-
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。
-
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。
-