JPH07148148A - Two-dimensional array shaped radiation detector for x-ray ct apparatus - Google Patents
Two-dimensional array shaped radiation detector for x-ray ct apparatusInfo
- Publication number
- JPH07148148A JPH07148148A JP5297840A JP29784093A JPH07148148A JP H07148148 A JPH07148148 A JP H07148148A JP 5297840 A JP5297840 A JP 5297840A JP 29784093 A JP29784093 A JP 29784093A JP H07148148 A JPH07148148 A JP H07148148A
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- Japan
- Prior art keywords
- ray
- radiation detector
- dimensional array
- light
- array type
- 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
- 230000005855 radiation Effects 0.000 title claims abstract description 25
- 238000005192 partition Methods 0.000 claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000002591 computed tomography Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Landscapes
- Measurement Of Radiation (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、複数のＸ線検出素子が
２次元状に配置されるＸ線コンピュータトモグラフィ装
置（以下「Ｘ線ＣＴ装置」と略す）に用いられる２次元
アレイ型放射線検出器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-dimensional array type radiation used in an X-ray computer tomography apparatus (hereinafter abbreviated as "X-ray CT apparatus") in which a plurality of X-ray detecting elements are arranged two-dimensionally. Regarding the detector.
【０００２】[0002]
【従来の技術】Ｘ線検出素子をチャンネル方向だけでな
くそれに直交するスライス方向にも配列した２次元アレ
イ型放射線検出器はコーンビームＸ線管と併用されて微
小なスライスピッチのマルチスライスデータを短時間の
うちに収集するものと早期実用化が期待されている。2. Description of the Related Art A two-dimensional array type radiation detector in which X-ray detecting elements are arranged not only in the channel direction but also in the slice direction orthogonal to the channel direction is used in combination with a cone beam X-ray tube to obtain multi-slice data with a minute slice pitch. It is expected that data will be collected in a short time and that it will be put to practical use as soon as possible.
【０００３】しかし、２次元アレイ型放射線検出器には
従来から一般的な１次元放射線検出器にはない製造上の
課題がある。それはＸ線検出素子、特に微小なシンチレ
ータブロックを２次元状に配列するためそのアライメン
トに誤差が生じやすいことであり、２次元状に配列した
シンチレータとコリメータとの位置整合誤差が生じやす
いことであり、チャンネル間のクロストークに対して１
次元放射線検出器の場合のチャンネル方向だけでなくそ
れに直交するスライス方向にも対策を講じなければなら
ないことである。また、これは１次元放射線検出器にも
言えることであるが、シンチレータ内での光拡散によっ
てシンチレータ閃光の大部分がフォトダイオードに到達
しないために、Ｘ線検出素子のＸ線に対する実効的な感
度が低くなることである。However, the two-dimensional array type radiation detector has a manufacturing problem which is not present in the conventional one-dimensional radiation detector. This is because an X-ray detection element, particularly a minute scintillator block, is arranged two-dimensionally, so that an error is likely to occur in its alignment, and a position alignment error between the scintillator and the collimator arranged two-dimensionally is likely to occur. , 1 for crosstalk between channels
It is necessary to take measures not only in the channel direction in the case of the two-dimensional radiation detector but also in the slice direction orthogonal to the channel direction. This is also true for the one-dimensional radiation detector, but since most of the scintillator flash does not reach the photodiode due to light diffusion in the scintillator, the effective sensitivity of the X-ray detection element to X-rays is high. Is to be low.
【０００４】[0004]
【発明が解決しようとする課題】本発明の目的は、２次
元状に配置されるＸ線検出素子のアライメント誤差を軽
減し、チャンネル間のクロストークを防止できるＸ線Ｃ
Ｔ装置用の２次元アレイ型放射線検出器を提供すること
である。SUMMARY OF THE INVENTION An object of the present invention is to reduce the alignment error of the two-dimensionally arranged X-ray detecting elements and prevent crosstalk between channels.
A two-dimensional array type radiation detector for a T-apparatus.
【０００５】[0005]
【課題を解決するための手段】本発明によるＸ線ＣＴ装
置用の２次元アレイ型放射線検出器は、Ｘ線管からのＸ
線に沿って設けられたＸ線及び光を透過しない仕切板で
直交２方向に所定のピッチで２次元状に仕切られた複数
の枠各々にＸ線検出素子が挿入されてなることを特徴と
する。A two-dimensional array type radiation detector for an X-ray CT apparatus according to the present invention includes an X-ray from an X-ray tube.
An X-ray detection element is inserted in each of a plurality of frames that are two-dimensionally partitioned at a predetermined pitch in two orthogonal directions by a partition plate that does not transmit X-rays and light provided along the line. To do.
【０００６】[0006]
【作用】本発明によれば、Ｘ線検出素子を予め仕切板で
直交２方向に所定のピッチで仕切られている複数の枠各
々に挿入することによりＸ線検出素子を２次元状に配置
することができるので、Ｘ線検出素子のアライメント誤
差が軽減され、また仕切板はＸ線及び光を透過しないの
でチャンネル間のクロストークが防止される。According to the present invention, the X-ray detecting element is two-dimensionally arranged by inserting the X-ray detecting element into each of a plurality of frames which are partitioned by a partition plate in two orthogonal directions at a predetermined pitch. Therefore, the alignment error of the X-ray detection element is reduced, and since the partition plate does not transmit X-rays and light, crosstalk between channels is prevented.
【０００７】[0007]
【実施例】以下、図面を参照しながら実施例を説明す
る。主に第３世代のＸ線ＣＴ装置に用いられるべき２次
元アレイ型放射線検出器は複数のＸ線検出素子を理想的
にはＸ線管から全て等距離であって、チャンネル方向及
びそれに直交するスライス方向に所定のピッチで配列し
たものであり、コーンビームＸ線管と併用され、１回の
Ｘ線曝射で多チャンネル方向の信号（投影データ）をマ
ルチスライスで収集するものである。Embodiments will be described below with reference to the drawings. A two-dimensional array type radiation detector, which should be mainly used in a third-generation X-ray CT apparatus, has a plurality of X-ray detection elements ideally all equidistant from the X-ray tube and orthogonal to the channel direction. It is arranged in a slice direction at a predetermined pitch and is used together with a cone-beam X-ray tube to collect signals (projection data) in multiple channels in multiple slices by one X-ray exposure.
【０００８】本実施例に係る２次元アレイ型放射線検出
器の構成をその製造工程に沿って説明する。図１は本実
施例に係る２次元アレイ型放射線検出器の枠組の外観図
である。枠組１の外枠２内には、チャンネル方向及びそ
れに直交するスライス方向それぞれに所定のピッチで複
数の枠４が、Ｘ線及び光を透過しないＷやＭｏ等の金属
製の仕切板３で仕切られている。全ての仕切板３は図示
しないＸ線管からのＸ線の照射方向を想定して、それぞ
れ照射されるＸ線に沿って異なる角度で設けられる。ま
た全ての仕切板３の高さは、Ｘ線検出素子の側面高より
高く設定される。The structure of the two-dimensional array type radiation detector according to this embodiment will be described along with its manufacturing process. FIG. 1 is an external view of a framework of a two-dimensional array type radiation detector according to this embodiment. In the outer frame 2 of the frame 1, a plurality of frames 4 are separated by a metal partition plate 3 such as W or Mo that does not transmit X-rays and light in a predetermined pitch in each of the channel direction and the slice direction orthogonal thereto. Has been. All partition plates 3 are provided at different angles along the X-rays to be irradiated, assuming the irradiation direction of X-rays from an X-ray tube (not shown). The height of all the partition plates 3 is set higher than the side height of the X-ray detection element.
【０００９】全ての枠４は、少なくともＸ線検出素子が
挿入可能なサイズに設定される。複数の枠４はチャンネ
ル方向に、チャンネル方向のＸ線検出素子数と同じ数だ
け、複数のＸ線検出素子のチャンネル方向のピッチと同
じピッチで設けられる。また複数の枠４はスライス方向
に、スライス方向のＸ線検出素子数と同じ数だけ、複数
のＸ線検出素子のスライス方向のピッチと同じピッチで
設けられる。All the frames 4 are set to a size in which at least an X-ray detecting element can be inserted. The plurality of frames 4 are provided in the channel direction in the same number as the number of X-ray detection elements in the channel direction and at the same pitch as the pitch in the channel direction of the plurality of X-ray detection elements. Further, the plurality of frames 4 are provided in the slice direction by the same number as the number of X-ray detection elements in the slice direction and at the same pitch as the pitch in the slice direction of the plurality of X-ray detection elements.
【００１０】このような枠組１を注型やエッチングによ
り一体成型してもよいし、図２（ａ），（ｂ）に示す仕
切板３を井げた状に組み合わせ、その状態で図２（ｃ）
の外枠２の開口部６内に設置するようにして形成しても
よい。仕切板３を井げた状に組み合わせる場合、図２
（ａ）のチャンネル方向に沿って配置されるべき仕切板
３に、複数のＸ線検出素子のチャンネル方向のピッチと
同じピッチでスリット５を設け、図２（ｂ）のスライス
方向に沿って配置されるべき仕切板３に複数のＸ線検出
素子のスライス方向のピッチと同じピッチでスリット５
を設け、両方向の仕切板３を互いにスリット５で嵌合し
て井げた状に組み合わせることが製造効率や製造精度の
点から好ましい。全ての仕切板３の側面には、一体成型
後、または井げた状に組み合わせる前後問わず、光反射
樹脂が塗布され又は光反射フィルムが装着されて光反射
層が形成される。Such a frame 1 may be integrally molded by casting or etching, or the partition plates 3 shown in FIGS. 2 (a) and 2 (b) may be combined in a barbed shape, and in that state, as shown in FIG. 2 (c).
It may be formed so as to be installed in the opening 6 of the outer frame 2. When combining the partition plates 3 in a barbed shape, see FIG.
Slits 5 are provided on the partition plate 3 to be arranged along the channel direction of (a) at the same pitch as the pitch of the plurality of X-ray detection elements in the channel direction, and arranged along the slice direction of FIG. 2 (b). The partition plate 3 to be formed has slits 5 at the same pitch as the pitch in the slice direction of the plurality of X-ray detection elements.
It is preferable from the standpoint of manufacturing efficiency and manufacturing accuracy that the partition plates 3 in both directions are fitted to each other with the slits 5 and combined in a barbed shape. A light reflecting resin is applied or a light reflecting film is attached to the side surfaces of all the partition plates 3 to form a light reflecting layer, regardless of whether they are integrally molded or before and after they are combined in a hollow shape.
【００１１】図３に示すように枠組１の各枠４には、サ
イコロ状のシンチレータブロック７が嵌込まれる。シン
チレータブロック７は、Ｘ線を光に変換するものであ
り、このシンチレータブロック１から出力される光を電
気信号に変換して断層像を再構成するコンピュータ系に
出力するフォトダイオードと共にＸ線検出素子を構成す
る。なお、液状のシンチレータを各枠４に流し込んで、
シンチレータブロック７を構成するようにしてもよい。As shown in FIG. 3, a dice-shaped scintillator block 7 is fitted into each frame 4 of the framework 1. The scintillator block 7 converts X-rays into light. The scintillator block 7 converts the light output from the scintillator block 1 into an electric signal and outputs the electric signal to a computer system for reconstructing a tomographic image. Make up. In addition, pouring a liquid scintillator into each frame 4,
The scintillator block 7 may be configured.
【００１２】このようにして完成した２次元アレイ型放
射線検出器をＸ線管側から見た外観図を図４に示し、図
５に図４のＡ−Ａ´断面図を示す。８は上述した光反射
層であり、９は上述したフォトダイオードである。上述
したように全ての仕切板３の高さはＸ線検出素子、ここ
ではシンチレータブロック７の側面高より高く設定され
ていて、全てのシンチレータブロック７は、その表面よ
り仕切板３がＸ線管側に突出するように枠４に挿入され
嵌合される。この仕切板３はＸ線を透過しない材料で形
成されているので、従来のコリメータ板としての機能を
実効する。これは従来のコリメータ板とＸ線検出素子配
列とを別体で製造し両者を位置整合して合体させる場合
に少なからず生じていた位置整合の誤差が発生する機会
を皆無にする。An external view of the thus completed two-dimensional array type radiation detector as seen from the X-ray tube side is shown in FIG. 4, and FIG. 5 is a sectional view taken along the line AA 'in FIG. Reference numeral 8 is the above-mentioned light reflecting layer, and 9 is the above-mentioned photodiode. As described above, the heights of all the partition plates 3 are set to be higher than the side surface height of the X-ray detecting element, here, the scintillator block 7, and all the scintillator blocks 7 have the partition plates 3 from the surface thereof. The frame 4 is inserted and fitted so as to project to the side. Since the partition plate 3 is formed of a material that does not transmit X-rays, it functions as a conventional collimator plate. This eliminates any chance of occurrence of a positional alignment error which is not a little generated when the conventional collimator plate and the X-ray detection element array are manufactured separately and are aligned and combined.
【００１３】コーンビームＸ線管から曝射されたコーン
ビームＸ線は被検体を透過して全てのシンチレータ７に
略垂直に到達する。略垂直以外の角度でシンチレータブ
ロック７に向かって照射されるＸ線は仕切板３で吸収さ
れ、シンチレータブロック７には到達しない。各シンチ
レータブロック７で変換された光は全方向に放射され
る。従来はこの光の中のフォトダイオード９に直接向か
う一部の光だけを検出するようにしていたので、検出効
率が悪く低感度であった。本発明では、フォトダイオー
ド９に直接向かう一部の光に加えて、仕切板３の光反射
層８で反射した反射光も検出する。したがって従来に比
べ検出効率が向上し、これに伴って感度も向上すること
になる。これに関連して次のような理由により検出効率
及び感度の向上が望める。つまり、従来、フォトダイオ
ード９でより多くの光を検出しようとシンチレータブロ
ック７を薄くしてフォトダイオード９を光源に接近させ
るよう手立てされていたが、シンチレータブロック７を
薄くするとシンチレータブロック７をＸ線が通過してし
まう、つまり光に変換されずにそのまま通過するＸ線量
が増加して、結果的に検出効率が悪く低感度になってい
た。本発明ではＸ線が通過することのない又は従来より
少なくとも通過Ｘ線量を軽減する程度にシンチレータブ
ロック７を厚くしてフォトダイオード９が光源から遠く
なっても、光反射層８での反射によりフォトダイオード
９で検出される光量は、シンチレータブロック７内での
光透過率を無視して考えれば理論的には減少することは
ない。したがってこの観点からも従来に比べ検出効率及
び感度の向上を望める。The cone-beam X-rays emitted from the cone-beam X-ray tube pass through the subject and reach all the scintillators 7 substantially vertically. The X-rays emitted toward the scintillator block 7 at angles other than substantially vertical are absorbed by the partition plate 3 and do not reach the scintillator block 7. The light converted by each scintillator block 7 is emitted in all directions. Conventionally, only a part of the light that goes directly to the photodiode 9 is detected, so the detection efficiency is poor and the sensitivity is low. In the present invention, in addition to a part of the light that directly goes to the photodiode 9, the reflected light reflected by the light reflection layer 8 of the partition plate 3 is also detected. Therefore, the detection efficiency is improved as compared with the conventional one, and the sensitivity is also improved accordingly. In connection with this, improvement in detection efficiency and sensitivity can be expected for the following reasons. That is, conventionally, in order to detect more light with the photodiode 9, it has been made to make the scintillator block 7 thinner and bring the photodiode 9 closer to the light source. However, if the scintillator block 7 is made thin, the scintillator block 7 is exposed to X-rays. Pass through, that is, the amount of X-rays that pass without being converted into light increases, resulting in poor detection efficiency and low sensitivity. In the present invention, even if the scintillator block 7 is made thick enough to prevent X-rays from passing therethrough or at least reduce the passing X-ray dose compared to the conventional case, even if the photodiode 9 is far from the light source, the photo-reflecting layer 8 causes reflection of the light. The light amount detected by the diode 9 does not theoretically decrease if the light transmittance in the scintillator block 7 is ignored. Therefore, from this point of view, it is expected that the detection efficiency and the sensitivity are improved as compared with the conventional case.
【００１４】また、シンチレータブロック７をＸ線を透
過しない仕切板３で少なくとも底面まで分離しているの
で、光に変換されないＸ線が隣のシンチレータブロック
７に突き抜けることによるチャンネル間のクロストーク
は少なくとも解消される。同様に、シンチレータブロッ
ク７を光を透過しない仕切板３で少なくとも底面まで分
離しているので、閃光が隣のシンチレータブロック７を
介して隣のフォトダイオード９に到達しそこで検出され
ることによるチャンネル間のクロストークは少なくとも
解消される。Further, since the scintillator block 7 is separated by the partition plate 3 which does not transmit X-rays to at least the bottom surface, at least crosstalk between channels due to penetration of X-rays which are not converted into light into the adjacent scintillator block 7. Will be resolved. Similarly, since the scintillator block 7 is separated by the partition plate 3 that does not transmit light to at least the bottom surface, the flash light reaches the adjacent photodiode 9 via the adjacent scintillator block 7 and is detected there, so that the inter-channel Crosstalk is eliminated at least.
【００１５】さらに、全てのシンチレータブロック７は
予め形成された枠４それぞれ１つづつ挿入されてアライ
メントされるので、アライメント誤差が発生する可能性
が、従来のように１次元アレイ放射線検出器を多数列接
合するよりも格段に少なく、且つ製造効率も向上する。
本発明はその要旨を逸脱しない限りにおいて種々変形し
て実施可能であるのは勿論である。Further, since all the scintillator blocks 7 are inserted and aligned one by one in each of the preformed frames 4, there is a possibility that an alignment error may occur, and a large number of one-dimensional array radiation detectors are required as in the prior art. Remarkably less than in-line joining, and the manufacturing efficiency is improved.
Needless to say, the present invention can be variously modified and implemented without departing from the scope of the invention.
【００１６】[0016]
【発明の効果】本発明は、予め仕切板で直交２方向に所
定のピッチで仕切られている複数の枠各々にＸ線検出素
子を挿入するようにしてＸ線検出素子のアライメント誤
差を軽減し、またこの仕切板をＸ線及び光を透過しない
材料で形成してチャンネル間のクロストークを防止し得
るＸ線ＣＴ装置用の２次元アレイ型放射線検出器を提供
することができる。The present invention reduces the alignment error of the X-ray detecting element by inserting the X-ray detecting element into each of a plurality of frames which are previously partitioned by the partition plate in the two orthogonal directions at a predetermined pitch. Further, it is possible to provide a two-dimensional array type radiation detector for an X-ray CT apparatus which can prevent crosstalk between channels by forming this partition plate with a material that does not transmit X-rays and light.
【図１】本発明の一実施例に係る２次元アレイ型放射線
検出器の枠組の外観図。FIG. 1 is an external view of a framework of a two-dimensional array type radiation detector according to an embodiment of the present invention.
【図２】図１の枠組の一構成例を説明する図。FIG. 2 is a diagram illustrating an example of the configuration of the framework of FIG.
【図３】図１の枠組にシンチレータブロックを嵌込む工
程を説明する図。FIG. 3 is a diagram illustrating a step of fitting a scintillator block into the framework of FIG.
【図４】完成した本発明の一実施例に係る２次元アレイ
型放射線検出器の外観図。FIG. 4 is an external view of a completed two-dimensional array type radiation detector according to an embodiment of the present invention.
【図５】図４のＡ−Ａ´断面図。5 is a cross-sectional view taken along the line AA ′ of FIG.
１…枠組、２…外枠、３…仕切板、４…枠、５…スリッ
ト、６…開口部、７…シンチレータブロック、８…光反
射層、９…フォトダイオード。DESCRIPTION OF SYMBOLS 1 ... Frame, 2 ... Outer frame, 3 ... Partition plate, 4 ... Frame, 5 ... Slit, 6 ... Opening part, 7 ... Scintillator block, 8 ... Light reflecting layer, 9 ... Photodiode.
Claims (6)
線及び光を透過しない仕切板で直交２方向に所定のピッ
チで２次元状に仕切られた複数の枠各々にＸ線検出素子
が挿入されてなることを特徴とするＸ線ＣＴ装置用の２
次元アレイ型放射線検出器。1. An X provided along an X-ray from an X-ray tube.
An X-ray CT device characterized in that an X-ray detection element is inserted into each of a plurality of frames that are two-dimensionally partitioned at a predetermined pitch in two orthogonal directions by a partition plate that does not transmit rays and light.
Dimensional array type radiation detector.
されることを特徴とする請求項１記載のＸ線ＣＴ装置用
の２次元アレイ型放射線検出器。2. The two-dimensional array type radiation detector for an X-ray CT apparatus according to claim 1, wherein light reflecting layers are formed on both side surfaces of the partition plate.
ら前記Ｘ線管側に突出して形成され前記Ｘ線検出素子に
対するコリメータ板としての機能を奏することを特徴と
する請求項１記載のＸ線ＣＴ装置用の２次元アレイ型放
射線検出器。3. The partition plate is formed so as to project from the surface of the X-ray detection element toward the X-ray tube, and functions as a collimator plate for the X-ray detection element. Two-dimensional array type radiation detector for X-ray CT system.
するシンチレータと前記光を電気信号に変換するフォト
ダイオードとが積層されてなることを特徴とする請求項
１記載のＸ線ＣＴ装置用の２次元アレイ型放射線検出
器。4. The X-ray CT according to claim 1, wherein the X-ray detection element comprises a scintillator for converting the X-ray into light and a photodiode for converting the light into an electric signal. Two-dimensional array type radiation detector for the device.
あって前記枠に嵌込まれてなることを特徴とする請求項
４記載のＸ線ＣＴ装置用の２次元アレイ型放射線検出
器。5. The two-dimensional array type radiation detector for an X-ray CT apparatus according to claim 4, wherein the scintillator is a solid scintillator and is fitted in the frame.
あって前記枠に流し込まれてなることを特徴とする請求
項４記載のＸ線ＣＴ装置用の２次元アレイ型放射線検出
器。6. The two-dimensional array type radiation detector for an X-ray CT apparatus according to claim 4, wherein the scintillator is a liquid scintillator and is poured into the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5297840A JPH07148148A (en) | 1993-11-29 | 1993-11-29 | Two-dimensional array shaped radiation detector for x-ray ct apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5297840A JPH07148148A (en) | 1993-11-29 | 1993-11-29 | Two-dimensional array shaped radiation detector for x-ray ct apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07148148A true JPH07148148A (en) | 1995-06-13 |
Family
ID=17851838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5297840A Pending JPH07148148A (en) | 1993-11-29 | 1993-11-29 | Two-dimensional array shaped radiation detector for x-ray ct apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07148148A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11231062A (en) * | 1997-11-26 | 1999-08-27 | General Electric Co <Ge> | Photodiode array for scalable multi-slice scanning computer-operated tomographic system |
| JP2005508504A (en) * | 2001-11-02 | 2005-03-31 | バリアン・メディカル・システムズ・テクノロジーズ・インコーポレイテッド | X-ray image acquisition device |
| JP2006242812A (en) * | 2005-03-04 | 2006-09-14 | Toshiba It & Control Systems Corp | Tr type computerized tomographic apparatus and radiation detector |
| JP2009031304A (en) * | 2008-09-22 | 2009-02-12 | Shimadzu Corp | Manufacturing method of radiation detector |
| JP2010175570A (en) * | 2010-05-17 | 2010-08-12 | Japan Atomic Energy Agency | Two-dimensional radiation and neutron image sensor |
-
1993
- 1993-11-29 JP JP5297840A patent/JPH07148148A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11231062A (en) * | 1997-11-26 | 1999-08-27 | General Electric Co <Ge> | Photodiode array for scalable multi-slice scanning computer-operated tomographic system |
| JP2005508504A (en) * | 2001-11-02 | 2005-03-31 | バリアン・メディカル・システムズ・テクノロジーズ・インコーポレイテッド | X-ray image acquisition device |
| JP2006242812A (en) * | 2005-03-04 | 2006-09-14 | Toshiba It & Control Systems Corp | Tr type computerized tomographic apparatus and radiation detector |
| JP4699780B2 (en) * | 2005-03-04 | 2011-06-15 | 東芝Ｉｔコントロールシステム株式会社 | TR type computed tomography apparatus and radiation detection apparatus |
| JP2009031304A (en) * | 2008-09-22 | 2009-02-12 | Shimadzu Corp | Manufacturing method of radiation detector |
| JP4502056B2 (en) * | 2008-09-22 | 2010-07-14 | 株式会社島津製作所 | Manufacturing method of radiation detector |
| JP2010175570A (en) * | 2010-05-17 | 2010-08-12 | Japan Atomic Energy Agency | Two-dimensional radiation and neutron image sensor |
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