公开(公告)号：US07336760B2

公开(公告)日：2008-02-26

申请号：US11495838

申请日：2006-07-28

申请人： Gary Virshup ,  Roland Suri ,  Edward Seppi ,  Edward Shapiro ,  Josh Star-Lack ,  Erik William Chell

发明人： Gary Virshup ,  Roland Suri ,  Edward Seppi ,  Edward Shapiro ,  Josh Star-Lack ,  Erik William Chell

IPC分类号： G01N23/00

CPC分类号： A61B6/032 ,  A61B6/06 ,  A61B6/5205 ,  A61B6/5282 ,  A61B6/583 ,  G06T11/005 ,  Y10S378/901

摘要： Disclosed are imaging systems, methods, and computer program products that generate estimates of scattered radiation in tomographic imaging systems, such as cone-beam computerized tomography (CBCT) systems, and the like. In an exemplary embodiment, a first group of projections is taken of an object with the radiation covering a wide band of the object, and a second group of projections is taken of the object with the radiation covering a narrower band of the object. The projections of the second group cover less of the object, but have less scattered radiation. The scattered radiation within the narrower band may be estimated from differences between projections from the first and second groups, or from representations thereof.

摘要翻译： 公开了成像系统，方法和计算机程序产品，其产生诸如锥束计算机断层摄影（CBCT）系统的断层成像系统中散射辐射的估计。 在一个示例性实施例中，第一组投影物被取出为具有覆盖物体的宽带的辐射的物体，并且第二组突起被取出，物体的辐射覆盖物体的较窄带。 第二组的投影覆盖较少的物体，但辐射散射较少。 可以从第一组和第二组的投影之间的差异或其表示来估计较窄频带内的散射辐射。

公开(公告)号：US20080025458A1

公开(公告)日：2008-01-31

申请号：US11495838

申请日：2006-07-28

申请人： Gary Virshup ,  Roland Suri ,  Edward Seppi ,  Edward Shapiro ,  Josh Star-Lack ,  Erik William Chell

发明人： Gary Virshup ,  Roland Suri ,  Edward Seppi ,  Edward Shapiro ,  Josh Star-Lack ,  Erik William Chell

IPC分类号： A61B6/00 ,  G01D18/00 ,  G01N23/00 ,  G21K1/12 ,  H05G1/60

CPC分类号： A61B6/032 ,  A61B6/06 ,  A61B6/5205 ,  A61B6/5282 ,  A61B6/583 ,  G06T11/005 ,  Y10S378/901

摘要： Disclosed are imaging systems, methods, and computer program products that generate estimates of scattered radiation in tomographic imaging systems, such as cone-beam computerized tomography (CBCT) systems, and the like. In an exemplary embodiment, a first group of projections is taken of an object with the radiation covering a wide band of the object, and a second group of projections is taken of the object with the radiation covering a narrower band of the object. The projections of the second group cover less of the object, but have less scattered radiation. The scattered radiation within the narrower band may be estimated from differences between projections from the first and second groups, or from representations thereof.

摘要翻译： 公开了成像系统，方法和计算机程序产品，其产生诸如锥束计算机断层摄影（CBCT）系统的断层成像系统中散射辐射的估计。 在一个示例性实施例中，第一组投影物被取出为具有覆盖物体的宽带的辐射的物体，并且第二组突起被取出，物体的辐射覆盖物体的较窄带。 第二组的投影覆盖较少的物体，但辐射散射较少。 可以从第一组和第二组的投影之间的差异或其表示来估计较窄频带内的散射辐射。