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1. 发明申请

US20130026370A1 METHODS AND SYSTEMS FOR SCATTER ESTIMATION IN POSITRON EMISSION TOMOGRAPHY 有权
标题翻译：方法和系统在排气排放测量中的散射估计
公开(公告)号：US20130026370A1
公开(公告)日：2013-01-31
申请号：US13191205
申请日：2011-07-26
申请人： Hua Qian , Ravindra Mohan Manjeshwar , Kris Filip Johan Jules Thielemans
发明人： Hua Qian , Ravindra Mohan Manjeshwar , Kris Filip Johan Jules Thielemans
IPC分类号： G01T1/164
CPC分类号： G01T1/1615 , A61B6/037 , G06T11/005
摘要： Methods and systems for multiple scatter estimation in Positron Emission Tomography (PET) are provided. One method includes determining attenuation sinograms and determining a varying convolution kernel as a function of the attenuation sinograms, wherein the kernel varies in amplitude and width over a radial length of a PET imaging system. The method also includes using the varying convolution kernel to estimate multiple PET scatter.
摘要翻译：提供了正电子发射断层扫描（PET）中多重散射估计的方法和系统。一种方法包括确定衰减正弦图并确定作为衰减正弦图的函数的变化的卷积核，其中所述核在PET成像系统的径向长度上的幅度和宽度上变化。该方法还包括使用变化的卷积核估计多个PET散射。

2. 发明授权

US08575554B2 Methods and systems for scatter estimation in positron emission tomography 有权
标题翻译：正电子发射断层扫描中散射估计的方法和系统
公开(公告)号：US08575554B2
公开(公告)日：2013-11-05
申请号：US13191205
申请日：2011-07-26
申请人： Hua Qian , Ravindra Mohan Manjeshwar , Kris Filip Johan Jules Thielemans
发明人： Hua Qian , Ravindra Mohan Manjeshwar , Kris Filip Johan Jules Thielemans
IPC分类号： G01T1/164 , A61B6/00 , G06K9/00
CPC分类号： G01T1/1615 , A61B6/037 , G06T11/005
摘要： Methods and systems for multiple scatter estimation in Positron Emission Tomography (PET) are provided. One method includes determining attenuation sinograms and determining a varying convolution kernel as a function of the attenuation sinograms, wherein the kernel varies in amplitude and width over a radial length of a PET imaging system. The method also includes using the varying convolution kernel to estimate multiple PET scatter.
摘要翻译：提供了正电子发射断层扫描（PET）中多重散射估计的方法和系统。一种方法包括确定衰减正弦图并确定作为衰减正弦图的函数的变化的卷积核，其中所述核在PET成像系统的径向长度上的幅度和宽度上变化。该方法还包括使用变化的卷积核估计多个PET散射。

3. 发明授权

US08472683B2 Motion correction in tomographic images 有权
标题翻译：断层图像中的运动校正
公开(公告)号：US08472683B2
公开(公告)日：2013-06-25
申请号：US12550773
申请日：2009-08-31
申请人： Ravindra Mohan Manjeshwar , Kris Filip Johan Jules Thielemans , Evren Asma
发明人： Ravindra Mohan Manjeshwar , Kris Filip Johan Jules Thielemans , Evren Asma
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B5/7285 , A61B6/037 , A61B6/5235 , A61B6/5247 , A61B6/541 , G06T5/003 , G06T7/30 , G06T7/33 , G06T11/005 , G06T11/008 , G06T2207/10081 , G06T2207/10084 , G06T2207/10104 , G06T2207/20201 , G06T2207/20221 , G06T2207/30004 , G06T2207/30048 , G06T2207/30061 , G06T2211/412
摘要： An imaging method comprises reconstructing gated emission tomography images for a region of interest, adjusting a mismatch between the gated emission tomography images and a computed tomography image of the region of interest, registering the gated emission tomography images, and combining the registered gated emission tomography images to generate motion corrected images.
摘要翻译：一种成像方法包括重建关注区域的门控发射断层摄影图像，调整门控发射断层摄影图像与感兴趣区域的计算机断层摄影图像之间的失配，登记门控发射断层摄影图像，以及组合登记的门控发射断层摄影图像以产生运动校正图像。

4. 发明授权

US08355551B2 Method and apparatus for reducing image artifacts 有权
标题翻译：减少图像伪影的方法和装置
公开(公告)号：US08355551B2
公开(公告)日：2013-01-15
申请号：US12394772
申请日：2009-02-27
申请人： Kris Filip Johan Jules Thielemans , Scott David Wollenweber , Alexander Ganin , Anja Brau , Floribertus P. M. Heukensfeldt Jansen , Evren Asma , Rakesh Mullick , Ravindra Mohan Manjeshwar , Ajit Shankaranarayanan
发明人： Kris Filip Johan Jules Thielemans , Scott David Wollenweber , Alexander Ganin , Anja Brau , Floribertus P. M. Heukensfeldt Jansen , Evren Asma , Rakesh Mullick , Ravindra Mohan Manjeshwar , Ajit Shankaranarayanan
IPC分类号： G06K9/00
CPC分类号： G06T11/005 , G06T2211/412
摘要： A method and apparatus are provided for reducing motion related imaging artifacts. The method includes determining an internal motion for of two regions of the object, each region having a different level of motion, scanning the first region using a first scan protocol based on the motion, scanning a second region using a second different scan protocol based on the motion, and generating an image of the object based on the first and second regions.
摘要翻译：提供了一种用于减少运动相关成像伪影的方法和装置。该方法包括确定对象的两个区域的内部运动，每个区域具有不同的运动水平，基于运动使用第一扫描协议扫描第一区域，使用基于第二扫描协议的第二不同扫描协议扫描第二区域运动，以及基于第一和第二区域生成对象的图像。

5. 发明申请

US20100046821A1 MOTION CORRECTION IN TOMOGRAPHIC IMAGES 有权
标题翻译：图像图像中的运动校正
公开(公告)号：US20100046821A1
公开(公告)日：2010-02-25
申请号：US12550773
申请日：2009-08-31
申请人： Ravindra Mohan Manjeshwar , Kris Filip Johan Jules Thielemans , Evren Asma
发明人： Ravindra Mohan Manjeshwar , Kris Filip Johan Jules Thielemans , Evren Asma
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B5/7285 , A61B6/037 , A61B6/5235 , A61B6/5247 , A61B6/541 , G06T5/003 , G06T7/30 , G06T7/33 , G06T11/005 , G06T11/008 , G06T2207/10081 , G06T2207/10084 , G06T2207/10104 , G06T2207/20201 , G06T2207/20221 , G06T2207/30004 , G06T2207/30048 , G06T2207/30061 , G06T2211/412
摘要： An imaging method comprises reconstructing gated emission tomography images for a region of interest, adjusting a mismatch between the gated emission tomography images and a computed tomography image of the region of interest, registering the gated emission tomography images, and combining the registered gated emission tomography images to generate motion corrected images.
摘要翻译：一种成像方法包括重建关注区域的门控发射断层摄影图像，调整门控发射断层摄影图像与感兴趣区域的计算机断层摄影图像之间的失配，登记门控发射断层摄影图像，以及组合登记的门控发射断层摄影图像以产生运动校正图像。

6. 发明申请

US20100220909A1 METHOD AND APPARATUS FOR REDUCING IMAGE ARTIFACTS 有权
标题翻译：用于减少图像的方法和装置
公开(公告)号：US20100220909A1
公开(公告)日：2010-09-02
申请号：US12394772
申请日：2009-02-27
申请人： Kris Filip Johan Jules Thielemans , Scott David Wollenweber , Alexander Ganin , Anja Brau , Floribertus P. M. Heukensfeldt Jansen , Evren Asma , Rakesh Mullick , Ravindra Mohan Manjeshwar , Ajit Shankaranarayanan
发明人： Kris Filip Johan Jules Thielemans , Scott David Wollenweber , Alexander Ganin , Anja Brau , Floribertus P. M. Heukensfeldt Jansen , Evren Asma , Rakesh Mullick , Ravindra Mohan Manjeshwar , Ajit Shankaranarayanan
IPC分类号： G06K9/00
CPC分类号： G06T11/005 , G06T2211/412
摘要： A method and apparatus are provided for reducing motion related imaging artifacts. The method includes determining an internal motion for of two regions of the object, each region having a different level of motion, scanning the first region using a first scan protocol based on the motion, scanning a second region using a second different scan protocol based on the motion, and generating an image of the object based on the first and second regions.
摘要翻译：提供了一种用于减少运动相关成像伪影的方法和装置。该方法包括确定对象的两个区域的内部运动，每个区域具有不同的运动水平，基于运动使用第一扫描协议扫描第一区域，使用基于第二扫描协议的第二不同扫描协议扫描第二区域运动，以及基于第一和第二区域生成对象的图像。

7. 发明申请

US20140064446A1 X-RAY ABSORPTIOMETRY USING SOLID-STATE PHOTOMULTIPLIERS 审中-公开
标题翻译：使用固态光催化剂的X射线吸收
公开(公告)号：US20140064446A1
公开(公告)日：2014-03-06
申请号：US13605493
申请日：2012-09-06
申请人： James A. Wear , Sergei Dolinsky , Randall Payne , Ravindra Mohan Manjeshwar
发明人： James A. Wear , Sergei Dolinsky , Randall Payne , Ravindra Mohan Manjeshwar
IPC分类号： G01T1/20 , G01N23/04
CPC分类号： G01N23/04 , G01T1/2018 , G01T1/208
摘要： An x-ray absorptiometry apparatus and method utilize a radiation source having a beam opening angle of less than or equal to 30 milliradians in at least one dimension, an array of scintillator units to receive radiation from the radiation source with the beam angle after the radiation has passed through a body being imaged and at least one solid-state photomultiplier to receive photons from the array of scintillator units and to produce electrical signal based on the photons. In one implementation, an optical area transmission passage modifier is employed in a dual energy x-ray absorptiometry system. In one implementation, the array of scintillator units are arranged in staggered rows. In yet another implementation, the solid-state photomultiplier includes a plurality of solid-state photomultipliers arranged in rows. In one implementation, a single solid-state photomultiplier receive photons from a plurality of scintillators of the array.
摘要翻译： X射线吸收测定装置和方法利用在至少一个维度上具有小于或等于30毫弧度的光束开启角的辐射源，用于接收来自辐射源的辐射的闪烁体单元阵列，其具有在辐射之后的束角度已经通过被成像的身体和至少一个固态光电倍增管，以从闪烁体单元阵列接收光子并产生基于光子的电信号。在一个实施方案中，在双能X射线吸收测定系统中采用光学区域传输通道改进剂。在一个实现中，闪烁体单元阵列以交错排布置。在又一实施方式中，固态光电倍增管包括排成行的多个固态光电倍增管。在一个实施方案中，单个固态光电倍增管从阵列的多个闪烁体接收光子。

8. 发明申请

US20110158494A1 SYSTEMS AND METHODS FOR IDENTIFYING BONE MARROW IN MEDICAL IMAGES 有权
标题翻译：用于识别医学图像中骨骼大小的系统和方法
公开(公告)号：US20110158494A1
公开(公告)日：2011-06-30
申请号：US12650036
申请日：2009-12-30
申请人： Avi Bar-Shalev , Ravindra Mohan Manjeshwar
发明人： Avi Bar-Shalev , Ravindra Mohan Manjeshwar
IPC分类号： G06K9/00 , G06T17/00
CPC分类号： G06T7/0012 , A61B6/032 , A61B6/505 , A61B6/508 , A61B6/5241 , G06K9/00 , G06T7/11 , G06T7/13 , G06T7/187 , G06T2207/10081 , G06T2207/20164 , G06T2207/30008
摘要： Systems and method for identifying bone marrow in medical images are provided. A method includes obtaining a three-dimensional (3D) computed tomography (CT) volume data set corresponding to an imaged volume and identifying voxels in the 3D CT volume data set having a Hounsfield Unit (HU) value below a bone threshold. The voxels are identified without using image continuity. The method further includes marking the identified voxels as non-bone voxels, determining definite tissue voxels based on the identified non-bone voxels and expanding a region defined by the definite tissue voxels. The method also includes segmenting the expanded region to identify bone voxels and bone marrow voxels and identifying bone marrow as voxels that are not the bone voxels.
摘要翻译：提供了用于鉴定医学图像中骨髓的系统和方法。一种方法包括获得对应于成像体积的三维（3D）计算机断层摄影（CT）体数据集，并且在具有低于骨阈值的Hounsfield单位（HU）值的3D CT体积数据集中识别体素。识别体素而不使用图像连续性。该方法还包括将所识别的体素标记为非骨体素，基于所识别的非骨体素来确定确定的组织体素并且扩展由所述确定的组织体素定义的区域。该方法还包括分割扩大区域以鉴定骨骼体素和骨髓体素，并将骨髓识别为不是骨骼体素的体素。

9. 发明申请

US20100193697A1 APPARATUS AND METHODS FOR EVALUATING OPERATION OF PIXELATED DETECTORS 有权
标题翻译：用于评估像素检测器操作的装置和方法
公开(公告)号：US20100193697A1
公开(公告)日：2010-08-05
申请号：US12365100
申请日：2009-02-03
申请人： Girish Bal , Floribertus Heukensfeldt Jansen , Osnat Zak , Gideon Berlad , Yaron Hefetz , Sergei Dolinsky , Brian D. Yanoff , John Eric Tkaczyk , Yanfeng Du , Ravindra Mohan Manjeshwar , Evren Asma , Qian Hua
发明人： Girish Bal , Floribertus Heukensfeldt Jansen , Osnat Zak , Gideon Berlad , Yaron Hefetz , Sergei Dolinsky , Brian D. Yanoff , John Eric Tkaczyk , Yanfeng Du , Ravindra Mohan Manjeshwar , Evren Asma , Qian Hua
IPC分类号： G01T1/00 , G01T1/172
CPC分类号： G01T1/249 , G01T1/247
摘要： An apparatus and methods for evaluating the operation of pixelated detectors are provided. The method includes obtaining data values for each of a plurality of pixels of a pixelated detector and determining a data consistency metric for each of the plurality of detector pixels. The method further includes identifying, using the determined data consistency metric, any detector pixels that exceed an acceptance criterion as noisy pixels.
摘要翻译：提供了一种用于评估像素化检测器的操作的装置和方法。该方法包括获得像素化检测器的多个像素中的每一个的数据值，并确定多个检测器像素中的每一个的数据一致性度量。该方法还包括使用所确定的数据一致性度量来识别超过接受标准的任何检测器像素作为噪声像素。

10. 发明授权

US07518114B2 Method and system for imaging a patient 有权
标题翻译：用于对患者进行成像的方法和系统
公开(公告)号：US07518114B2
公开(公告)日：2009-04-14
申请号：US10985752
申请日：2004-11-10
申请人： Alexander Ganin , Floribertus Philippus Martinus Heukensfeldt Jansen , Ricardo Scott Avila , Dinko Eduardo Gonzalez Trotter , Ravindra Mohan Manjeshwar , James Vradenburg Miller , Thomas Baby Sebastian
发明人： Alexander Ganin , Floribertus Philippus Martinus Heukensfeldt Jansen , Ricardo Scott Avila , Dinko Eduardo Gonzalez Trotter , Ravindra Mohan Manjeshwar , James Vradenburg Miller , Thomas Baby Sebastian
IPC分类号： G01T1/164 , G01T1/166
CPC分类号： G01T1/2985 , A61B6/037 , G01T1/1611 , G01T1/1615
摘要： Methods and systems for imaging a patient are provided. The method includes determining a location of a volume of interest within the patient and acquiring a plurality of frames of emission data, at least one frame including the volume of interest. The method further includes determining a time-of-flight (TOF) information of at least a portion of the annihilations detected along a line of response between corresponding coincidence detectors and generating an image of the patient from the emission data using the determined TOF information.
摘要翻译：提供了用于成像患者的方法和系统。该方法包括确定患者体内感兴趣体积的位置并获取多个发射数据帧，至少一帧包括感兴趣的体积。该方法还包括确定在相应的重合检测器之间沿着响应线检测到的湮灭的至少一部分的飞行时间（TOF）信息，并使用确定的TOF信息从发射数据生成患者的图像。

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