high voltage electrode, and an electric field is formed between the three by the voltage provided by the high voltage electrode; when the radiation enters the electric field, the electric field is The gas is ionized and collected by the segmented electrode due to the action of the electric field and subjected to subsequent analysis, thereby detecting the amount of radiation emitted.

Since the segment electrode, the spacer and the high voltage electrode of the case form a plurality of electric fields, after the radiation passes through the first high voltage electrode, the radiation enters the next electric field and performs the above detection operation. The accuracy of detecting the amount of radiation is improved by multiple detections; however, it is important to note that since the high voltage electrode provides high voltage on both sides, the two electric fields generated are different in direction, thereby affecting the amount of radiation detection. The accuracy of the time measurement.

The main purpose of the novel is to improve the accuracy of detecting the amount of radiation emitted during radiation therapy.

To achieve the above object, the present invention provides a radiation amount monitoring device for radiation therapy for detecting a proton radiation from a radiation therapy device, the radiation amount monitoring device comprising an intermediate detecting member group, a front a detecting board, a front spacing frame member, a rear detecting panel and a rear spacing frame member, the intermediate detecting component group including a plurality of intermediate detecting panels from a front side adjacent layer column to a rear side and a plurality of a middle spacing frame disposed between each of the intermediate detecting plates, the intermediate detecting plates each including a detecting area adjacent to the front side and a high voltage area adjacent to the rear side, the front detecting board being disposed on the front side And comprising an upper electrode disposed on one side and a front high voltage region disposed on the upper electrode, the rear detection plate being disposed on the rear side and including a segment electrode and a rear detection region on the segment electrode The front spacer frame is disposed between the front detection panel and the intermediate detection component group, and the rear spacer frame member is disposed between the rear detection panel and the intermediate detection component group.

A first ion chamber is formed between the front high voltage region and the adjacent detection region, and a plurality of second ion chambers are formed between the adjacent detection regions and the high voltage region between the intermediate detection plates. A third ion chamber is formed between the rear detection region and the adjacent high voltage region.

The first detection chamber, the front spacer frame, the intermediate detecting member group, the rear spacer frame member, and the rear detecting plate are sequentially stacked from the front side to the rear side, so that the first ion chamber is disposed in the first ion chamber. The electric field formed by the chamber, the second ion chambers and the third ion chamber are all in the same direction, so when the proton radiation penetrates the front detecting plate, the intermediate detecting member group and the rear detecting portion from the front side When measuring the board, the proton beam radiation detected by each of the detection area and the rear detection area does not cause an error due to the difference of the electric field direction, thereby improving the accuracy of detecting the proton beam radiation amount.

As can be seen from the above, the present invention is characterized in that the front detecting plate, the front spacing frame member, the intermediate detecting member group, the rear spacing frame member and the rear detecting plate are sequentially from the front side to the rear side. The stacking arrangement is such that the proton radiation is less susceptible to the direction of the electric field when penetrating the front detecting plate, the intermediate detecting member group and the rear detecting plate, thereby improving the accuracy of detecting the proton beam emission.

The detailed description and technical content of this new model are described below with the following diagram:

Please refer to FIG. 1 , FIG. 2 and FIG. 3 , which are schematic perspective views, structural exploded view and cross-sectional structural view of a preferred embodiment of the present invention, as shown in the figure: The radiation monitoring device for radiation therapy is for detecting a proton radiation A from a radiation therapy device, the radiation monitoring device comprising an intermediate detecting component group 30, a front detecting plate 10, and a front spacing a frame member 40, a rear detecting plate 20, a rear spacer frame member 50, a first shielding member 60, and a second shielding member 70. The intermediate detecting member group 30 includes a plurality of adjacent front side columns to An intermediate detecting plate 31 on the rear side and a plurality of intermediate spacing frames 32 disposed between the intermediate detecting plates 31, each of the intermediate detecting plates 31 includes a detecting area 311 adjacent to the front side and a close The front side detection plate 10 is disposed on the front side and includes an upper electrode 11 disposed on one side and a front high voltage region 12 disposed on the upper electrode 11. The rear detection plate 20 is disposed on the front side The rear side includes a segment electrode 21 and a rear portion of the segment electrode 21 The first shielding member 60 includes a first shielding area 61 and a first penetration area 62 disposed in the center of the first shielding area 61. The second shielding member 70 includes a second shielding area 71 and a first shielding member 60 is disposed on a side of the front detecting plate 10 opposite to the upper electrode 11 , and the second shielding member 70 is disposed on the second shielding portion 72 disposed in the center of the second shielding region 71 The front detecting frame 20 is disposed between the front detecting plate 10 and the intermediate detecting member group 30, and the rear spacing frame member 50 is disposed on the side of the segment detecting electrode 20. The rear detecting plate 20 is interposed between the intermediate detecting member group 30.

A first ion chamber 80 is formed between the front high voltage region 12 and the adjacent detection region 311, and the adjacent detection region 311 and the high voltage region 312 between the intermediate detection plates 31 are A plurality of second ion chambers 81 are formed, and a third ion chamber 82 is formed between the rear detection region 22 and the adjacent high voltage region 312; in particular, in the present embodiment, the intermediate detectors are The number of the test plates 31 and the intermediate spacer frames 32 can be increased as needed, thereby increasing the number of the second ion chambers 81.

In addition, in the embodiment, the detection area 311 includes an external detection area 311a and an internal detection area 311b. The rear detection area 22 further includes an external detection area 22a. And an internal detection area 22b. The internal detection area 311b is disposed in the center of the external detection area 311a and has a smaller area than the external detection area 311a. The internal rear detection area 22b is disposed in the external detection area 22a. The center is smaller than the outer rear detection area 22a.

In the embodiment of the present invention, the intermediate detection board 31 further includes a plurality of first intermediate detection boards 31a and a plurality of first intermediate detection boards 31a. a second intermediate detecting board 31b, the first intermediate detecting board 31a includes a first detecting area 311c adjacent to the front side and a first high voltage area 312a adjacent to the back side, and the second intermediate detecting The measuring plate 31b includes a second detecting area 311d adjacent to the front side and a second high voltage area 312b adjacent to the rear side, wherein the first detecting area 311c has a different shape from the second detecting area 311d. In the embodiment, the first detecting area 311c has a larger area than the second detecting area 311d, and the first detecting area 311c is disposed near the front side of the first intermediate detecting board 31a. The second detecting area 311d is disposed at a position where the second intermediate detecting board 31b is close to the front side.

In addition, in a preferred embodiment of the present invention, a front detection panel 10, the front spacer frame member 40, the intermediate detecting member group 30, the rear spacer frame member 50, and the rear detector are further included. The fixing member 90 of the first shielding member 60 and the second shielding member 70, the fixing assembly 90 includes a plurality of the front detecting plate 10, the front spacing frame member 40, and the intermediate detecting member group 30. The rear spacer frame member 50, the rear detecting plate 20, the first shielding member 60 and the screw 91 of the second shielding member 70, and a plurality of nuts 92 sleeved on both ends of the screw 91.

Further, the front detecting board 10 further includes a front area 13 surrounding the front high voltage area 12, and the rear detecting board 20 further includes a rear area 23 surrounding the rear detecting area 22, each of the middle The detecting board 31 further includes a first connecting area 313 surrounding the detecting area 311 and a second connecting area 314 surrounding the high voltage area 312. The front spacing frame member 40 and the front of the front detecting board 10 respectively The connection area 13 and the first connection area 313 of the adjacent intermediate detection board 31 are connected to each other, and the rear space frame member 50 and the rear connection area 23 of the rear detection board 20 and the adjacent intermediate detection The second connection regions 314 of the test panel 31 are connected to each other, and each of the intermediate spacer frames 32 is connected to the first connection region 313 and the second connection region 314 of the adjacent two intermediate detection panels 31.

When the proton radiation A penetrates the radiation amount monitoring device along a incident direction X of the proton beam, the gases in the first ion chamber 80, the second ion chambers 81, and the third ion chamber 82 may Being separated from the detection area 311 and the rear detection area 22 for subsequent collection detection, thereby completing the radiation detection of the proton radiation A; in the present invention, due to the front detection board 10, the front The spacer frame member 40, the intermediate detecting member group 30, the rear spacer frame member 50, and the rear detecting plate 20 are sequentially stacked from the front side to the rear side along the incident direction X of the proton beam, so that the first The direction of the electric field formed in the ion chamber 80, the second ion chambers 81 and the third ion chamber 82 are uniform, so that the proton radiation A penetrates the front detecting plate along the incident direction X of the proton beam. 10. In the intermediate detecting component group 30 and the rear detecting panel 20, the proton beam radiation detected by each of the detecting area 311 and the rear detecting area 22 does not cause an error due to different electric field directions. In turn, the accuracy of detecting the amount of proton beam radiation is improved.

In summary, the present invention has the following characteristics:

1. The front detection plate, the intermediate detection component group and the rear detection plate are sequentially stacked from the front side to the rear side along the incident direction of the proton beam, so that the proton radiation penetrates the front detection The measuring plate, the intermediate detecting component group and the rear detecting plate are less susceptible to the influence of the electric field direction, thereby improving the accuracy of detecting the proton beam radiation amount.

2. The first detection zone has a different area from the second detection zone, so that the accuracy of detecting the radiation amount can be further improved.

Therefore, this new type is highly progressive and meets the requirements for applying for a new type of patent. It is required to apply in accordance with the law, and the Bureau of Health will grant patents as soon as possible.

The present invention has been described in detail above, but the above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited. That is, the equal changes and modifications made in accordance with the scope of this new application shall remain within the scope of the patent of this new type.

10‧‧‧ front detection board
11‧‧‧Upper electrode
12‧‧‧Pre-high pressure zone
13‧‧‧ Front area
20‧‧‧After detection board
21‧‧‧ segment electrode
22‧‧‧post detection area
22a‧‧‧External post-detection area
22b‧‧‧Internal rear detection zone
23‧‧‧After the area
30‧‧‧Intermediate detection group
31‧‧‧Intermediate detection board
31a‧‧‧First Intermediate Detection Board
31b‧‧‧Second intermediate detection board
311‧‧‧Detection area
311a‧‧‧External Detection Zone
311b‧‧‧Internal detection area
311c‧‧‧First detection area
311d‧‧‧Second detection area
312‧‧‧High pressure zone
312a‧‧‧First High Pressure Zone
312b‧‧‧second high pressure zone
313‧‧‧ first junction area
314‧‧‧Second area
32‧‧‧Interval frame
40‧‧‧ front spacing frame
50‧‧‧ rear space frame
60‧‧‧First shield
61‧‧‧First shelter area
62‧‧‧First penetration zone
70‧‧‧Second shield
71‧‧‧Second shelter
72‧‧‧second penetration zone
80‧‧‧First Ion Chamber
81‧‧‧Second ion chamber
82‧‧‧ third ion chamber
90‧‧‧Fixed components
91‧‧‧ screw
92‧‧‧ nuts
A‧‧‧Proton radiation
X‧‧‧Proton beam incident direction

Figure 1 is a schematic perspective view of a partial structure of the present invention. Figure 2 is a schematic exploded view of the partial structure of the present invention. Fig. 3 is a schematic cross-sectional view showing a part of the structure of the present invention.

10‧‧‧ front detection board

20‧‧‧After detection board

30‧‧‧Intermediate detection group

31‧‧‧Intermediate detection board

32‧‧‧Interval frame

40‧‧‧ front spacing frame

50‧‧‧ rear space frame

60‧‧‧First shield

70‧‧‧Second shield

90‧‧‧Fixed components

91‧‧‧ screw

92‧‧‧ nuts

Claims (8)

A radiation monitoring device for radiation therapy for detecting a proton radiation from a radiation therapy device, the radiation monitoring device comprising: an intermediate detecting component group, the intermediate detecting component group comprising a plurality of An intermediate detecting plate from a front side adjacent layer to a rear side and a plurality of intermediate spacing frames disposed between the intermediate detecting plates, the intermediate detecting plates each including a detecting area adjacent to the front side And a high voltage region adjacent to the rear side; a front detecting plate disposed on the front side, the front detecting plate includes an upper electrode disposed on one side and a front high voltage region disposed on the upper electrode; a front spacing frame between the front detecting plate and the intermediate detecting component group; a rear detecting plate disposed on the rear side, the rear detecting plate comprising a segment electrode and a segment electrode a rear detection frame; and a rear spacer frame disposed between the rear detection plate and the intermediate detection component; wherein a first ion is formed between the front high voltage region and the adjacent detection region a chamber, between the adjacent detection zone and the high voltage zone between the intermediate detection plates Into a plurality of second ion chamber to form a third chamber between the plasma region and the detection region adjacent to the high pressure. The radiation monitoring device for radiation therapy according to the first aspect of the invention, wherein the detection zone further comprises an external detection zone and an internal detection zone, wherein the detection zone further comprises an external post-detection a detection area and an internal detection area, the internal detection area is disposed in the center of the external detection area and the area is smaller than the external detection area, and the internal rear detection area is disposed in the center and the area of the external detection area Less than the external post detection zone. The radiation amount monitoring device for radiation therapy according to claim 1, wherein the intermediate detecting plate comprises a plurality of first intermediate detecting plates and a plurality of first interlaced boards and the first intermediate detecting plate The second intermediate detecting board includes a first detecting area adjacent to the front side and a first high voltage area adjacent to the rear side, and the second intermediate detecting board includes a front side adjacent to the front side a second detection area and a second high voltage area adjacent to the rear side, wherein the first detection area has an area different from the second detection area. The radiation amount monitoring device for radiation therapy according to claim 3, wherein the first detection zone has an area larger than the second detection zone. The radiation monitoring device for radiation therapy according to claim 1, further comprising a first shielding member and a second shielding member, the first shielding member comprising a first shielding area and a a first penetrating area in the center of the first shielding area, the second shielding member includes a second shielding area and a second penetration area disposed in the center of the second shielding area, the first shielding member is disposed on the front side The second shielding member is disposed on one side of the detecting electrode with respect to the one side of the upper electrode. The radiation amount monitoring device for radiation therapy according to claim 1, further comprising a front detecting plate, the front spacing frame member, the intermediate detecting member group, and the rear spacing frame And a fixing component of the rear detecting plate, the fixing component comprising a plurality of screws extending through the front detecting plate, the front spacing frame member, the intermediate detecting member group, the rear spacing frame member and the rear detecting plate A plurality of nuts are disposed on both ends of the screw. The radiation quantity monitoring device for radiation therapy according to claim 1, wherein the front detection plate further comprises a front area surrounding the front high voltage area, and the rear detection board further comprises a surrounding area. In the rear area of the rear detection area, the front area of the front detection board and the front space frame are connected to each other, and the rear area of the rear detection board is connected to the corresponding rear space frame. The radiation monitoring device for radiation therapy according to claim 6, wherein each of the intermediate detecting plates further comprises a first receiving area surrounding the detecting area and a second connection surrounding the high voltage area. And the front spacer frame is connected to the first connection area of the adjacent intermediate detection board, and the rear spacer frame is connected to the second connection area of the adjacent intermediate detection board, and the The middle spacer frame is connected to the first connection area and the second connection area of the adjacent two intermediate detection boards.