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1. 发明授权

US5841830A 3D CT fluoroscopy 失效
标题翻译： 3D CT透视
公开(公告)号：US5841830A
公开(公告)日：1998-11-24
申请号：US802618
申请日：1997-02-19
申请人： John J. Barni , Kenneth L. Freeman , Gary A. Kaufmann , Darrell M. Smith
发明人： John J. Barni , Kenneth L. Freeman , Gary A. Kaufmann , Darrell M. Smith
IPC分类号： A61B6/03 , G06T1/00 , G06T11/00
CPC分类号： A61B6/032 , A61B6/4085 , G06T11/005 , A61B10/0233 , A61B6/027 , A61B90/11 , G06T2211/428 , Y10S378/901
摘要： A radiation source which generates a radiation cone-beam (14) and a two-dimensional radiation detector are spiralled continuously around and longitudinally relative to an imaging volume. Image data from the two-dimensional display is reconstructed (30.sub.1, 30.sub.2, . . . 30.sub.n) into a volumetric, physiological image stored in a subject memory (32). During an interventional surgical procedure with a surgical instrument (42), the x-ray source is gated to operate intermittently, e.g., at 60.degree. angular intervals, at a reduced radiation intensity by an x-ray tube control (40). The additional data is reconstructed into a three-dimensional image representation of the surgical instrument and stored in an instrument memory (34). An operator image selection processor (60) causes data retrieval circuits (62a, 62b) to retrieve like slices or other image representations from the subject and instrument memories. The retrieved data is combined (64) such that a resultant human-readable display (68) shows the instrument superimposed on the anatomical image. The surgical instrument volumetric image is continuously updated such that the display represents a real time display of the surgical instrument illustrating its advancement through the imaging region.
摘要翻译：产生辐射锥形束（14）和二维辐射检测器的辐射源相对于成像体积连续地围绕并且纵向地螺旋化。来自二维显示器的图像数据被重建（301,302，...，30n）成存储在被摄体存储器（32）中的体积生理图像。在用外科器械（42）进行的介入手术过程中，x射线源通过X射线管控制（40）以较低的辐射强度选通间歇地操作，例如以60°角间隔进行操作。附加数据被重建成手术器械的三维图像表示并存储在仪器存储器（34）中。操作员图像选择处理器（60）使得数据检索电路（62a，62b）从对象和仪器存储器中检索类似的切片或其他图像表示。所检索的数据被组合（64），使得所得到的人类可读显示器（68）示出了叠加在解剖图像上的仪器。手术器械体积图像被连续地更新，使得显示器表示外科器械的实时显示，说明其通过成像区域的进展。

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