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1. 发明专利

JP2001296368A FALL-THROUGH EVENT SYSTEM 失效
公开(公告)号：JP2001296368A
公开(公告)日：2001-10-26
申请号：JP2001047343
申请日：2001-02-22
申请人： DIGIRAD
发明人： LINGREN CLINTON L , FRIESENHAHN STANLEY J , BUTLER JACK F , DOTY F PATRICK , ASHBURN WILLIAM L , CONWELL RICHARD L , AUGUSTINE FRANK L , APOTOVSKY BORIS
IPC分类号： G01T3/08 , G01D18/00 , G01J5/20 , G01T1/00 , G01T1/161 , G01T1/164 , G01T1/166 , G01T1/20 , G01T1/24 , G06T1/00 , H01L27/14 , H01L27/146 , H01L31/09 , H04N5/32
摘要： PROBLEM TO BE SOLVED: To provide a semiconductor γ-ray camera and an imaging system which can obtain a lane image and an SPECT image. SOLUTION: The imaging system is disclosed which includes an image head, a signal processor, a data acquisition system, and an image processing computer. The image head includes a detector and an opening for directing radiation to the detector. The detector is equipped with a plurality of closely packed detection modules 206. A detection module 206 is equipped with a plurality of detecting elements. A detecting element is fitted to a circuit carrier. The circuit carrier includes a channel for adjusting and processing electric pulses generated when the detecting element absorbs radiation. The amplitude of the pulses shows the intensity of the absorbed radiation. the detection module finds only an effective event, i.e., a detecting element which has a stored amplitude exceeding a predetermined threshold by using a fall-through circuit.

2. 发明专利

JP2001296369A SIGNAL PROCESSING APPARATUS, CIRCUIT AND METHOD FOR SIGNAL NORMALIZATION, AND ELECTRIC PULSE NORMALIZING METHOD 失效
公开(公告)号：JP2001296369A
公开(公告)日：2001-10-26
申请号：JP2001047351
申请日：2001-02-22
申请人： DIGIRAD
发明人： LINGREN CLINTON L , FRIESENHAHN STANLEY J , BUTLER JACK F , DOTY F PATRICK , ASHBURN WILLIAM L , CONWELL RICHARD L , AUGUSTINE FRANK L , APOTOVSKY BORIS
IPC分类号： G01T3/08 , G01D18/00 , G01J5/20 , G01T1/00 , G01T1/161 , G01T1/164 , G01T1/166 , G01T1/20 , G01T1/24 , G06T1/00 , H01L27/14 , H01L27/146 , H01L31/09 , H04N5/32
摘要： PROBLEM TO BE SOLVED: To provide an improved device, circuit, and method for constituting an image corresponding to the three-dimensional distribution of radiation sources. SOLUTION: An imaging system is disclosed which includes an image head, a signal processor, a data acquisition system, and an image processing computer. The image head includes a detector and an opening for directing radiation to the detector. The detector is equipped with a plurality of detecting modules 206. The detection modules 206 are equipped with a plurality of detecting elements 212. The detecting elements 212 are fitted to a circuit carrier 214. The circuit carrier 214 includes a channel for adjusting and processing electric pulses generated when the detecting elements absorb the radiation. The amplitude of the pulses indicates the intensity of the absorbed radiation. The detection module finds only an effective event, i.e., the detecting elements having a stored amplitude exceeding a predetermined threshold by using a fall-through circuit.

3. 发明专利

JP2001318151A ELECTRONIC CIRCUIT 失效
公开(公告)号：JP2001318151A
公开(公告)日：2001-11-16
申请号：JP2001047340
申请日：2001-02-22
申请人： DIGIRAD
发明人： LINGREN CLINTON L , FRIESENHAHN STANLEY J , BUTLER JACK F , DOTY F PATRICK , ASHBURN WILLIAM L , CONWELL RICHARD L , AUGUSTINE FRANK L , APOTOVSKY BORIS
IPC分类号： G01T3/08 , G01D18/00 , G01J5/20 , G01T1/00 , G01T1/161 , G01T1/164 , G01T1/166 , G01T1/20 , G01T1/24 , G06T1/00 , H01L27/14 , H01L27/146 , H01L31/09 , H04N5/32 , H04N5/335
摘要： PROBLEM TO BE SOLVED: To provide an imaging system which includes the image head of a semiconductor gamma camera replacing an Angerscintillation camera, a signal processor, a data gathering system, and an image processing computer. SOLUTION: The image head includes a detector 200 and an opening 205 which directs radiation to the detector. The detector is equipped with high- density mounted detection modules 206. Each detection module is equipped with a plurality of detecting elements. Each detecting element is fitted to a circuit carrier. The circuit carrier includes a channel for adjusting and processing electric pulses generated when the detecting elements absorb radiation. The amplitude of a pulse shows the intensity of the radiation. A detection module finds only an effective event, i.e., a detecting element having a stored amplitude exceeding a predetermined threshold by using a fall-through circuit.

4. 发明专利

CA2208576A1 SEMICONDUCTOR GAMMA-RAY CAMERA AND MEDICAL IMAGING SYSTEM 未知
公开(公告)号：CA2208576A1
公开(公告)日：1996-07-04
申请号：CA2208576
申请日：1995-12-21
申请人： DIGIRAD
发明人： FRIESENHAHN STANLEY J , APOTOVSKY BORIS , AUGUSTINE FRANK L , ASHBURN WILLIAM L , DOTY F PATRICK , LINGREN CLINTON L , CONWELL RICHARD L , BUTLER JACK F
IPC分类号： G01T3/08 , G01D18/00 , G01J5/20 , G01T1/00 , G01T1/161 , G01T1/164 , G01T1/166 , G01T1/20 , G01T1/24 , G06T1/00 , H01L27/14 , H01L27/146 , H01L31/09 , H04N5/32 , G03B42/00 , H01L31/0296 , A61B6/03 , H01L25/03 , G01T1/29 , G01T1/36
摘要： An imaging system including an imaging head, a signal processor, a data acquisition system, and an image processing computer is disclosed. The imaging head includes a detector and an aperture for directing the radiation to the detector. The detector comprises a plurality of closely-packed detection modules (206) comprising a plurality of detection elements (212) mounted to a circuit carrier (214) which includes channels for conditioning and preprocessing the electrical pulses produced when a detection element absorbs radiation. The amplitude of the pulse is indicative of the magnitude of the radiation absorbed. The detection modules employ a fall-through circuit to automatically find valid events, i.e., only those detection elements having a stored amplitude exceeding a predetermined threshold.

5. 发明专利

DE69534284D1 未知
公开(公告)号：DE69534284D1
公开(公告)日：2005-07-21
申请号：DE69534284
申请日：1995-12-21
申请人： DIGIRAD SAN DIEGO
发明人： LINGREN L , FRIESENHAHN J , BUTLER F , DOTY PATRICK , ASHBURN L , CONWELL L , AUGUSTINE L , APOTOVSKY BORIS
IPC分类号： G01T3/08 , G01D18/00 , G01J5/20 , G01T1/00 , G01T1/161 , G01T1/164 , G01T1/166 , G01T1/20 , G01T1/24 , G06T1/00 , H01L27/14 , H01L27/146 , H01L31/09 , H04N5/32 , H01L31/00 , H01L25/00
摘要： The nuclear imaging system includes an imaging detector close to a collimator. The imaging detector includes several detection modules, each with several elements in. The detections elements produce electrical pulses of amplitude indicative of a magnitude of radiation absorbed from photons of x-ray or gamma ray radiation. The pulses are conditioned so as to provide low noise amplification and shaping. The shaped pulses are processed so as to identify valid events using amplitude discrimination. A voltage representation of incident photon energy magnitude is stored. Valid event addresses are generated.

6. 发明专利

DE69534284T2 未知
公开(公告)号：DE69534284T2
公开(公告)日：2006-03-23
申请号：DE69534284
申请日：1995-12-21
申请人： DIGIRAD CORP
发明人： LINGREN L , FRIESENHAHN J , BUTLER F , DOTY PATRICK , ASHBURN L , CONWELL L , AUGUSTINE L , APOTOVSKY BORIS
IPC分类号： G01T1/20 , G01T3/08 , G01D18/00 , G01J5/20 , G01T1/00 , G01T1/161 , G01T1/164 , G01T1/166 , G01T1/24 , G06T1/00 , H01L25/00 , H01L27/14 , H01L27/146 , H01L31/00 , H01L31/09 , H04N5/32
摘要： The nuclear imaging system includes an imaging detector close to a collimator. The imaging detector includes several detection modules, each with several elements in. The detections elements produce electrical pulses of amplitude indicative of a magnitude of radiation absorbed from photons of x-ray or gamma ray radiation. The pulses are conditioned so as to provide low noise amplification and shaping. The shaped pulses are processed so as to identify valid events using amplitude discrimination. A voltage representation of incident photon energy magnitude is stored. Valid event addresses are generated.

7. 发明专利

MX9704632A CAMARA SEMICONDUCTORA DE RAYOS GAMA Y SISTEMA MEDICO DE FORMACION DE IMAGENES. 未知
公开(公告)号：MX9704632A
公开(公告)日：1998-02-28
申请号：MX9704632
申请日：1995-12-21
申请人： DIGIRAD
发明人： LINGREN CLINTON L , FRIESENHAHN STANLEY J , BUTLER JACK F , DOTY PATRICK F , ASHBURN WILLIAM L , CONWELL RICHARD L , AUGUSTINE FRANK L , APOTOVSKY BORIS
IPC分类号： G01T3/08 , G01D18/00 , G01J5/20 , G01T1/00 , G01T1/161 , G01T1/164 , G01T1/166 , G01T1/20 , G01T1/24 , G06T1/00 , H01L27/14 , H01L27/146 , H01L31/09 , H04N5/32 , G01T01/20 , G01T01/161 , G01T01/24 , H01L31/00 , H01L25/00
摘要： Se divulga un sistema de formacion de imágenes que incluye una cabeza de formacion de imágenes, un procesador de señales, un sistema de adquisicion de datos, y un computador de procesamiento de imágenes. La cabeza de formacion de imágenes incluye un detector y una apertura para dirigir la radiacion al detector. El detector comprende una pluralidad de modulos de deteccion empacados estrechamente (206) que comprende una pluralidad de elementos de deteccion (212) montados en un portador de circuito (214), el cual incluye canales para adicionar y pre-procesar los pulsos eléctricos producidos cuando un elemento de deteccion absorbe radiacion. La amplitud del pulso es indicativa de la magnitud de la radiacion absorbida. Los modulos de deteccion emplean un circuito de caída transversal para encontrar automáticamente eventos válidos, es decir solo aquellos elementos de deteccion que tienen una amplitud almacenada que excede un umbral predeterminado.

8. 发明专利

BR9510290A 未知
公开(公告)号：BR9510290A
公开(公告)日：1997-11-11
申请号：BR9510290
申请日：1995-12-21
申请人： DIGIRAD
发明人： LINGREN CLINTON L , FRIESENHAHN STANLEY J , BUTLER JACK F , DOTY F PATRICK , ASHBURN WILLIAM L , CONWELL RICHARD L , AUGUSTINE FRANK L , APOTOVSKY BORIS
IPC分类号： G01T3/08 , G01D18/00 , G01J5/20 , G01T1/00 , G01T1/161 , G01T1/164 , G01T1/166 , G01T1/20 , G01T1/24 , G06T1/00 , H01L27/14 , H01L27/146 , H01L31/09 , H04N5/32 , H01L31/00 , H01L25/00
摘要： The nuclear imaging system includes an imaging detector close to a collimator. The imaging detector includes several detection modules, each with several elements in. The detections elements produce electrical pulses of amplitude indicative of a magnitude of radiation absorbed from photons of x-ray or gamma ray radiation. The pulses are conditioned so as to provide low noise amplification and shaping. The shaped pulses are processed so as to identify valid events using amplitude discrimination. A voltage representation of incident photon energy magnitude is stored. Valid event addresses are generated.

9. 发明公开

EP0937266A4 SEMICONDUCTOR RADIATION DETECTOR WITH ENHANCED CHARGE COLLECTION 失效
标题翻译： UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG
公开(公告)号：EP0937266A4
公开(公告)日：2002-10-16
申请号：EP96934038
申请日：1996-10-04
申请人： DIGIRAD INC
发明人： APOTOVSKY BORIS , LINGREN CLINTON L , OGANESYAN ASHOT , PI BO , BUTLER JACK F , DOTY F PATRICK , CONWELL RICHARD L , FRIESENHAHN STANLEY J
IPC分类号： G01T1/24 , H01L27/146 , H01L31/09
CPC分类号： H01L27/14676 , G01T1/241
摘要： A radiation detector for detecting ionizing radiation. The detector includes a semiconductor (502) having at least two sides. A bias electrode (504) is formed on one side of the semiconductor (502). A signal electrode (506) is formed on a side of the semiconductor (502) and is used to detect the energy level of the ionizing radiation. A third electrode (508) (the control electrode) is also formed on the semiconductor (502). The control electrode (508) shares charges induced by the ionizing radiation with the signal electrode (506), until the charge clouds are close to the signal electrode (506). The control electrode (508) also alters the electric field (518) within the semiconductor (502), such that the field guides the charge clouds toward the signal electrode (506) when the clouds closely approach the signal electrode (506). As a result, trapping of charge carrying radiation (i.e., electrons or holes) is minimized, and low-energy tailing is virtually eliminated.
摘要翻译：一种用于检测电离辐射的辐射检测器。检测器包括具有至少两个侧面的半导体。偏置电极形成在半导体的一侧。信号电极形成在半导体的一侧，用于检测电离辐射的能级。第三电极（控制电极）也形成在半导体上。控制电极与信号电极共享由电离辐射引起的电荷，直到电荷云接近信号电极。控制电极还改变半导体内的电场，使得当云接近信号电极时，该场将电荷云引向信号电极。结果，电荷携带辐射（即电子或空穴）的捕获被最小化，并且实际上消除了低能量尾矿。

10. 发明公开

EP0871902A4 SEMICONDUCTOR GAMMA-RAY CAMERA AND MEDICAL IMAGING SYSTEM 失效
标题翻译：半导体γ辐射相机，医疗成像系统
公开(公告)号：EP0871902A4
公开(公告)日：1999-12-15
申请号：EP95944400
申请日：1995-12-21
申请人： DIGIRAD
发明人： LINGREN CLINTON L , FRIESENHAHN STANLEY J , BUTLER JACK F , DOTY F PATRICK , ASHBURN WILLIAM L , CONWELL RICHARD L , AUGUSTINE FRANK L , APOTOVSKY BORIS
IPC分类号： G01T3/08 , G01D18/00 , G01J5/20 , G01T1/00 , G01T1/161 , G01T1/164 , G01T1/166 , G01T1/20 , G01T1/24 , G06T1/00 , H01L27/14 , H01L27/146 , H01L31/09 , H04N5/32 , H01L25/00 , H01L31/00
CPC分类号： G01T1/161 , A61B6/037 , A61B6/4258 , G01T1/1642 , G01T1/2018 , G01T1/243 , G01T1/247 , H01L27/146 , H01L27/14658 , H01L27/14676 , H04N5/32
摘要： An imaging system including an imaging head, a signal processor, a data acquisition system, and an image processing computer is disclosed. The imaging head includes a detector and an aperture for directing the radiation to the detector. The detector comprises a plurality of closely-packed detection modules (206) comprising a plurality of detection elements (212) mounted to a circuit carrier (214) which includes channels for conditioning and preprocessing the electrical pulses produced when a detection element absorbs radiation. The amplitude of the pulse is indicative of the magnitude of the radiation absorbed. The detection modules employ a fall-through circuit to automatically find valid events, i.e., only those detection elements having a stored amplitude exceeding a predetermined threshold.

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