公开(公告)号：US20100086101A1

公开(公告)日：2010-04-08

申请号：US12518334

申请日：2007-12-18

申请人： Kris Filip Johan Jules Thielemans ,  Charalampos Panos Tsoumpas ,  Floribertus P. M. Heukensfeldt Jansen

发明人： Kris Filip Johan Jules Thielemans ,  Charalampos Panos Tsoumpas ,  Floribertus P. M. Heukensfeldt Jansen

IPC分类号： H05G1/60 ,  G06K9/00

CPC分类号： G01T1/1647 ,  G06T11/005

摘要： The method calculates a scatter estimate for scatter correction of detection data from a subject in a positron emission tomographic scanner. The detection data represent the scattered events and unscattered events of annihilation photons emitted in the subject. The method uses the following steps: determine an estimate of the unscattered events; determine a simulation of the scattered events; determine a value of a scaling factor by fitting the sum of the estimate of the unscattered events and a product of the scaling factor and the simulation of the scattered events to the detection data; and determine the scatter estimate as the product of the scaling factor having said value and the simulation of the scattered events.

摘要翻译： 该方法计算用于正电子发射断层摄影扫描仪中来自被摄体的检测数据的散射校正的散射估计。 检测数据表示在受试者中发射的湮灭光子的分散事件和不受散射的事件。 该方法使用以下步骤：确定未分散事件的估计; 确定分散事件的模拟; 通过将未散射事件的估计和缩放因子的乘积和分散事件的模拟的和拟合到检测数据来确定缩放因子的值; 并将散射估计确定为具有所述值的缩放因子与散射事件的模拟的乘积。

公开(公告)号：US07902511B2

公开(公告)日：2011-03-08

申请号：US12518334

申请日：2007-12-18

申请人： Kris Filip Johan Jules Thielemans ,  Charalampos Panos Tsoumpas ,  Floribertus P. M. Heukensfeldt Jansen

发明人： Kris Filip Johan Jules Thielemans ,  Charalampos Panos Tsoumpas ,  Floribertus P. M. Heukensfeldt Jansen

IPC分类号： G01T1/164

CPC分类号： G01T1/1647 ,  G06T11/005

摘要： The method calculates a scatter estimate for scatter correction of detection data from a subject in a positron emission tomographic scanner. The detection data represent the scattered events and unscattered events of annihilation photons emitted in the subject. The method uses the following steps: determine an estimate of the unscattered events; determine a simulation of the scattered events; determine a value of a scaling factor by fitting the sum of the estimate of the unscattered events and a product of the scaling factor and the simulation of the scattered events to the detection data; and determine the scatter estimate as the product of the scaling factor having said value and the simulation of the scattered events.

摘要翻译： 该方法计算用于正电子发射断层摄影扫描仪中来自被摄体的检测数据的散射校正的散射估计。 检测数据表示在受试者中发射的湮灭光子的分散事件和不受散射的事件。 该方法使用以下步骤：确定未分散事件的估计; 确定分散事件的模拟; 通过将未散射事件的估计和缩放因子的乘积和分散事件的模拟的和拟合到检测数据来确定缩放因子的值; 并将散射估计确定为具有所述值的缩放因子与散射事件的模拟的乘积。