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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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公开(公告)号：US20130243298A1
公开(公告)日：2013-09-19
申请号：US13989152
申请日：2011-11-22
IPC分类号： G06T5/00
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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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：US20140119630A1
公开(公告)日：2014-05-01
申请号：US14124289
申请日：2012-05-23
IPC分类号： G06T11/00
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：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：US10430981B2
公开(公告)日：2019-10-01
申请号：US13881155
申请日：2011-10-20
摘要： A method includes displaying at least one of projection data or reconstructed image data having visually observable artifacts, wherein the at least one of the projection data or the reconstructed image data corresponds to an imaging examination of an object or subject and displaying, concurrently with the at least one of the projection data or the reconstructed image data, sample images with known artifacts. The method further includes identifying one or more of the sample images having artifacts similar to the visually observable artifacts in the at least one of the projection data or the reconstructed image data. The method further includes displaying information about the identified one or more of the sample images, wherein the information includes information related to mitigating the visually observable artifacts.
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公开(公告)号：US20130222430A1
公开(公告)日：2013-08-29
申请号：US13881155
申请日：2011-10-20
IPC分类号： G06T11/00
CPC分类号： G06T11/003 , G06T7/0014 , G06T2200/24 , G06T2207/10072 , G06T2207/30004
摘要： A method includes displaying at least one of projection data or reconstructed image data having visually observable artifacts, wherein the at least one of the projection data or the reconstructed image data corresponds to an imaging examination of an object or subject and displaying, concurrently with the at least one of the projection data or the reconstructed image data, sample images with known artifacts. The method further includes identifying one or more of the sample images having artifacts similar to the visually observable artifacts in the at least one of the projection data or the reconstructed image data. The method further includes displaying information about the identified one or more of the sample images, wherein the information includes information related to mitigating the visually observable artifacts.
摘要翻译： 一种方法包括显示具有视觉上可观察到的伪像的投影数据或重建图像数据中的至少一个，其中所述投影数据或重建图像数据中的至少一个对应于对象或对象的成像检查，并且与at 投影数据或重建图像数据中的至少一个，具有已知伪影的样本图像。 该方法还包括识别具有类似于投影数据或重建图像数据中的至少一个中的视觉上可观察到的伪像的人造物的一个或多个样本图像。 该方法还包括显示关于所识别的一个或多个样本图像的信息，其中所述信息包括与减轻视觉上可观察到的伪影有关的信息。
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公开(公告)号：US09761020B2
公开(公告)日：2017-09-12
申请号：US14116358
申请日：2012-05-08
申请人： Sven Prevrhal , Joerg Bredno , Amy Perkins , Patrick Olivier
发明人： Sven Prevrhal , Joerg Bredno , Amy Perkins , Patrick Olivier
CPC分类号： G06T11/005 , G06T7/20 , G06T11/006 , G06T2211/412
摘要： A nuclear imaging apparatus (8) acquires nuclear imaging data comprising events wherein each event records at least spatial localization information and a timestamp for a nuclear decay event. An event-preserving image reconstruction module (22) reconstructs the nuclear imaging data using an event-preserving reconstruction algorithm to generate an image represented as an event-preserving reconstructed image dataset (ID) comprising for each event the timestamp and at least one spatial voxel assignment. One or more structures are identified in the image and independent motion compensation is performed for each structure. In one approach, an events group is identified corresponding to the structure comprising events assigned to the structure by the event-preserving reconstructed image dataset; a time binning of the events of each events group is optimized based on a motion profile for the structure; time bin images are generated; and the structure is spatially registered in the time bin images.
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公开(公告)号：US20140119611A1
公开(公告)日：2014-05-01
申请号：US14116358
申请日：2012-05-08
申请人： Sven Prevrhal , Joerg Bredno , Amy Perkins , Patrick Olivier
发明人： Sven Prevrhal , Joerg Bredno , Amy Perkins , Patrick Olivier
CPC分类号： G06T11/005 , G06T7/20 , G06T11/006 , G06T2211/412
摘要： A nuclear imaging apparatus (8) acquires nuclear imaging data comprising events wherein each event records at least spatial localization information and a timestamp for a nuclear decay event. An event-preserving image reconstruction module (22) reconstructs the nuclear imaging data using an event-preserving reconstruction algorithm to generate an image represented as an event-preserving reconstructed image dataset (ID) comprising for each event the timestamp and at least one spatial voxel assignment. One or more structures are identified in the image and independent motion compensation is performed for each structure. In one approach, an events group is identified corresponding to the structure comprising events assigned to the structure by the event-preserving reconstructed image dataset; a time binning of the events of each events group is optimized based on a motion profile for the structure; time bin images are generated; and the structure is spatially registered in the time bin images.
摘要翻译： 核成像设备（8）获取包括事件的核成像数据，其中每个事件至少记录空间定位信息和核衰变事件的时间戳。 事件保存图像重建模块（22）使用事件保留重建算法来重构核成像数据，以生成表示为事件保留重建图像数据集（ID）的图像，所述图像包括针对每个事件的时间戳和至少一个空间体素 分配。 在图像中识别一个或多个结构，并且对每个结构执行独立的运动补偿。 在一种方法中，通过事件保存重建图像数据集来识别对应于包括分配给该结构的事件的结构的事件组; 基于结构的运动曲线优化每个事件组的事件的时间合并; 生成时间段图像; 并且该结构被空间地记录在时间段图像中。
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