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1.发明申请Ultrasonic Imager for Motion Measurement in Multi-Modality Emission Imaging 有权超声波成像仪用于多模式发射成像中的运动测量公开(公告)号：US20090076379A1
公开(公告)日：2009-03-19
申请号：US12125329
申请日：2008-05-22
CPC分类号： A61B8/08 , A61B5/7285 , A61B6/032 , A61B6/5247 , A61B6/541 , A61B8/4245 , A61B8/5238 , A61B8/543 , G01T1/1603
摘要： A medical imaging device has an emission tomograph, at least one ultrasonic (US) probe for providing images giving real-time information about the location of the internal organs of a subject, a tracking system for spatially locating the at least one ultrasonic probe in relation to the medical imaging device, and an image processing unit in which the location information obtained by the ultrasonic probe is used for attenuation correction of image information obtained by the emission tomograph.
摘要翻译： 一种医疗成像装置具有发射断层摄影机，至少一个超声波（US）探头，用于提供给出关于被检体的内部器官的位置的实时信息的图像，用于相对于空间定位至少一个超声波探头的跟踪系统 以及图像处理单元，其中由超声波探头获得的位置信息用于由发射断层摄影机获得的图像信息的衰减校正。
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2.发明授权Normalization apparatus for PET and SPECT scanners and method for using same 失效PET和SPECT扫描仪的归一化装置及其使用方法公开(公告)号：US06774358B2
公开(公告)日：2004-08-10
申请号：US10103276
申请日：2002-03-21
IPC分类号： G01K500
CPC分类号： G01T1/2985 , A61B6/037 , G01T1/1644
摘要： Apparatus and methods for simulating a sheet source with a line source for determining normalization coefficients for the detectors in positron emission tomography (PET) scanners and single photon emission computed tomography (SPECT) scanners. A line source, oriented perpendicular to the axis of a scanner gantry, is moved along the axis while the detectors are stationary and positioned substantially parallel to the plane in which the source moves. In another embodiment, an axially mounted line source moves parallel to a diameter of the gantry while the stationary detectors are positioned substantially parallel to the plane in which the source moves. In still another embodiment, the line source is stationary and positioned parallel to the gantry axis and off center while the detectors move relative to the line source. A shaped attenuator is placed around the source in this last embodiment.
摘要翻译： 用于模拟具有用于确定正电子发射断层摄影（PET）扫描仪和单光子发射计算机断层摄影（SPECT）扫描仪中的检测器的归一化系数的线源的片材源的装置和方法。 垂直于扫描仪台架的轴线定向的线源沿轴线移动，同时检测器是固定的并且基本上平行于源移动的平面定位。 在另一个实施例中，轴向安装的线源平行于台架的直径移动，而固定检测器基本上平行于源移动的平面定位。 在另一个实施例中，线源固定并且平行于台架轴定位并且离开中心，同时检测器相对于线源移动。 在最后一个实施例中，围绕源设置成形的衰减器。
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公开(公告)号：US06963065B2
公开(公告)日：2005-11-08
申请号：US10418520
申请日：2003-04-18
申请人： Maurizio Conti , James J. Hamill , Michael E. Casey , Mu Chen
发明人： Maurizio Conti , James J. Hamill , Michael E. Casey , Mu Chen
CPC分类号： G01T1/2985 , A61B6/037
摘要： A normalization apparatus and method for a PET scanner with panel detectors for obtaining an estimate of a normalization array, for correction for count rate effects on the normalization array, and for measurement of the relation between the normalization array and the count rate. The method of the present invention is based on two quasi-independent radial and axial components, which are count rate dependent due to sensitivity changes across the detector blocks. A scatter source is disposed at the center of the FOV and a scatter-free source is disposed at the outer edge of the FOV. The method computes the normalization array through several steps which evaluate the geometric profile, the axial profile, and the correction factor. A count rate correction is introduced to extend the normalization array to any count rate.
摘要翻译： 一种具有面板检测器的PET扫描仪的归一化装置和方法，用于获得归一化阵列的估计，用于校正对归一化阵列的计数率影响，以及用于测量归一化阵列与计数率之间的关系。 本发明的方法是基于两个准独立的径向和轴向分量，其由于检测器块两端的灵敏度变化而依次计数。 散射源设置在FOV的中心，并且不分散源设置在FOV的外边缘处。 该方法通过评估几何轮廓，轴向轮廓和校正因子的几个步骤来计算归一化阵列。 引入计数率校正以将归一化数组扩展到任何计数率。
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4.发明授权Ultrasonic imager for motion measurement in multi-modality emission imaging 有权超声波成像仪用于多模式发射成像中的运动测量公开(公告)号：US08565856B2
公开(公告)日：2013-10-22
申请号：US12125329
申请日：2008-05-22
IPC分类号： A61B5/05
CPC分类号： A61B8/08 , A61B5/7285 , A61B6/032 , A61B6/5247 , A61B6/541 , A61B8/4245 , A61B8/5238 , A61B8/543 , G01T1/1603
摘要： A medical imaging device has an emission tomograph, at least one ultrasonic (US) probe for providing images giving real-time information about the location of the internal organs of a subject, a tracking system for spatially locating the at least one ultrasonic probe in relation to the medical imaging device, and an image processing unit in which the location information obtained by the ultrasonic probe is used for attenuation correction of image information obtained by the emission tomograph.
摘要翻译： 一种医疗成像装置具有发射断层摄影机，至少一个超声波（US）探头，用于提供给出关于被检体的内部器官的位置的实时信息的图像，用于相对于空间定位至少一个超声波探头的跟踪系统 以及图像处理单元，其中由超声波探头获得的位置信息用于由发射断层摄影机获得的图像信息的衰减校正。
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公开(公告)号：US06429434B1
公开(公告)日：2002-08-06
申请号：US09398497
申请日：1999-09-17
IPC分类号： G01T1166
CPC分类号： G01T1/2985 , A61B6/037 , G01T1/1648 , G21K1/02
摘要： A transmission source serves to detect activity from a radiation source for correcting attenuation in either PET mode or SPECT mode. The transmission source includes a detector dedicated to collecting attenuation data in PET mode. A collimated radiation source and a detector are positioned with respect to a tomography device such that only a selected strip of the imaging detector of the tomograph is illuminated such that events unrelated to the attenuation are eliminated. The transmission source can either be a coincidence transmission source or a singles transmission source and includes a collimator in which is disposed a radiation source. An opening is defined by the collimator for exposing a selected portion of the imaging detectors of the tomograph device. Positioned behind the radiation source, relative to the imaging detectors, is the dedicated attenuation detector. In a dual head tomograph device, one transmission source of the present invention is disposed opposite each bank of imaging detectors. The sources and the associated collimators are positioned to the side of each head at a slight angle relative to the respective head. The sources and detectors are fixed relative to the imaging heads. In order to obtain full coverage of the field of view (FOV) in the same manner as for an emission scan, the heads and sources are rotated about the center of the camera. In SPECT mode, the point source is selected to have sufficiently high energy to shine through the patient and the collimators associated with the imaging detector.
摘要翻译： 传输源用于检测来自辐射源的活动以校正PET模式或SPECT模式中的衰减。 传输源包括专用于在PET模式下收集衰减数据的检测器。 准直辐射源和检测器相对于断层摄影装置定位，使得只有层析成像仪的成像检测器的选定条带被照亮，从而消除与衰减无关的事件。 传输源可以是重合传输源或单个传输源，并且包括准直仪，其中设置有辐射源。 由准直器限定开口以暴露层析成像装置的成像检测器的选定部分。 相对于成像检测器定位在辐射源之后，是专用的衰减检测器。 在双头断层摄影装置中，本发明的一个发射源与每一组成像检测器相对设置。 源和相关联的准直仪相对于相应的头部以相当小的角度定位在每个头部的侧面。 源和检测器相对于成像头是固定的。 为了以与发射扫描相同的方式获得视场（FOV）的全面覆盖，头部和源围绕照相机的中心旋转。 在SPECT模式中，点源被选择为具有足够高的能量以照射通过患者和与成像检测器相关联的准直仪。
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6.发明申请Diagnostic probe for combining positron emission measurements with ultrasonography 审中-公开用于将正电子发射测量与超声检查结合的诊断探针公开(公告)号：US20090030310A1
公开(公告)日：2009-01-29
申请号：US11881342
申请日：2007-07-26
CPC分类号： A61B8/12 , A61B6/037 , A61B6/4258 , A61B6/4417 , A61B8/4416 , G01T1/161
摘要： A system for dual-mode medical imaging is provided. The system features components for PET imaging as well as for ultrasonic imaging, with an internal probe that has components to provide capability for both. The system provides cost-efficient PET imaging for smaller regions and organs of interest than conventional full body PET scanner apparatus.
摘要翻译： 提供了一种双模式医学成像系统。 该系统具有用于PET成像以及超声成像的组件，内部探针具有为两者提供能力的组件。 该系统为传统全身PET扫描仪装置的较小区域和器官提供了具有成本效益的PET成像。
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公开(公告)号：US5757006A
公开(公告)日：1998-05-26
申请号：US790833
申请日：1997-01-30
申请人： Raymond P. DeVito , James J. Hamill
发明人： Raymond P. DeVito , James J. Hamill
CPC分类号： G01T1/1642 , G01T1/249 , A61B6/037
摘要： An articulating detector array for gamma cameras is disclosed which is adaptable to perform different imaging techniques in a single apparatus. The articulating detector array is adapted to detect incident gamma radiation from diverse directions as well as Compton scattering thereof without the need of a collimator, as so has improved gamma ray detection efficiency. The detector array includes radiation detectors in an array and movable to a plurality of positions, in which each radiation detector is responsive to gamma radiation from a target for generating detection signals for use in tomographic imaging of the source. The detector array includes articulating support structures for mounting the detectors to the base and for moving the detectors from a first position to a second position. In one embodiment, the articulating support structures includes a first portion connected to a detector; and a second portion connected to the base, in which the first portion is adapted to extend from the second portion from the first position to the second position. In another embodiment, the articulating support structures include a pivot for pivotably mounting the detectors and for rotating the detectors from a first position to a second position.
摘要翻译： 公开了一种用于伽马照相机的关节式检测器阵列，其适用于在单个装置中执行不同的成像技术。 铰接检测器阵列适于从不同方向检测入射伽马射线以及其康普顿散射，而不需要准直器，因此伽马射线检测效率得到改善。 检测器阵列包括阵列中的辐射检测器并且可移动到多个位置，其中每个辐射检测器响应来自目标的伽马射线，用于产生用于源的断层成像的检测信号。 检测器阵列包括用于将检测器安装到基座并用于将检测器从第一位置移动到第二位置的铰接支撑结构。 在一个实施例中，铰接支撑结构包括连接到检测器的第一部分; 以及连接到所述基座的第二部分，其中所述第一部分适于从所述第二部分从所述第一位置延伸到所述第二位置。 在另一个实施例中，铰接支撑结构包括用于可枢转地安装检测器并用于将检测器从第一位置转动到第二位置的枢轴。
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公开(公告)号：US20100063378A1
公开(公告)日：2010-03-11
申请号：US12558159
申请日：2009-09-11
IPC分类号： A61B6/04
CPC分类号： A61B6/037 , A61B5/103 , A61B6/0421 , A61B6/482
摘要： A constraint having a main body and at least one coupler. The main body can be substantially arcuate in shape and can be configured to constrain a patient. The at least one coupler can couple the main body to a bed or treatment pallet. The constraint can be sized to restrict a patient within a computerized tomography (CT) scan field of view.
摘要翻译： 具有主体和至少一个耦合器的约束。 主体可以是基本上弓形的形状，并且可以构造成约束患者。 所述至少一个联接器可以将主体连接到床或处理托盘。 该约束的大小可以限制在计算机断层摄影（CT）扫描视野内的患者。
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9.发明授权公开(公告)号：US07676073B2
公开(公告)日：2010-03-09
申请号：US11550445
申请日：2006-10-18
申请人： James J. Hamill , David D. Faul
发明人： James J. Hamill , David D. Faul
CPC分类号： G06T11/005
摘要： A method of reducing ring artifacts in tomographic images including providing an original digitized projection measurement comprising a plurality of intensities corresponding to a domain of points on an 2-dimensional grid, operating on said original projection measurement with a filter wherein features of high radial frequency and low angular frequency are attenuated, forming a weighted mixture of said filtered projection measurement and said original projection measurement wherein ring artifacts in said original tomographic image are substantially reduced, and reconstructing the projection measurement to form a tomographic image. Alternatively, a first tomographic image is reconstructed from said original projection measurement, a second tomographic image is reconstructed from said filtered projection measurement, and a weighted mixture is formed from said first tomographic image and said second tomographic image.
摘要翻译： 一种降低断层图像中的环形伪影的方法，包括提供原始的数字化投影测量，该原始数字化投影测量包括对应于二维网格上的点的区域的多个强度，用滤波器对所述原始投影测量进行操作，其中高径向频率和 低角频率被衰减，形成所述滤波投影测量和所述原始投影测量的加权混合，其中所述原始断层图像中的环形伪影被大大减少，并且重建投影测量以形成断层图像。 或者，从所述原始投影测量重建第一断层图像，从所述滤波投影测量重建第二断层图像，并且从所述第一断层图像和所述第二断层图像形成加权混合。
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10.发明申请公开(公告)号：US20080056549A1
公开(公告)日：2008-03-06
申请号：US11550445
申请日：2006-10-18
申请人： James J. Hamill , David D. Faul
发明人： James J. Hamill , David D. Faul
CPC分类号： G06T11/005
摘要： A method of reducing ring artifacts in tomographic images including providing an original digitized projection measurement comprising a plurality of intensities corresponding to a domain of points on an 2-dimensional grid, operating on said original projection measurement with a filter wherein features of high radial frequency and low angular frequency are attenuated, forming a weighted mixture of said filtered projection measurement and said original projection measurement wherein ring artifacts in said original tomographic image are substantially reduced, and reconstructing the projection measurement to form a tomographic image. Alternatively, a first tomographic image is reconstructed from said original projection measurement, a second tomographic image is reconstructed from said filtered projection measurement, and a weighted mixture is formed from said first tomographic image and said second tomographic image.
摘要翻译： 一种降低断层图像中的环形伪影的方法，包括提供原始的数字化投影测量，该原始数字化投影测量包括对应于二维网格上的点的区域的多个强度，用滤波器对所述原始投影测量进行操作，其中高径向频率和 低角频率被衰减，形成所述滤波投影测量和所述原始投影测量的加权混合，其中所述原始断层图像中的环形伪影被大大减少，并且重建投影测量以形成断层图像。 或者，从所述原始投影测量重建第一断层图像，从所述滤波投影测量重建第二断层图像，并且从所述第一断层图像和所述第二断层图像形成加权混合。
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