专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5570404A Method and apparatus for editing abdominal CT angiographic images for blood vessel visualization 失效
标题翻译：用于编辑腹部CT血管造影图像用于血管可视化的方法和装置
公开(公告)号：US5570404A
公开(公告)日：1996-10-29
申请号：US315524
申请日：1994-09-30
申请人： Cheng-Chung Liang , Ajit Singh , Ming-Yee Chiu , Jay Ezrielev , Richard Fisler , Dietmar Hentschel
发明人： Cheng-Chung Liang , Ajit Singh , Ming-Yee Chiu , Jay Ezrielev , Richard Fisler , Dietmar Hentschel
IPC分类号： A61B6/00 , G06T5/00 , A61B6/03
CPC分类号： A61B6/504 , G06T7/0012 , G06T7/0081 , G06T2207/10081 , G06T2207/30101 , Y10S378/901
摘要： A method for automatically editing a plurality of CT image slices to provide a three dimensional view of a selected object located within a patient's body comprises providing at least one slab of CT image slices produced by CT scanning system and computing a top MIP image of the slab. An undesirable object is automatically removed from the top MIP image by first detecting all the pixels having illuminating intensity values which represent the undesirable object. Then all the pixels of the object to be removed are set to a substantially zero illuminating intensity value in order to remove the object from the top MIP image of the slab. After the undesirable object is removed from the top MIP image, the edits made thereto are applied to each CT image slice in the slab. The present invention also includes apparatus for performing a 3D reconstruction of CT angiographic images to visualize a selected object located within a patient's body. The apparatus comprises an x-ray tube for projecting energy into a layer of interest in the patient's body and a detector for detecting changes in the projected energy as it exits the layer of interest. The changes detected in the projected energy are indicative of various objects including the selected object that are located within the layer of interest of the patient's body. Moreover, the x-ray tube and detector operate in conjunction to provide at least one slab of CT image slices.
摘要翻译：一种用于自动编辑多个CT图像切片以提供位于患者体内的所选对象的三维视图的方法包括提供由CT扫描系统产生的至少一个CT图像切片并计算平板的顶部MIP图像。通过首先检测具有表示不需要的物体的照明强度值的所有像素，从顶部MIP图像自动地去除不需要的物体。然后将要去除的对象的所有像素设置为基本为零的照明强度值，以便从板的顶部MIP图像中移除物体。在从MIP顶部图像移除不需要的物体之后，对其进行的编辑被应用于板坯中的每个CT图像切片。本发明还包括用于执行CT血管造影图像的3D重建以使位于患者身体内的所选对象可视化的装置。该装置包括用于将能量投射到患者体内感兴趣的层中的X射线管，以及用于检测投射能量离开感兴趣层时的能量变化的检测器。在投影能量中检测到的变化表示包括位于患者身体的感兴趣层内的所选对象的各种对象。此外，X射线管和检测器联合工作以提供至少一个CT图像片的平板。

IPRDB

热门服务

关于我们

友情链接

联系方式