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1. 发明授权

US07085342B2 Method for tracking motion phase of an object for correcting organ motion artifacts in X-ray CT systems 失效
标题翻译：跟踪X射线CT系统中器官运动伪像的物体运动相位的方法
公开(公告)号：US07085342B2
公开(公告)日：2006-08-01
申请号：US10829185
申请日：2004-04-22
申请人： Waheed Younis , Storgios Stergiopoulos
发明人： Waheed Younis , Storgios Stergiopoulos
IPC分类号： G01N23/00
CPC分类号： G06T11/005 , A61B6/027 , G06T2211/412
摘要： The present invention relates to a method for tracking motion phase of an object. A plurality of projection data indicative of a cross-sectional image of the object is received. The projection data are processed for determining motion projection data of the object indicative of motion of the object based on the attenuation along at least a same line through the object at different time instances. A motion phase of the object with the object having the least motion is selected. Finally, projection data acquired at time instances within the selected motion phase of the object are selected for tomographical image reconstruction. Reconstructed images clearly show a substantial improvement in image quality by successfully removing motion artifacts using the method for tracking motion phase of an object according to the invention. The method is highly beneficial in cardiac imaging using X-ray CT scan.
摘要翻译：本发明涉及一种跟踪物体运动相位的方法。接收表示对象的横截面图像的多个投影数据。处理投影数据，用于基于在不同时间实例沿着至少相同的线穿过对象的衰减来确定指示对象的运动的对象的运动投影数据。选择具有最小运动的物体的物体的运动相位。最后，选择在对象的所选运动阶段内的时间实例获取的投影数据用于层析图像重建。通过使用根据本发明的跟踪运动相位的方法成功地去除运动伪影，重建的图像清楚地显示出图像质量的显着改善。该方法在使用X射线CT扫描的心脏成像中是非常有益的。

2. 发明申请

US20050238135A1 Method for tracking motion phase of an object for correcting organ motion artifacts in X-ray CT systems 失效
标题翻译：跟踪X射线CT系统中器官运动伪像的物体运动相位的方法
公开(公告)号：US20050238135A1
公开(公告)日：2005-10-27
申请号：US10829185
申请日：2004-04-22
申请人： Waheed Younis , Storgios Stergiopoulos
发明人： Waheed Younis , Storgios Stergiopoulos
IPC分类号： A61B6/00 , G21K1/12
CPC分类号： G06T11/005 , A61B6/027 , G06T2211/412
摘要： The present invention relates to a method for tracking motion phase of an object. A plurality of projection data indicative of a cross-sectional image of the object is received. The projection data are processed for determining motion projection data of the object indicative of motion of the object based on the attenuation along at least a same line through the object at different time instances. A motion phase of the object with the object having the least motion is selected. Finally, projection data acquired at time instances within the selected motion phase of the object are selected for tomographical image reconstruction. Reconstructed images clearly show a substantial improvement in image quality by successfully removing motion artifacts using the method for tracking motion phase of an object according to the invention. The method is highly beneficial in cardiac imaging using X-ray CT scan.
摘要翻译：本发明涉及一种跟踪物体运动相位的方法。接收表示对象的横截面图像的多个投影数据。处理投影数据，用于基于在不同时间实例沿着至少相同的线穿过对象的衰减来确定指示对象的运动的对象的运动投影数据。选择具有最小运动的物体的物体的运动相位。最后，选择在对象的所选运动阶段内的时间实例获取的投影数据用于层析图像重建。通过使用根据本发明的跟踪运动相位的方法成功地去除运动伪影，重建的图像清楚地显示出图像质量的显着改善。该方法在使用X射线CT扫描的心脏成像中是非常有益的。

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