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公开(公告)号：US08483363B2
公开(公告)日：2013-07-09
申请号：US12740366
申请日：2008-11-04
IPC分类号： G21K3/00
CPC分类号： A61B6/032 , A61B6/037 , A61B6/4035 , G21K1/10
摘要： When generating a 3D image of a subject or patient, a cone beam X-ray source (20a, 20b) is mounted to a rotatable gantry (14) opposite an offset flat panel X-ray detector (22a, 22b). A wedge-shaped attenuation filter (24a, 24b) of suitable material (e.g., aluminum or the like) is adjustably positioned in the cone beam to selectively attenuate the beam as a function of the shape, size, and density of a volume of interest (18) through which X-rays pass in order to maintain X-ray intensity or gain at a relatively constant level within a range of acceptable levels.
摘要翻译： 当产生被摄体或患者的3D图像时，锥形束X射线源（20a，20b）安装到与偏移平板X射线检测器（22a，22b）相对的可旋转机架（14）。 适当材料（例如铝等）的楔形衰减滤波器（24a，24b）可调节地定位在锥形束中，以根据感兴趣体积的形状，尺寸和密度来选择性地衰减光束 （18），以便在可接受水平的范围内使X射线强度或增益保持在相对恒定的水平。
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公开(公告)号：US20100308229A1
公开(公告)日：2010-12-09
申请号：US12740366
申请日：2008-11-04
CPC分类号： A61B6/032 , A61B6/037 , A61B6/4035 , G21K1/10
摘要： When generating a 3D image of a subject or patient, a cone beam X-ray source (20a, 20b) is mounted to a rotatable gantry (14) opposite an offset flat panel X-ray detector (22a, 22b). A wedge-shaped attenuation filter (24a, 24b) of suitable material (e.g., aluminum or the like) is adjustably positioned in the cone beam to selectively attenuate the beam as a function of the shape, size, and density of a volume of interest (18) through which X-rays pass in order to maintain X-ray intensity or gain at a relatively constant level within a range of acceptable levels.
摘要翻译： 当产生被摄体或患者的3D图像时，锥形束X射线源（20a，20b）安装到与偏移平板X射线检测器（22a，22b）相对的可旋转机架（14）。 适当材料（例如铝等）的楔形衰减滤波器（24a，24b）可调节地定位在锥形束中，以根据感兴趣体积的形状，尺寸和密度来选择性地衰减光束 （18），以便在可接受水平的范围内使X射线强度或增益保持在相对恒定的水平。
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公开(公告)号：US09420974B2
公开(公告)日：2016-08-23
申请号：US12995679
申请日：2009-05-29
申请人： Jinghan Ye , Hongjie Liang , John Vesel , David Sowards-Emmerd , Lingxiong Shao , Jody L. Garrard
发明人： Jinghan Ye , Hongjie Liang , John Vesel , David Sowards-Emmerd , Lingxiong Shao , Jody L. Garrard
CPC分类号： A61B6/032 , A61B6/037 , A61B6/466 , A61B6/503 , A61B6/5235 , A61B6/541 , G01T1/1611
摘要： A method and apparatus of image reconstruction attenuation correction in PET or SPECT cardiac imaging is provided. A volumetric attenuation imaging scan by an X-ray source may be used to generate a gamma ray attenuation map. The volumetric attenuation imaging scan may be randomized, and may be performed while the imaged subject is breathing.
摘要翻译： 提供PET或SPECT心脏成像中图像重建衰减校正的方法和装置。 可以使用X射线源的体积衰减成像扫描来产生伽马射线衰减图。 体积衰减成像扫描可以是随机化的，并且可以在成像对象呼吸时执行。
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公开(公告)号：US20110081067A1
公开(公告)日：2011-04-07
申请号：US12995679
申请日：2009-05-29
申请人： Jinghan Ye , Hongjie Liang , John Vesel , David Sowards-Emmerd , Lingxiong Shao , Jody L. Garrard
发明人： Jinghan Ye , Hongjie Liang , John Vesel , David Sowards-Emmerd , Lingxiong Shao , Jody L. Garrard
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B6/037 , A61B6/466 , A61B6/503 , A61B6/5235 , A61B6/541 , G01T1/1611
摘要： A method and apparatus of image reconstruction attenuation correction in PET or SPECT cardiac imaging is provided. A volumetric attenuation imaging scan by an X-ray source may be used to generate a gamma ray attenuation map. The volumetric attenuation imaging scan may be randomized, and may be performed while the imaged subject is breathing.
摘要翻译： 提供PET或SPECT心脏成像中图像重建衰减校正的方法和装置。 可以使用X射线源的体积衰减成像扫描来产生伽马射线衰减图。 体积衰减成像扫描可以是随机化的，并且可以在成像对象呼吸时执行。
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公开(公告)号：US08965082B2
公开(公告)日：2015-02-24
申请号：US13511676
申请日：2010-11-18
CPC分类号： G06T7/0026 , G06T7/32 , G06T11/008 , G06T2200/32 , G06T2207/10081 , G06T2207/10088
摘要： A method of aligning multiple volumetric sections of imaging data is provided. The method comprises aligning a primary volumetric section and a secondary volumetric section which is adjacent to the primary volumetric imaging section, for moving the secondary volumetric section into alignment with the primary volumetric section. A related apparatus for performing the method is also provided.
摘要翻译： 提供了一种对准成像数据的多个体积部分的方法。 该方法包括对准主体积部分和与主体积成像部分相邻的次要体积部分，用于将次体积部分移动成与主体积部分对准。 还提供了一种用于执行该方法的相关装置。
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公开(公告)号：US20140014828A1
公开(公告)日：2014-01-16
申请号：US14007755
申请日：2012-04-02
IPC分类号： G06T11/00
CPC分类号： G06T11/005 , A61B5/0035 , A61B6/032 , A61B6/037 , A61B6/06 , A61B6/4085 , A61B6/4291 , A61B6/4417 , A61B6/5205 , A61B6/582 , F04C2270/041
摘要： A method comprises: acquiring imaging data using a tomographic radiological imaging apparatus (10); updating a calibration (42, 52) based on current information about the imaging apparatus; calibrating the imaging data using the up-to-date calibration; and reconstructing the calibrated imaging data to generate an image. The updating may be based on a current state of an idle or parked imaging modality that is not used in acquiring the imaging data, or on a measurement acquired together with the imaging data, or on the imaging data itself. For cone-beam computed tomography (CBCT) imaging data, the updating may comprise determining an intensity scale based upon intensity of at least one air pixel measured during the acquiring of the CBCT imaging data and updating an air scan template (60) by the intensity scale.
摘要翻译： 一种方法包括：使用断层摄影放射成像装置（10）获取成像数据; 基于关于成像设备的当前信息来更新校准（42,42）; 使用最新校准来校准成像数据; 并重构校准的成像数据以产生图像。 该更新可以基于在获取成像数据时不使用的空闲或停放的成像模式的当前状态，或者与成像数据一起获取的测量值，或者基于成像数据本身。 对于锥束计算机断层摄影（CBCT）成像数据，更新可以包括基于在获取CBCT成像数据期间测量的至少一个空气像素的强度来确定强度标度，并且将空气扫描模板（60）更新强度 规模。
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公开(公告)号：US20120288177A1
公开(公告)日：2012-11-15
申请号：US13511676
申请日：2010-11-18
IPC分类号： G06K9/32
CPC分类号： G06T7/0026 , G06T7/32 , G06T11/008 , G06T2200/32 , G06T2207/10081 , G06T2207/10088
摘要： A method of aligning multiple volumetric sections of imaging data is provided. The method comprises aligning a primary volumetric section and a secondary volumetric section which is adjacent to the primary volumetric imaging section, for moving the secondary volumetric section into alignment with the primary volumetric section. A related apparatus for performing the method is also provided.
摘要翻译： 提供了一种对准成像数据的多个体积部分的方法。 该方法包括对准主体积部分和与主体积成像部分相邻的次要体积部分，用于将次体积部分移动成与主容积部分对准。 还提供了一种用于执行该方法的相关装置。
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公开(公告)号：US09466133B2
公开(公告)日：2016-10-11
申请号：US14124289
申请日：2012-05-23
CPC分类号： G06T11/005 , A61B6/032 , A61B6/037 , A61B6/5205 , A61B6/5217 , A61B6/5235 , G06T11/008
摘要： A hybrid imaging system including a first imaging system configured to acquire low resolution anatomical data of a first field of view of an anatomical structure. A second imaging system is configured to acquire functional data of the first field of view of the anatomical structure. A reconstruction processor is configured to reconstruct the functional data based on attenuation data into an attenuation corrected image. In response to the attenuation corrected image showing regions of interest, with the first imaging system or another imaging system acquiring high resolution data of one or more portions of the first field of view containing the regions of interest. The reconstruction processor reconstructs the high resolution anatomical data into one or more high resolution images of the regions of interest.
摘要翻译： 一种混合成像系统，包括被配置为获取解剖结构的第一视野的低分辨率解剖学数据的第一成像系统。 第二成像系统被配置为获取解剖结构的第一视野的功能数据。 重构处理器被配置为基于衰减数据将功能数据重建成衰减校正图像。 响应于示出感兴趣区域的衰减校正图像，利用第一成像系统或另一成像系统获取包含感兴趣区域的第一视野的一个或多个部分的高分辨率数据。 重构处理器将高分辨率解剖数据重建成感兴趣区域的一个或多个高分辨率图像。
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公开(公告)号：US09299171B2
公开(公告)日：2016-03-29
申请号：US14007755
申请日：2012-04-02
CPC分类号： G06T11/005 , A61B5/0035 , A61B6/032 , A61B6/037 , A61B6/06 , A61B6/4085 , A61B6/4291 , A61B6/4417 , A61B6/5205 , A61B6/582 , F04C2270/041
摘要： A method comprises: acquiring imaging data using a tomographic radiological imaging apparatus (10); updating a calibration (42, 52) based on current information about the imaging apparatus; calibrating the imaging data using the up-to-date calibration; and reconstructing the calibrated imaging data to generate an image. The updating may be based on a current state of an idle or parked imaging modality that is not used in acquiring the imaging data, or on a measurement acquired together with the imaging data, or on the imaging data itself. For cone-beam computed tomography (CBCT) imaging data, the updating may comprise determining an intensity scale based upon intensity of at least one air pixel measured during the acquiring of the CBCT imaging data and updating an air scan template (60) by the intensity scale.
摘要翻译： 一种方法包括：使用断层摄影放射成像装置（10）获取成像数据; 基于关于成像设备的当前信息来更新校准（42,42）; 使用最新校准来校准成像数据; 并重构校准的成像数据以产生图像。 该更新可以基于在获取成像数据时不使用的空闲或停放的成像模式的当前状态，或者与成像数据一起获取的测量值，或者基于成像数据本身。 对于锥束计算机断层摄影（CBCT）成像数据，更新可以包括基于在获取CBCT成像数据期间测量的至少一个空气像素的强度来确定强度标度，并且将空气扫描模板（60）更新强度 规模。
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公开(公告)号：US09153012B2
公开(公告)日：2015-10-06
申请号：US13989152
申请日：2011-11-22
CPC分类号： G06T5/00 , A61B6/5258 , G06T5/50 , G06T11/008 , G06T2207/10072
摘要： When correcting for artifacts on an attenuation map caused by an artifact source in a computed tomography image, nuclear images are reconstructed two or more times, each time using a different correction technique or uncorrected attenuation data. Corresponding voxels in the reconstructed images are compared to identify local areas that change, i.e., are fragile and therefore low-confidence, and areas that do not vary or exhibit little variance among the plurality of reconstructed images and are thus accorded a higher confidence. The reconstructed nuclear image is overlaid with color encoding indicative of the amount of confidence accorded to each voxel value obtained by attenuation-corrected tomographic reconstruction.
摘要翻译： 当在计算机断层摄影图像中由伪像源引起的衰减图上的伪像进行校正时，每次使用不同的校正技术或未校正的衰减数据重建两次或更多次的核图像。 将重构图像中的相应体素进行比较，以识别改变的局部区域，即易碎且因此低置信度，以及在多个重建图像之间不变化或显示很小变化的区域，并因此赋予更高的置信度。 重建的核图像用表示通过衰减校正的断层摄影重建获得的每个体素值的置信度的颜色编码来叠加。
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