公开(公告)号：US20070116344A1

公开(公告)日：2007-05-24

申请号：US11286919

申请日：2005-11-23

申请人： Jiang Hsieh ,  Albert Henry Lonn ,  Mark Nyka

发明人： Jiang Hsieh ,  Albert Henry Lonn ,  Mark Nyka

IPC分类号： G06K9/00

CPC分类号： A61B6/032 ,  A61B6/4085 ,  A61B6/5235 ,  A61B6/583 ,  G06T11/005 ,  G06T2211/432

摘要： A method for expanding a field-of-view of a volumetric computed tomography scan comprises identifying truncated views having projection truncation and non-truncated views without projection truncation based on an average value of one or more edge channels. An estimated missing projection is calculated for each of the truncated views based on at least one neighboring non-truncated view. A projection profile is calculated for each of the truncated views based on the estimated missing projection, and the projection profile provides at least one of attenuation data and projection data for an area outside a field-of-view.

摘要翻译： 用于扩展体积计算机断层摄影扫描的视野的方法包括基于一个或多个边缘通道的平均值来识别具有投影截断和非截断视图的截断视图而不进行投影截断。 基于至少一个相邻非截断视图为每个截断的视图计算估计的丢失投影。 基于估计的丢失投影，针对每个截断的视图计算投影轮廓，并且投影轮廓提供用于视场外的区域的衰减数据和投影数据中的至少一个。

公开(公告)号：US08553959B2

公开(公告)日：2013-10-08

申请号：US12053370

申请日：2008-03-21

申请人： Jiang Hsieh ,  James George Colsher ,  Albert Henry Lonn ,  Alexander Ganin ,  Jean-Baptiste Thibault

发明人： Jiang Hsieh ,  James George Colsher ,  Albert Henry Lonn ,  Alexander Ganin ,  Jean-Baptiste Thibault

IPC分类号： G06K9/00

CPC分类号： A61B6/032 ,  A61B6/037 ,  A61B6/5235

摘要： A method for correcting Positron Emission Tomography (PET) data includes adjusting a tube current generated by the CT imaging system to a second tube current value that is less than a first tube current value used to generate diagnostic quality CT images, and imaging the patient with the CT imaging system set at the second tube current value. The method also includes generating a plurality of computed tomography (CT) projection data from the CT imaging system and preprocessing the CT projection data to generate preprocessed CT projection data. The method further includes filtering the preprocessed CT projection data to reduce electronic noise to generate filtered CT projection data, and performing a minus logarithmic operation on the filtered CT projection data to generate the corrected PET data.

摘要翻译： 用于校正正电子发射断层摄影（PET）数据的方法包括将由CT成像系统产生的管电流调节到小于用于产生诊断质量CT图像的第一管电流值的第二管电流值，以及使患者成像 CT成像系统设置在第二管电流值。 该方法还包括从CT成像系统生成多个计算机断层摄影（CT）投影数据，并预处理CT投影数据以产生预处理的CT投影数据。 该方法还包括对预处理的CT投影数据进行滤波以减少电子噪声以产生经滤波的CT投影数据，以及对经滤波的CT投影数据执行负对数运算以产生经校正的PET数据。

公开(公告)号：US20090238427A1

公开(公告)日：2009-09-24

申请号：US12053370

申请日：2008-03-21

申请人： Jiang Hsieh ,  James George Colsher ,  Albert Henry Lonn ,  Alexander Ganin ,  Jean-Baptiste Thibault

发明人： Jiang Hsieh ,  James George Colsher ,  Albert Henry Lonn ,  Alexander Ganin ,  Jean-Baptiste Thibault

IPC分类号： A61B6/00

CPC分类号： A61B6/032 ,  A61B6/037 ,  A61B6/5235

摘要： A method for correcting Positron Emission Tomography (PET) data includes adjusting a tube current generated by the CT imaging system to a second tube current value that is less than a first tube current value used to generate diagnostic quality CT images, and imaging the patient with the CT imaging system set at the second tube current value. The method also includes generating a plurality of computed tomography (CT) projection data from the CT imaging system and preprocessing the CT projection data to generate preprocessed CT projection data. The method further includes filtering the preprocessed CT projection data to reduce electronic noise to generate filtered CT projection data, and performing a minus logarithmic operation on the filtered CT projection data to generate the corrected PET data.

摘要翻译： 用于校正正电子发射断层摄影（PET）数据的方法包括将由CT成像系统产生的管电流调节到小于用于产生诊断质量CT图像的第一管电流值的第二管电流值，以及使患者成像 CT成像系统设置在第二管电流值。 该方法还包括从CT成像系统生成多个计算机断层摄影（CT）投影数据，并预处理CT投影数据以产生预处理的CT投影数据。 该方法还包括对预处理的CT投影数据进行滤波以减少电子噪声以产生经滤波的CT投影数据，以及对经滤波的CT投影数据执行负对数运算以产生经校正的PET数据。