JPH0555825B2 - - Google Patents
Info
- Publication number
- JPH0555825B2 JPH0555825B2 JP57097784A JP9778482A JPH0555825B2 JP H0555825 B2 JPH0555825 B2 JP H0555825B2 JP 57097784 A JP57097784 A JP 57097784A JP 9778482 A JP9778482 A JP 9778482A JP H0555825 B2 JPH0555825 B2 JP H0555825B2
- Authority
- JP
- Japan
- Prior art keywords
- dimensional
- film
- phosphor film
- radiation
- panel
- 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.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/2012—Measuring radiation intensity with scintillation detectors using stimulable phosphors, e.g. stimulable phosphor sheets
- G01T1/2014—Reading out of stimulable sheets, e.g. latent image
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Conversion Of X-Rays Into Visible Images (AREA)
- Measurement Of Radiation (AREA)
- Radiography Using Non-Light Waves (AREA)
- Nuclear Medicine (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Description
【発明の詳細な説明】 〔発明の属する技術分野〕 この発明は二次元放射線検出器に関する。[Detailed description of the invention] [Technical field to which the invention pertains] This invention relates to a two-dimensional radiation detector.
本発明に関係の深い従来発明例を第１図ａ，ｂ
に示す。これらは特開昭56−11393号、特開昭56
−11397号公報に開示されているもので、図ａは
放射線像の記録状態を、又、図ｂは再生状態を表
わしている。図中、１はＸ線管、２は被検体、３
は蓄積性蛍光体膜、４はHe−Neレーザ、５は偏
光装置、６は集光シート、７は光電子増倍管、８
はデータ処理装置、９は画像表示装置をそれぞれ
示す。
Examples of conventional inventions closely related to the present invention are shown in Figures 1a and b.
Shown below. These are JP-A-56-11393, JP-A-56
This is disclosed in Japanese Patent No. 11397, in which Figure a shows the recording state of a radiation image, and Figure b shows the reproduced state. In the figure, 1 is the X-ray tube, 2 is the subject, and 3
4 is a stimulable phosphor film, 4 is a He-Ne laser, 5 is a polarizer, 6 is a condensing sheet, 7 is a photomultiplier tube, 8
9 represents a data processing device, and 9 represents an image display device.
しかるにこの従来例は以下のような欠点や問題
点が存在する。 However, this conventional example has the following drawbacks and problems.
(1) 蓄積性蛍光体膜は放射線像記録後に、付属す
る再生装置に改めてかける必要があり、即時性
に欠ける。(1) After recording a radiation image, the stimulable phosphor film needs to be reapplied to the attached reproducing device, which lacks immediacy.
(2) 蓄積性蛍光体膜の放射線像再生時における光
掃引は、機械的手段によつてなされているた
め、再生時間の短縮化が困難である。(2) Since optical sweeping during reproduction of a radiation image of a stimulable phosphor film is performed by mechanical means, it is difficult to shorten the reproduction time.
この発明は上述した従来装置の欠点を改良した
もので、操作性がよく放射線像の再生時間も短か
い二次元放射線検出器を提供することを目的とす
る。
The present invention improves the above-mentioned drawbacks of the conventional apparatus, and aims to provide a two-dimensional radiation detector that is easy to operate and has a short radiation image reproduction time.
本発明は、放射線照射後に光励起することによ
りこの放射線の照射量に対応する量の光を発する
蛍光体膜と、前記蛍光体膜を光励起掃引するため
の二次元励起パネルと、前記蛍光体から発する光
を検出するための二次元光検出機能膜とを有し、
これらが互いに近接して多層構造をなしているこ
とを特徴とする二次元放射線検出器を提供するも
のである。
The present invention provides a phosphor film that emits light in an amount corresponding to the amount of radiation irradiated by photoexcitation after radiation irradiation, a two-dimensional excitation panel for optically excitation sweeping the phosphor film, and a phosphor film that emits light in an amount corresponding to the amount of radiation irradiated. It has a two-dimensional light detection function film for detecting light,
The object of the present invention is to provide a two-dimensional radiation detector characterized in that these elements are close to each other and form a multilayer structure.
［発明の効果］ 本発明の効果は以下の点である。[Effect of the invention] The effects of the present invention are as follows.
(1) 蓄積性蛍光体膜と光励起用の二次元励起パネ
ルおよび光検出用の二次元光検出機能膜が一体
化されているので、特別な像再生装置が不要で
ある。(1) Since the stimulable phosphor film, the two-dimensional excitation panel for photoexcitation, and the two-dimensional photodetection function film for photodetection are integrated, no special image reproducing device is required.
(2) 蓄積性蛍光体膜の放射線像再生時における励
起掃引は、二次元励起パネルにより電気的に行
われるので、像再生時間の短縮が可能である。(2) The excitation sweep during radiation image reproduction of the stimulable phosphor film is electrically performed by a two-dimensional excitation panel, making it possible to shorten the image reproduction time.
以下本発明の一実施例を第２図に示す。図中、
１０はＸ線管、１１は被検体、１２はアモルフア
スシリコン光検出膜、１３は蓄積性蛍光体膜、１
４は二次元励起パネル、１５はＸアドレス回路、
１６はＹアドレス回路、１７は増幅器、１８はデ
ータ処理装置、１９は画像表示装置をそれぞれ示
す。
An embodiment of the present invention is shown in FIG. 2 below. In the figure,
10 is an X-ray tube, 11 is a subject, 12 is an amorphous silicon photodetection film, 13 is a stimulable phosphor film, 1
4 is a two-dimensional excitation panel, 15 is an X address circuit,
16 is a Y address circuit, 17 is an amplifier, 18 is a data processing device, and 19 is an image display device.
上記のような構成により、蓄積性蛍光体膜に記
録される放射線像は、二次元励起パネルにより高
速に掃引され、光信号として１７，１８，１９に
よつて再生される。第３図は光励起としてプラズ
マ放電を利用する方式で、図中、２０はガラス基
板、２１はＸ電極、２２は放電ガス、２３はＹ電
極、２４はガラス基板、２５は蓄積性蛍光体膜
（希土類元素付活バリウムフルオロハライドな
ど）、２６はITO透明信号電極（In2O3−SnO2）、
２７はｎ−a.Si（ｎ型アモルフアスシリコン）、２
８はｉ−a.Si（ｉ型アモルフアスシリコン）、２９
はｐ−a.Si（ｐ型アモルフアスシリコン）、３０は
Al接地電極をそれぞれ示す。２６〜３０は、pin
型アモルフアスシリコン光検出膜で、２５の蛍光
体膜から発する光を検出する役割を果す。製造方
法としては、例えば、ガラス基板２４に連続的に
２５〜３０の膜を形成すればよい。 With the above configuration, the radiation image recorded on the stimulable phosphor film is swept at high speed by the two-dimensional excitation panel and reproduced by optical signals 17, 18, and 19. Figure 3 shows a method that uses plasma discharge as photoexcitation. In the figure, 20 is a glass substrate, 21 is an X electrode, 22 is a discharge gas, 23 is a Y electrode, 24 is a glass substrate, and 25 is a stimulable phosphor film ( 26 is an ITO transparent signal electrode (In 2 O 3 −SnO 2 ),
27 is n-a.Si (n-type amorphous silicon), 2
8 is ia.Si (i-type amorphous silicon), 29
is p-a.Si (p-type amorphous silicon), 30 is
Al ground electrodes are shown respectively. 26-30 is pin
This is an amorphous silicon photodetection film that plays the role of detecting the light emitted from the 25 phosphor films. As a manufacturing method, for example, 25 to 30 films may be continuously formed on the glass substrate 24.
(1) 二次元励起パネルとしては、前述の実施例で
説明したもの以外に、二次元LEDパネル、二
次元EL（エレクトロ・ルミネツセンス）パネル
などを使用することが可能である。
(1) As the two-dimensional excitation panel, it is possible to use a two-dimensional LED panel, a two-dimensional EL (electroluminescence) panel, etc. in addition to those described in the above embodiments.
(2) 前述の実施例においては、多層構造が（二次
元励起パネル）→（蓄積性蛍光体膜）→（二次
元光検出機能膜）の順序であるが、この順序は
任意に偏向可能である。(2) In the above embodiment, the multilayer structure is in the order of (two-dimensional excitation panel) → (stimulable phosphor film) → (two-dimensional light detection function film), but this order can be changed arbitrarily. be.
(3) 二次元励起パネルから発する光と、蓄積性蛍
光体膜から発する光とを分離するために、波長
選択性フイルタ膜を多層構造の要素として挿入
することができる。（前述の実施例（第３図）
の場合、２５と２６の間に挿入する。）
(4) 二次元光検出機能膜としては、アモルフアス
シリコン膜以外に任意の素材から構成される光
検出機能膜を利用することができる。(3) In order to separate the light emitted from the two-dimensional excitation panel and the light emitted from the stimulable phosphor film, a wavelength-selective filter film can be inserted as an element of the multilayer structure. (The above-mentioned embodiment (Fig. 3)
If so, insert between 25 and 26. ) (4) As the two-dimensional photodetection function film, a photodetection function film made of any material other than the amorphous silicon film can be used.
(5) 二次元光検出機能膜からの信号出力の取り出
しは、単一の電極だけで行うのではなく、分離
されている複数個の電極を利用する穂法もあ
る。(5) Signal output from a two-dimensional photodetection functional film is not performed using only a single electrode, but there is also a method that uses multiple separated electrodes.
第１図は従来例を示す図、第２図及び第３図は
本発明の実施例を示す図である。
１……Ｘ線管、２……被検体、３……蓄積性蛍
光体膜、４……He−Neレーザ、５……偏光装
置、６……集光シート、７……光電子増倍管、８
……データ処理装置、９……画像表示装置、１０
……Ｘ線管、１１……被検体、１２……アモルフ
アスシリコン光検出膜、１３……蓄積性蛍光体
膜、１４……二次元励起パネル、１５……Ｘアド
レス回路、１６……Ｙアドレス回路、１７……増
幅器、１８……データ処理装置、１９……画像表
示装置、２０，２４……ガラス基板、２１……Ｘ
電極、２２……放電ガス、２３……Ｙ電極、２５
……蓄積性蛍光体膜、２６……ITO透明信号電
極、２７……ｎ−ａ・Si、２８……ｉ−ａ・Si、
２９……ｐ−ａ・Si、３０……Al接地電極。
FIG. 1 is a diagram showing a conventional example, and FIGS. 2 and 3 are diagrams showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... X-ray tube, 2... Subject, 3... Stimulative phosphor film, 4... He-Ne laser, 5... Polarizer, 6... Light condensing sheet, 7... Photomultiplier tube , 8
...Data processing device, 9...Image display device, 10
. . . X-ray tube, 11 . . . Test object, 12 . Address circuit, 17...Amplifier, 18...Data processing device, 19...Image display device, 20, 24...Glass substrate, 21...X
Electrode, 22...Discharge gas, 23...Y electrode, 25
...Stormable phosphor film, 26...ITO transparent signal electrode, 27...n-a.Si, 28...i-a.Si,
29...p-a.Si, 30...Al ground electrode.
Claims (1)
射線の照射量に対応する量の光を発する蛍光体膜
と、前記蛍光体膜を光励起掃引するための二次元
パネルと、前記蛍光体から発する光を検出するた
めの二次元光検出機能膜とを有し、これらが互い
に近接して多層構造をなしていることを特徴とす
る二次元放射線検出器。1. A phosphor film that emits an amount of light corresponding to the irradiation amount of radiation by photoexcitation after radiation irradiation, a two-dimensional panel for optically excitation sweeping the phosphor film, and detecting the light emitted from the phosphor. 1. A two-dimensional radiation detector comprising a two-dimensional photodetection function film for detecting light, the two-dimensional radiation detector having a multilayer structure in close proximity to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9778482A JPS58215575A (en) | 1982-06-09 | 1982-06-09 | Detector for two-dimensional radioactive ray |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9778482A JPS58215575A (en) | 1982-06-09 | 1982-06-09 | Detector for two-dimensional radioactive ray |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58215575A JPS58215575A (en) | 1983-12-15 |
| JPH0555825B2 true JPH0555825B2 (en) | 1993-08-18 |
Family
ID=14201437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9778482A Granted JPS58215575A (en) | 1982-06-09 | 1982-06-09 | Detector for two-dimensional radioactive ray |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58215575A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4767927A (en) * | 1984-08-16 | 1988-08-30 | Kabushiki Kaisha Toshiba | Apparatus for reading radiation image information stored in imaging plate |
| JPH0776800B2 (en) * | 1987-04-16 | 1995-08-16 | 化成オプトニクス株式会社 | Radiation image conversion panel and radiation image reading method |
| JP2651689B2 (en) * | 1988-01-29 | 1997-09-10 | コニカ株式会社 | Radiation image information recording and reading device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56123000A (en) * | 1980-03-03 | 1981-09-26 | Kogyo Gijutsuin | Radiation recording medium |
-
1982
- 1982-06-09 JP JP9778482A patent/JPS58215575A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58215575A (en) | 1983-12-15 |
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