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1. 发明授权

US06061420A Methods and apparatus for graphical Rx in a multislice imaging system 有权
标题翻译：用于多层成像系统中图形化Rx的方法和装置
公开(公告)号：US06061420A
公开(公告)日：2000-05-09
申请号：US139990
申请日：1998-08-25
申请人： Gary R. Strong , Bob L. Beckett , Holly A. McDaniel , Kathryn M. Littlejohn , Steven M. Zanoni
发明人： Gary R. Strong , Bob L. Beckett , Holly A. McDaniel , Kathryn M. Littlejohn , Steven M. Zanoni
IPC分类号： G06T11/00 , A61B6/00
CPC分类号： A61B6/488 , A61B6/469 , G06T11/005 , A61B6/027 , A61B6/467 , Y10S378/901
摘要： Methods and apparatus for a multislice graphic Rx display which, in one embodiment, determines a true image location in the Z axis, selects a the correct scan data for image generation, and if a scan is initiated via the GUI or via graphic Rx, determines the affect on the ISO center and DFOV, are described. More particularly, the system determines the offset from the scan plane for each image plane, so that the true image location in Z is displayed. The image offset from the scan plane is a function of the detector row thickness, the number of detector rows, the scan pitch (helical scanning only), the image thickness, and the gantry tilt angle. Further, the image thickness is selected by the user via the GUI, and constrains the image interval which is displayed on the graphic Rx display. Based on image thickness and image interval, the correct scan data is selected so that images are generated at locations exactly matching those shown on the graphic Rx display. Also, if a scan is prescribed either via the GUI or graphic Rx display, the affect on ISO center and DFOV is determined. This information is automatically updated on the graphic Rx display by modifying the cut-line position up/down to show ISO affect and by modifying the cut-line length to show DFOV.
摘要翻译：用于多层图形Rx显示器的方法和装置，其在一个实施例中确定Z轴中的真实图像位置，选择用于图像生成的正确扫描数据，并且如果经由GUI或经由图形Rx启动扫描，则确定描述了对ISO中心和DFOV的影响。更具体地，系统确定针对每个图像平面的从扫描平面的偏移，使得显示Z中的真实图像位置。从扫描平面偏移的图像是检测器行厚度，检测器行数，扫描间距（仅螺旋扫描），图像厚度和台架倾斜角的函数。此外，用户经由GUI选择图像厚度，并且限制在图形Rx显示器上显示的图像间隔。基于图像厚度和图像间隔，选择正确的扫描数据，以便在与图形Rx显示屏上显示的位置完全匹配的位置生成图像。此外，如果通过GUI或图形Rx显示来规定扫描，则确定对ISO中心和DFOV的影响。通过修改剪切线位置上/下以显示ISO影响并通过修改剪切线长度显示DFOV，可以在图形Rx显示屏上自动更新该信息。

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