JPH04102465A - Dial plate and radiotherapy device - Google Patents
Dial plate and radiotherapy deviceInfo
- Publication number
- JPH04102465A JPH04102465A JP2220279A JP22027990A JPH04102465A JP H04102465 A JPH04102465 A JP H04102465A JP 2220279 A JP2220279 A JP 2220279A JP 22027990 A JP22027990 A JP 22027990A JP H04102465 A JPH04102465 A JP H04102465A
- Authority
- JP
- Japan
- Prior art keywords
- radiation
- tumor
- heavy metal
- plastic board
- morbid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001959 radiotherapy Methods 0.000 title claims abstract description 12
- 230000005855 radiation Effects 0.000 claims abstract description 24
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 14
- 238000010894 electron beam technology Methods 0.000 claims abstract description 10
- 206010028980 Neoplasm Diseases 0.000 abstract description 17
- 230000002285 radioactive effect Effects 0.000 abstract 4
- 230000002969 morbid Effects 0.000 abstract 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000002601 radiography Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Landscapes
- Radiation-Therapy Devices (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は放射線治療装置に関し、特に腫瘍部の大きさが
測定できる目盛板を有する放射線治療装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a radiation therapy device, and more particularly to a radiation therapy device having a scale plate that can measure the size of a tumor.
従来この種の放射線治療装置の放射線照射部に設けられ
る照射野用の目盛板は、放射線（Ｘ線）および電子線お
よび可視光が透過することのできるプラスチック板上に
、印刷または彫刻により目盛が付けられていた。Conventionally, the scale plate for the irradiation field provided in the radiation irradiation section of this type of radiotherapy device is a plastic plate through which radiation (X-rays), electron beams, and visible light can pass, and the scale is printed or engraved on it. It was attached.
上述した従来の目盛板は、患者の腫瘍部が体表面にある
場合には、放射線照射部内にある可視光の投光系を利用
することにより、その目盛板の目盛を体表面に投影し、
腫瘍部の大きさを測定することができた。しかし、腫瘍
部が体内にある場合は、その大きさが測定できないとい
う欠点があった。The conventional scale plate described above projects the scale of the scale plate onto the body surface by using a visible light projection system in the radiation irradiation part when the patient's tumor is on the body surface.
We were able to measure the size of the tumor. However, if the tumor is inside the body, its size cannot be measured.
本発明の放射線治療装置の目盛板は、放射線および電子
線および可視光が透過できるプラスチック板に、重金属
を前記プラスチック板の広面に関して等間隔かつクロス
状に点在させている。そして、放射線治療装置において
はこの目盛板を放射線照射部の下端に設置し、その目盛
板を通して患者の腫瘍部に放射線照射して放射線撮影を
行い、患者の体内にある腫瘍部の大きさを測定している
。The scale plate of the radiation therapy apparatus of the present invention has a plastic plate through which radiation, electron beams, and visible light can pass, and heavy metals are dotted on a wide surface of the plastic plate at equal intervals and in a cross shape. In the radiation therapy device, this scale plate is installed at the lower end of the radiation irradiation unit, and radiation is irradiated to the patient's tumor through the scale plate to take a radiograph and measure the size of the tumor within the patient's body. are doing.
次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明による一実施例の平面図、第２図はその
側断面図である。第１図および第２図において、１は放
射線、電子線および可視光が透過することのできるプラ
スチック板である。２は重金属であり、プラスチック板
の広面に関して、ａなる間隔で等間隔かつクロス状に点
在して配置される。FIG. 1 is a plan view of one embodiment of the present invention, and FIG. 2 is a side sectional view thereof. In FIGS. 1 and 2, 1 is a plastic plate through which radiation, electron beams and visible light can pass. Heavy metals 2 are arranged on the wide surface of the plastic plate at equal intervals a and dotted in a cross pattern.
プラスチック板１は、放射線および電子線照射設備を有
する放射線治療装置において、放射線の透過率、減衰率
、照射放射線分布のフラットネスなどの影響が最適にな
る厚さに選ばれる。重金属２は、放射線、電子線ならび
に可視光が透過するのを妨げる。この種類としては、鉛
やタングステンが適当である。一般の金属を使用するこ
ともできるが、Ｘ線撮影されたＸ線フィルム上では、金
属による暗点かぼやけて見ずらくなる欠点がある。プラ
スチック板１としてアクリル樹脂を使用し、重金属２と
してタングステンを使用した場合には、プラスチック板
１及び重金属２の厚さは、２ｍｍが最適値であった。The plastic plate 1 is selected to have a thickness that optimizes the influence of radiation transmittance, attenuation rate, flatness of irradiated radiation distribution, etc. in a radiation therapy apparatus having radiation and electron beam irradiation equipment. Heavy metals 2 prevent radiation, electron beams and visible light from passing through. Lead and tungsten are suitable for this type. Ordinary metals can also be used, but they have the disadvantage that dark spots caused by metals become blurred and difficult to see on X-ray film. When acrylic resin was used as the plastic plate 1 and tungsten was used as the heavy metal 2, the optimum thickness of the plastic plate 1 and the heavy metal 2 was 2 mm.
第３図は、本発明の第２の実施例であり、リニアツクグ
ラフィを撮影中の放射線治療装置の側面図を示している
。FIG. 3 is a second embodiment of the present invention, and shows a side view of a radiation therapy apparatus during linear radiography.
目盛板３は、放射線治療装置の放射線照射部４の下端に
設置される。放射線源５より照射された放射線錐６は、
目盛板３及び患者７の腫瘍部８を透過し、Ｘ線フィルム
を収納したカセツテ９に照射される。このＸ線照射を腫
瘍部８の大きさの場合と最大照射野の場合との２回、連
続照射したＸ線フィルムを一般にリニアツクグラフィと
いう。The scale plate 3 is installed at the lower end of the radiation irradiation section 4 of the radiation therapy apparatus. The radiation cone 6 irradiated by the radiation source 5 is
The radiation passes through the scale plate 3 and the tumor part 8 of the patient 7, and is irradiated onto the cassette 9 containing the X-ray film. An X-ray film in which this X-ray irradiation is continuously performed twice, once for the size of the tumor portion 8 and once for the maximum irradiation field, is generally referred to as linear photography.
従って、本実施例によるリニアツクグラフィのＸ線フィ
ルムには、プラスチック板１に等間隔かつクロス上に点
在している重金属２も撮影される。Therefore, the heavy metals 2 scattered on the plastic plate 1 at equal intervals and in a cross pattern are also photographed on the X-ray film of the linear photography according to this embodiment.
そして、撮影された重金属２と腫瘍部８との寸法関係を
測定することによって、患者７の体内の腫瘍部８の大き
さを知ることができる。By measuring the dimensional relationship between the photographed heavy metal 2 and the tumor 8, the size of the tumor 8 inside the patient's 7 body can be determined.
尚、体表面の腫瘍部の大きさの測定は、前述の従来方法
によって行われる。The size of the tumor on the body surface is measured by the conventional method described above.
以上説明したように本発明は、放射線、電子線および可
視光が透過できるプラスチック板に重金属を前記プラス
チック板の広面に関して等間隔かつクロス状に点在させ
た目盛板を、放射線治療装置の放射線照射部下端に設置
することにより、患者の体内にある腫瘍部の大きさをリ
ニアツクグラフィによって測定することができる効果が
ある。As explained above, the present invention provides a scale plate in which heavy metals are dotted at equal intervals and in a cross shape on a wide surface of a plastic plate that can transmit radiation, electron beams, and visible light. By installing it at the lower end, the size of the tumor within the patient's body can be measured using linear imaging.
１・・・プラスチック板、２・・・重金属、３・・・目
盛板、４・・・放射線照射部、５・・・放射線源、６・
・・放射線錐、７・・・患者、８・・・腫瘍部、９・・
・カセツテ。DESCRIPTION OF SYMBOLS 1...Plastic plate, 2...Heavy metal, 3...Scale plate, 4...Radiation irradiation part, 5...Radiation source, 6...
... Radiation cone, 7... Patient, 8... Tumor area, 9...
・Cassette.
Claims (1)
スチック板に、重金属を前記プラスチック板の広面に関
して等間隔かつクロス状に点在させたことを特徴とする
目盛板。 ２、前記プラスチック板は、１ないし３ｍｍの厚さであ
ることを特徴とする請求項１記載の目盛板。 ３、請求項１又は２記載の目盛板が、放射線照射部の下
端に設置されることを特徴とする放射線治療装置。[Scope of Claims] 1. A scale plate comprising a plastic plate through which radiation, electron beams and visible light can pass, and heavy metals are dotted on a wide surface of the plastic plate at equal intervals and in a cross shape. 2. The scale plate according to claim 1, wherein the plastic plate has a thickness of 1 to 3 mm. 3. A radiation therapy apparatus, wherein the scale plate according to claim 1 or 2 is installed at the lower end of the radiation irradiation section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2220279A JPH04102465A (en) | 1990-08-22 | 1990-08-22 | Dial plate and radiotherapy device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2220279A JPH04102465A (en) | 1990-08-22 | 1990-08-22 | Dial plate and radiotherapy device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04102465A true JPH04102465A (en) | 1992-04-03 |
Family
ID=16748684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2220279A Pending JPH04102465A (en) | 1990-08-22 | 1990-08-22 | Dial plate and radiotherapy device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04102465A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5999591A (en) * | 1996-10-29 | 1999-12-07 | Terumo Kabushiki Kaisha | Measuring instrument and measuring method |
| JP2009502263A (en) * | 2005-07-27 | 2009-01-29 | イヨン ベアム アプリカスィヨン エッス．アー． | Dosimetry equipment for measurement of radiotherapy equipment |
-
1990
- 1990-08-22 JP JP2220279A patent/JPH04102465A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5999591A (en) * | 1996-10-29 | 1999-12-07 | Terumo Kabushiki Kaisha | Measuring instrument and measuring method |
| JP2009502263A (en) * | 2005-07-27 | 2009-01-29 | イヨン ベアム アプリカスィヨン エッス．アー． | Dosimetry equipment for measurement of radiotherapy equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4246607A (en) | X-Ray fluoroscopy device | |
| Creutzberg et al. | Quality assurance using portal imaging: the accuracy of patient positioning in irradiation of breast cancer | |
| Visser et al. | Performance of a prototype fluoroscopic radiotherapy imaging system | |
| KR20070008459A (en) | Portable radiographic imaging apparatus | |
| Wilenzick et al. | Megavoltage portal films using computed radiographic imaging with photostimulable phosphors | |
| US6404848B1 (en) | X-ray image radiographing method and X-ray image radiographing apparatus | |
| Van Battum et al. | Film dosimetry of clinical electron beams | |
| JPH04102465A (en) | Dial plate and radiotherapy device | |
| Reinstein et al. | Contrast enhancement of high-energy radiotherapy films | |
| US4868399A (en) | Method and apparatus for high energy radiography | |
| US3665186A (en) | Half tone radiography method and apparatus | |
| Simpkin | Scatter radiation intensities about mammography units | |
| US4163902A (en) | X-ray apparatus comprising beam shaping restrictor plate having key-shaped gap | |
| US2057325A (en) | Method and device for measuring thicknesses with penetrating rays | |
| EP1069429B1 (en) | X-ray image radiographing method and radiographing apparatus | |
| EP0946948A1 (en) | Device and method for radiological imaging | |
| US4392240A (en) | Method and device for sampling radiation from X-ray machines for analysis | |
| JP2001506899A (en) | Electromagnetic radiation imaging device with controlled diaphragm means | |
| Harper et al. | Radiation dosage in tissue surrounding small beta-ray sources | |
| Haus et al. | Image recording system characteristics for radiation therapy: portal localization and verification | |
| Kihlén et al. | Improved portal film image quality in radiation therapy with high energy photons | |
| Scheck et al. | Digital storage phosphor radiography for treatment verification in radiotherapy | |
| JP2011224030A (en) | Encapsulated sealed radioactive source arrangement image recording apparatus | |
| JPH0715869B2 (en) | Soft X-ray exposure system | |
| Leszczynski | Digital imaging techniques for radiotherapy treatment verification |