JP5809641B2 - ピクセル型固体放射線フォトン検出器の電荷分布を制御する方法 - Google Patents
ピクセル型固体放射線フォトン検出器の電荷分布を制御する方法 Download PDFInfo
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- JP5809641B2 JP5809641B2 JP2012547073A JP2012547073A JP5809641B2 JP 5809641 B2 JP5809641 B2 JP 5809641B2 JP 2012547073 A JP2012547073 A JP 2012547073A JP 2012547073 A JP2012547073 A JP 2012547073A JP 5809641 B2 JP5809641 B2 JP 5809641B2
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- 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
- G01T1/24—Measuring radiation intensity with semiconductor detectors
- G01T1/241—Electrode arrangements, e.g. continuous or parallel strips or the like
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- 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
- G01T1/24—Measuring radiation intensity with semiconductor detectors
- G01T1/249—Measuring radiation intensity with semiconductor detectors specially adapted for use in SPECT or PET
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/29—Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
- G01T1/2914—Measurement of spatial distribution of radiation
- G01T1/2921—Static instruments for imaging the distribution of radioactivity in one or two dimensions; Radio-isotope cameras
- G01T1/2928—Static instruments for imaging the distribution of radioactivity in one or two dimensions; Radio-isotope cameras using solid state detectors
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- 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)
- Measurement Of Radiation (AREA)
- Solid State Image Pick-Up Elements (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
式中、
x1(2,3,…)は第一(第二、…)列のx位置であり、
sx1(2,3,…)は第一(第二、…)列において測定される信号である(作動させられなかったチャネルについては「0」)。
32:基材
34:陽極
36:電荷相互作用
38:陰極
40:ピクセル型検出器の複数のピクセル型素子の間での電荷分布を制御する方法
50:小ピクセル型検出器
52:結晶
54:面
56:陰極
58:裏面
60:陽極
62:陽極ピクセル
63:小ピクセル
64:検出器底面
66:接続ピン
70:矩形ガンマ・カメラ
72:マザー・ボード
74:陽極ピクセル
76:重なり領域
80:ピクセル型検出器との電荷相互作用の位置を決定する方法
90(図5):方向制御グリッド
100:陽極ピクセル
102、104:電気的接続
110:電子雲
120:1行置きの行
130:抵抗陽極
140:陰極ピクセル
142、144:信号
150:サンドイッチ型検出器
152:共通陰極
154、156:基材層
158、160:ピクセル型陽極
170:多層十字片型検出器
172:基材層
174:陽極
176:陰極
210:医用イメージング・システム
212:一体型ガントリ
214:ロータ
218:NMピクセル型カメラ
219:検査軸
220:患者テーブル
222:寝台
224:寝台支持システム
226:台
228:ストレッチャ
230:上面
232:ガントリ中孔
250:イメージング・システム
252、254:ピクセル型撮像用検出器
256:ガントリ
258:患者
260:中孔
262:患者テーブル
264:制御器ユニット
264:テーブル制御器
266:ガントリ・モータ制御器
268:処理ユニット
270:データ取得システム(DAS)
272:画像再構成プロセッサ
274:データ記憶装置
276:入力装置
278:表示器
280:電荷位置決定モジュール
Claims (10)
- ピクセル型固体放射線フォトン検出器の電荷分布を制御する方法であって、
ピクセル型固体放射線フォトン検出器に、少なくとも2個の陽極ピクセルが電荷を共有し、電荷分布が前記少なくとも2個の陽極ピクセルにより検出されるように、隣り合った陽極ピクセルの間に重なり領域を有する鋸歯型で複数の陽極ピクセルを配置するステップと、
前記少なくとも2個の陽極ピクセルから電荷情報を得るステップと、
前記得られた電荷共有情報に基づいて前記電荷分布の前記複数の陽極ピクセルとの相互作用の位置を決定するステップと
を備えた方法。 - 前記電荷分布は電子電荷雲により画定され、該電子電荷雲よりも小さい寸法を有するように前記複数の陽極ピクセルを構成するステップをさらに含んでいる請求項1に記載の方法。
- 位置を決定する前記ステップは、前記位置を決定するために重心計算を用いることを含んでおり、該重心計算は一次ピクセル及び少なくとも1個の隣接陽極ピクセルからの電荷情報を用いる、請求項1または2に記載の方法。
- 前記複数の陽極ピクセルは行及び列に分割される請求項1乃至3のいずれかに記載の方法。
- 前記複数の陽極ピクセルに関連する複数のチャネルのエネルギ出力を加算することにより、検出された放射線フォトンのエネルギを決定するステップをさらに含んでいる請求項1乃至4のいずれかに記載の方法。
- 複数の陰極ピクセルを設けることを含む、請求項1乃至5のいずれかに記載の方法。
- 前記ピクセル型固体放射線フォトン検出器の陽極信号と陰極信号との間の飛行時間差に基づく時間を用いて相互作用深さを決定するステップをさらに含んでいる請求項1乃至6のいずれかに記載の方法。
- 前記決定された位置に基づいて前記複数の陽極ピクセルの補正ファクタを決定するステップをさらに含んでいる請求項1乃至7のいずれかに記載の方法。
- 陽極ピクセル・アレイの複数の行及び列の各々の交互の陽極ピクセルが接続されるように、前記複数の陽極ピクセルを相互接続するステップをさらに含んでいる請求項1乃至8のいずれかに記載の方法。
- 複数のピクセル型陽極を有する2層ピクセル型固体放射線フォトン検出器を設けるステップをさらに含んでいる請求項1乃至9のいずれかに記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/649,987 US8405038B2 (en) | 2009-12-30 | 2009-12-30 | Systems and methods for providing a shared charge in pixelated image detectors |
US12/649,987 | 2009-12-30 | ||
PCT/US2010/055353 WO2011090530A2 (en) | 2009-12-30 | 2010-11-04 | Systems and methods for providing a shared charge in pixelated image detectors |
Publications (3)
Publication Number | Publication Date |
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JP2013516609A JP2013516609A (ja) | 2013-05-13 |
JP2013516609A5 JP2013516609A5 (ja) | 2013-12-19 |
JP5809641B2 true JP5809641B2 (ja) | 2015-11-11 |
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Application Number | Title | Priority Date | Filing Date |
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JP2012547073A Expired - Fee Related JP5809641B2 (ja) | 2009-12-30 | 2010-11-04 | ピクセル型固体放射線フォトン検出器の電荷分布を制御する方法 |
Country Status (5)
Country | Link |
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US (2) | US8405038B2 (ja) |
JP (1) | JP5809641B2 (ja) |
CN (2) | CN102782524B (ja) |
CA (1) | CA2785891C (ja) |
WO (1) | WO2011090530A2 (ja) |
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-
2009
- 2009-12-30 US US12/649,987 patent/US8405038B2/en not_active Expired - Fee Related
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2010
- 2010-11-04 WO PCT/US2010/055353 patent/WO2011090530A2/en active Application Filing
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- 2010-11-04 CN CN201080064934.1A patent/CN102782524B/zh not_active Expired - Fee Related
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US20110155918A1 (en) | 2011-06-30 |
US8405038B2 (en) | 2013-03-26 |
CN104977600A (zh) | 2015-10-14 |
US8586937B2 (en) | 2013-11-19 |
CA2785891C (en) | 2018-07-03 |
CA2785891A1 (en) | 2011-07-28 |
JP2013516609A (ja) | 2013-05-13 |
WO2011090530A2 (en) | 2011-07-28 |
US20130193337A1 (en) | 2013-08-01 |
CN102782524A (zh) | 2012-11-14 |
CN102782524B (zh) | 2015-08-26 |
CN104977600B (zh) | 2018-03-13 |
WO2011090530A3 (en) | 2012-01-05 |
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