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公开(公告)号：FR2885728B1
公开(公告)日：2019-01-25
申请号：FR0604124
申请日：2006-05-10
Applicant: GEN ELECTRIC
Inventor： ALBAGLI DOUGLAS , XUE PING
Abstract: Il est proposé des systèmes, des procédés et des dispositifs par lesquels un collimateur (102) possède une ou plusieurs caractéristiques physiques variables (104) qui ont pour effet de faire varier l'absorption d'énergie électromagnétique (106) depuis une faible ampleur d'absorption sur un bord antérieur (212) jusqu'à la même ampleur d'absorption que le reste du collimateur. Dans certaines formes de réalisation, le collimateur a un tranchant conique (212). La variabilité de l'absorption de l'énergie électromagnétique en différents points le long du collimateur réduit les brusques transitions de projection de l'énergie électromagnétique sur un détecteur d'énergie électromagnétique, en réduisant de ce fait les artefacts constituant des erreurs sur une image générée par le détecteur.
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公开(公告)号：FR2965399A1
公开(公告)日：2012-03-30
申请号：FR1158260
申请日：2011-09-16
Applicant: GEN ELECTRIC
Inventor： GRANFORS PAUL RICHARD , LAMBERTY JOHN ROBERT , CRONCE RICHARD GORDON , XUE PING , SCHAEPKENS MARC , COUTURE AARON JUDY , ALBAGLI DOUGLAS
IPC: H01L27/146 , G03B42/02 , H04N5/32
Abstract: Détecteur numérique de rayons X comprenant une pluralité de zones de pixels (54). Chaque zone de pixel (54) comporte une première photodiode (86) ayant une première superficie (116) et une seconde photodiode (88) ayant une seconde superficie (122) égale ou inférieure à la première superficie (116). Le détecteur numérique de rayons X comprend également une structure de blindage (94) disposée au-dessus des première (86) et seconde (88) photodiodes de chaque zone de pixel (54), la structure de blindage (94) isolant proportionnellement une plus petite partie de la première photodiode (86) que de la seconde photodiode (88) afin de doter la première photodiode (86) d'une première sensibilité et la seconde photodiode (88) d'une seconde sensibilité inférieure à la première sensibilité.
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公开(公告)号：DE60045209D1
公开(公告)日：2010-12-23
申请号：DE60045209
申请日：2000-08-21
Applicant: GEN ELECTRIC
Inventor： ALBAGLI DOUGLAS
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公开(公告)号：FR2884053B1
公开(公告)日：2009-10-16
申请号：FR0602783
申请日：2006-03-30
Applicant: GEN ELECTRIC
Inventor： ALBAGLI DOUGLAS , HENNESSY WILLIAM ANDREW
IPC: H01L29/786 , H01L27/146 , H01L31/119
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公开(公告)号：DE102006023032A1
公开(公告)日：2006-11-16
申请号：DE102006023032
申请日：2006-05-10
Applicant: GEN ELECTRIC
Inventor： ALBAGLI DOUGLAS , XUE PING
Abstract: Systems, methods and apparatus are provided through which a collimator has one or more varying physical characteristics that have the effect of varying the absorption of electromagnetic energy from a low extent of absorption at a leading edge to the same extent of absorption as the remainder of the collimator. In some embodiments, the collimator has a tapered knife-edge. The varying absorption of electromagnetic energy at different points along the collimator reduce abrupt transitions of projection of the electromagnetic energy onto an electromagnetic energy detector, thereby reducing erroneous artifacts in an image generated by the detector.
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Patent Agency Ranking
公开(公告)号：DE102004050179A1
公开(公告)日：2005-06-02
申请号：DE102004050179
申请日：2004-10-14
Applicant: GEN ELECTRIC
Inventor： LEE JI-UNG , ALBAGLI DOUGLAS , POSSIN GEORGE EDWARD , HENNESSY WILLIAM ANDREW , WEI CHING-YEU
Abstract: Storage capacitor design for a solid state imager. The imager includes several pixels disposed on a substrate in an imaging array pattern. Each pixel includes a photosensor coupled to a thin film switching transistor. Several scan lines are disposed at a first level with respect to the substrate along a first axis and several data lines are disposed at a second level along a second axis of the imaging array. Several data lines disposed at a second level with respect to the substrate along a second axis of the imaging array pattern. Each pixel comprises a storage capacitor coupled parallel to the photosensor, the storage capacitor comprising a storage capacitor electrode and a capacitor common electrode.
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公开(公告)号：DE10358835A1
公开(公告)日：2004-08-19
申请号：DE10358835
申请日：2003-12-16
Applicant: GEN ELECTRIC
Inventor： DHAWALE PARITOSH JAYANT , ALBAGLI DOUGLAS
IPC: A61B6/00 , G01D18/00 , G01T1/36 , G06T1/00 , G06T5/00 , G06T5/40 , H04N5/32 , H05G1/30 , H05G1/64
Abstract: A technique is provided in which a gain correction map derived for a detector at one X-ray spectrum may be adapted to accommodate images acquired by the detector at a different X-ray spectrum. The technique accounts for the physical variations in the detector which may produce spectrally-sensitive artifacts as well as for the particular image acquisition conditions. A technique is also provided for correcting edge artifacts in an acquired image by measuring median signal intensity within columns or rows of the image and deriving correction factors for the respective edge columns or rows based upon the trends of the median signal intensities. A technique is also provided for storing detector attributes during a manufacturing calibration process and accessing them during system operation such that a suitable gain correction factor is employed based upon the spectrum and operating conditions.
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公开(公告)号：JP2001228253A
公开(公告)日：2001-08-24
申请号：JP2000360406
申请日：2000-11-28
Applicant: GEN ELECTRIC
Inventor： ALBAGLI DOUGLAS , POSSIN GEORGE EDWARD , HAN SUNG SU , DEJULE MICHAEL CLEMENT
Abstract: PROBLEM TO BE SOLVED: To provide a high resolution and high luminance scintillator for medical imaging and for industrial imaging with using high energy radiation. SOLUTION: This fiber optic scintillator 18 includes a plurality of relatively low-density glass scintillating elements for converting radiation to light, and a plurality of relatively high-density glass radiation absorbing elements interspersed among the plurality of scintillating elements. The high-density glass radiation absorbing elements increase the X-ray stopping power of the scintillator, and also produce electron showers which desirably interact in adjacent scintillating elements to increase the luminance of the scintillator 18. The high- density glass radiation absorbing elements also absorb X-ray crosstalks from the absorption of radiation in the scintillating elements, and desirably include optical absorbers for absorbing optical crosstalks, both of which improve the resolution of the scintillator 18.
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公开(公告)号：JP2001141832A
公开(公告)日：2001-05-25
申请号：JP2000260018
申请日：2000-08-30
Applicant: GEN ELECTRIC
Inventor： ALBAGLI DOUGLAS
Abstract: PROBLEM TO BE SOLVED: To compensate for amplifier offset and gain artifacts of integrating read amplifiers 145 connected to a matrix address type array of photosensors 116 in a matrix address type X-ray imaging panel 115, and correct image signals generated by the imaging panel. SOLUTION: An average amplifier offset is calculated in a sequence of operations under control of a scanning line controller 155 and is applied to exposure signals during normal operation of the imaging panel. A basic gain calibration image is obtained periodically and is updated in the case of an optional selection in real time by a real time gain, determined every time the exposure signal is generated during normal operation of the imaging panel. The resulting real-time adjusted gain calibration image is divided to amplifier offset adjusted exposure signals in units of pixels, thereby generating an exposure signal with the offset and gain compensated for in real time.
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公开(公告)号：JPH10213664A
公开(公告)日：1998-08-11
申请号：JP28749997
申请日：1997-10-21
Applicant: GEN ELECTRIC
Inventor： POSSIN GEORGE EDWARD , ALBAGLI DOUGLAS , KWASNICK ROBERT FORREST , SAUNDERS ROWLAND FREDERICK , VAFI HABIB
IPC: G01T1/00 , H01L27/14 , H01L27/146 , H04N5/335
Abstract: PROBLEM TO BE SOLVED: To provide a radiation imaging device containing a protector against static charge. SOLUTION: Contained are a plurality of radiation detection elements 38 arranged in matrix and connected to each of address lines 16 and 22 of rows and lines and a radiation detection element array 10 having a common electrode insulated from the address line and connected to the radiation detection element. Also contained are an earth ring 14 surrounding the matrix radiation detection elements and a connection circuit electrically connected between the earth ring and the common electrode and selectively balancing the electric potentials between the common electrode and the earth ring. Further contained is a protection device 200 supporting the substrate 9 and arranged around the part of the substrate and the photodetector element array so as to have an opening 290 for making access to the photodetector element array and a plurality of contact pads 214. The protection device is electrically connected to the earth ring.
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