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1.发明授权
公开(公告)号：EP1940290B1
公开(公告)日：2012-01-11
申请号：EP06809318.6
申请日：2006-09-15
摘要： An imaging system (10) comprises a data device (30), which controls radiation data acquisition from a subject positioned in an examination region (18) for an examination. A rebinning processor (40) bins the acquired data periodically into a histogram (42). A transform (70) transforms the histogram (42) into individual independent or uncorrelated components, each component including a signal content and a noise content. A stopping determining device (52) compares an aspect of at least one selected component to a predetermined threshold (TH) and, based on the comparison, terminates the data acquisition.
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公开(公告)号：EP1940290A2
公开(公告)日：2008-07-09
申请号：EP06809318.6
申请日：2006-09-15
摘要： An imaging system (10) comprises a data device (30), which controls radiation data acquisition from a subject positioned in an examination region (18) for an examination. A rebinning processor (40) bins the acquired data periodically into a histogram (42). A transform (70) transforms the histogram (42) into individual independent or uncorrelated components, each component including a signal content and a noise content. A stopping determining device (52) compares an aspect of at least one selected component to a predetermined threshold (TH) and, based on the comparison, terminates the data acquisition.
摘要翻译： 成像系统（10）包括数据设备（30），其控制来自位于检查区域（18）中的对象的辐射数据采集以进行检查。 重组处理器（40）将获取的数据周期性地分组到柱状图（42）中。 变换（70）将直方图（42）变换成单独的独立或不相关的分量，每个分量包括信号内容和噪声内容。 停止确定装置（52）将至少一个选定分量的方面与预定阈值（TH）进行比较，并且基于该比较终止数据采集。
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公开(公告)号：EP2111558A2
公开(公告)日：2009-10-28
申请号：EP07873535.4
申请日：2007-10-16
发明人： GAGNON, Daniel , MORICH, Michael, A. , BLAKELEY, Douglas, M. , ZAHN, Robert, L. , NIEMAN, Kevin, M.
IPC分类号： G01R33/28 , G01R33/422 , G01R33/421 , G01R33/48
CPC分类号： G01R33/28 , G01R33/3875 , G01R33/421 , G01R33/422 , G01R33/481 , G01R33/4812
摘要： A hybrid imaging system includes a magnetic resonance scanner and a second modality imaging system disposed in the same radio frequency isolation space. The second modality imaging system includes radiation detectors configured to detect at least one of high energy particles and high energy photons. In some embodiments a retractable radio frequency screen is selectively extendible into a gap between the magnetic resonance scanner and the second modality imaging system. In some embodiments shim coils are disposed with the magnetic resonance scanner and are configured to compensate for distortion of the static magnetic field of the magnetic resonance scanner produced by proximity of the second modality imaging system.
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公开(公告)号：EP2081490A1
公开(公告)日：2009-07-29
申请号：EP07874217.8
申请日：2007-10-16
CPC分类号： A61B5/0555 , A61B5/0035 , A61B6/032 , A61B6/037 , A61B6/4417 , A61B6/4429
摘要： A hybrid imaging system and a patient bed (14) for same are disclosed. The hybrid imaging system includes a magnetic resonance scanner (10) and a second modality imaging system (12) spaced apart from the magnetic resonance scanner by a gap. In some embodiments, the gap is less than seven meters. The patient bed is disposed at least partially in the gap between the magnetic resonance scanner and the second modality imaging system, and includes a linearly translatable patient support pallet (22) aligned to be selectively moved into an examination region (24) of the magnetic resonance scanner for magnetic resonance imaging and into an examination region (26) of the second modality imaging system for second modality imaging. In some embodiments, a linear translation range of the linearly translatable pallet is less than five times a length of the patient support pallet along the direction of linear translation.
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公开(公告)号：EP2286274A2
公开(公告)日：2011-02-23
申请号：EP09754234.4
申请日：2009-05-13
CPC分类号： G01T1/1648 , A61B6/037 , G06T11/005
摘要： A diagnostic imaging device includes detector elements (16) for detecting gamma-rays indicative of nuclear decay events. The detected gamma-rays are used to produce lines of response (LORs) (46), which are time stamped (20) and stored in list mode. The LORs are reconstructed (34) into an image. An image analysis processor (38) analyzes the image for motion artifacts and iteratively adjusts an event transform processor (30) to transform selected LORs to minimize the motion artifacts. If the transformed LOR (50) does not correspond with a pair of detector elements (16), closest detector elements (52, 54) are determined. Candidate LORs (62) are created between the closest and neighboring detector elements. An event location (40) on an LOR (46) is determined from the time-of-flight (TOF) information and then transformed (47) to generate a transformed event location (48). The candidate LOR (62) which most nearly intersects the transformed event location (40) and the appropriately updated TOF information is selected for use in image reconstruction.
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6.发明公开
公开(公告)号：EP2147327A1
公开(公告)日：2010-01-27
申请号：EP08737896.4
申请日：2008-04-17
CPC分类号： G01R33/481 , G01R33/4808 , G01T1/1603 , G01T1/1647
摘要： An imaging method comprises: acquiring magnetic resonance data of a subject using a magnetic resonance component (30, 30′) disposed with the subject; acquiring nuclear imaging data of the subject with the magnetic resonance component disposed with the subject; determining a position of the magnetic resonance component respective to a frame of reference of the nuclear imaging data; and reconstructing the nuclear imaging data (60) to generate a nuclear image (62) of at least a portion of the subject. The reconstructing includes adjusting at least one of the nuclear imaging data and the nuclear image based on a density map (46) of the magnetic resonance component and the determined position of the magnetic resonance component respective to the frame of reference of the nuclear imaging data to correct the nuclear image for radiation absorption by the magnetic resonance component.
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公开(公告)号：EP2109399A2
公开(公告)日：2009-10-21
申请号：EP08702527.6
申请日：2008-01-25
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B5/055 , A61B5/721 , A61B5/7289 , A61B6/037 , A61B6/527 , A61N5/103 , A61N5/1037 , A61N5/1067 , A61N2005/1052
摘要： An apparatus includes a scanner (102, 104) and a scanning motion monitor (100). A motion modeler (116) uses data from the scanning motion monitor (100) and the scanner (102, 104) to generate a motion model which describes motion of a region of interest of an object. A treatment planner (112) uses image data from the scanner (102, 104) to establish a treatment plan for the object. A treatment device 114, which operates in conjunction with a treatment motion monitor (108), uses the motion model to compensate for motion of the object during application of the treatment.
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公开(公告)号：EP1949136A1
公开(公告)日：2008-07-30
申请号：EP06809627.0
申请日：2006-10-17
发明人： GAGNON, Daniel , WANG, Wenli , HU, Zhiqiang
CPC分类号： G01T1/2985 , A61B6/037 , G01T1/1611 , G06T11/006 , G06T2211/424
摘要： A method and apparatus are provided for reconstructing list mode data acquired during a positron emission tomography scan of an object, the data including information indicative of a plurality of detected positron annihilation events. Detected events occurring in a region of interest are identified; the identified events are reconstructed using an iterative reconstruction technique which includes a ray tracing operation to generate volumetric data indicative of the region of interest, wherein the ray tracing operation traces only image matrix elements located in the region of interest; and a human readable image indicative of the volumetric data is generated. In another aspect an image mask and a projection mask are defined correlating to the region of interest; image matrix elements located in the region of interest are determined by applying the image mask; and detected events occurring in a region of interest are identified by applying the projection mask.
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9.发明公开POSITRON EMISSION TOMOGRAPHY TIME-OF-FLIGHT LIST MODE RECONSTRUCTION WITH DETECTOR RESPONSE FUNCTION 有权飞行时间 - 飞行时间 - 诱导时间 - 麻醉诱导剂
公开(公告)号：EP1922566A1
公开(公告)日：2008-05-21
申请号：EP06780231.4
申请日：2006-07-27
CPC分类号： G01T1/2985 , G06T11/006
摘要： A PET system includes an improved image reconstruction algorithm based on an improved modeling of the point-spread function. PET time of flight data is used to obtain a mean emitting point and a time of flight probability function. This information is then used to model the point-spread function. The time of flight probability function and the detector response function are used to define a probability volume for a given line of response, which is then used in the reconstruction of the image.
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公开(公告)号：EP1890591A1
公开(公告)日：2008-02-27
申请号：EP06727871.3
申请日：2006-04-10
发明人： GAGNON, Daniel , BRAESS, Henning
IPC分类号： A61B5/04
CPC分类号： A61B6/541 , A61B5/02755 , A61B5/7289 , A61B6/037 , A61B6/5288 , A61B8/5276 , A61B8/543
摘要： In a diagnostic imaging system (10), a monitor (50) monitors periodic biological cycles of the subject (14). A trigger point detector (60) detects a time (tl, t2, ..., tn) of a common, reoccurring reference point (Rl, R2, ..., Rn) in each periodic cycle of the subject (14). A sequence selector (62) selects a sequence (64) of nominal sampling segments (Si, S2, ..., Sn). An adjustor (70) adjusts duration of each nominal sampling segment (Si, S2, ..., Sn) to coincide with the times of detected reference points (Rl, R2, ..., Rn). A scaling processor (72) scales each adjusted segment based on a difference in duration between the corresponding nominal (Si, S2, ..., Sn) and adjusted sampling segments (S'i, S'2, ..., S'n).
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