公开(公告)号：US20130322718A1

公开(公告)日：2013-12-05

申请号：US13486974

申请日：2012-06-01

申请人： Yi-Hsuan KAO ,  Michael Mu Huo Teng ,  Yi-Tzu Kao

发明人： Yi-Hsuan KAO ,  Michael Mu Huo Teng ,  Yi-Tzu Kao

IPC分类号： G06K9/00

CPC分类号： G06T11/008 ,  G06T2211/404 ,  G06T2211/412

摘要： The present invention discloses a method and apparatus for measuring AIF and VOF on brain perfusion CT images. The AIF and VOF are used to calculate hemodynamic parameters. In this invention, bone voxels and neighboring voxels are removed first from the perfusion images and thus only brain voxels are included in the AIF and VOF measurement procedures; moreover, the selection criteria, such as large area under the concentration-time curve, early arrival of contrast agents, and narrow effective width, are used to select appropriate arterial and venous voxels for the AIF and VOF measurements.

摘要翻译： 本发明公开了一种脑灌注CT图像测量AIF和VOF的方法和装置。 AIF和VOF用于计算血液动力学参数。 在本发明中，首先从灌注图像中去除骨体素和相邻的体素，因此在AIF和VOF测量程序中仅包括脑体素; 此外，使用选择标准，如浓度 - 时间曲线下的大面积，造影剂的早到，狭窄的有效宽度，用于为AIF和VOF测量选择合适的动脉和静脉体素。