公开(公告)号：WO2007044417A3

公开(公告)日：2008-07-03

申请号：PCT/US2006038832

申请日：2006-10-04

Applicant: IMAGING SCIENCES INTERNATIONAL ,  KIA OMID E ,  SINGH ARUN B ,  MARANDOLA EDWARD J ,  MUNDRY UWE

Inventor： KIA OMID E ,  SINGH ARUN B ,  MARANDOLA EDWARD J ,  MUNDRY UWE

IPC: G03C5/16

CPC classification number: G01N23/04 ,  A61B6/5282 ,  A61B6/583 ,  G01N2223/045

Abstract: In one embodiment of a method of and apparatus for correcting for scatter, an object, which may be the jaw of a dental patient, is subjected to x-rays or other penetrating radiation. An intensity distribution of the transmitted radiation is detected. A first array of voxel data representing the absorption of the radiation by the object is reconstructed from the detected intensity. A radiation scatter pattern is calculated by forward projection from the first array using one or more point spread functions. The detected intensity is corrected using the calculated radiation scatter pattern. A second array of voxel data representing the absorption of the radiation by the object is reconstructed from the corrected detected intensity.

Abstract translation: 在用于校正散射的方法和装置的一个实施例中，可以是牙科患者的颌骨的物体经受x射线或其它穿透辐射。 检测发射辐射的强度分布。 从检测到的强度重建表示物体对辐射的吸收的体素数据的第一阵列。 通过使用一个或多个点扩展函数从第一阵列向前投影来计算辐射散射图案。 使用所计算的辐射散射图来校正检测到的强度。 从校正的检测强度重建表示物体对辐射的吸收的体素数据的第二阵列。

公开(公告)号：WO2007044417A2

公开(公告)日：2007-04-19

申请号：PCT/US2006/038832

申请日：2006-10-04

Applicant: IMAGING SCIENCES INTERNATIONAL, INC. ,  KIA, Omid, E. ,  SINGH, Arun, B. ,  MARANDOLA, Edward, J. ,  MUNDRY, Uwe

Inventor： KIA, Omid, E. ,  SINGH, Arun, B. ,  MARANDOLA, Edward, J. ,  MUNDRY, Uwe

IPC: H05G1/60 ,  A61B6/00 ,  G01N23/00 ,  G21K1/12

CPC classification number: G01N23/04 ,  A61B6/5282 ,  A61B6/583 ,  G01N2223/045

Abstract: In one embodiment of a method of and apparatus for correcting for scatter, an object, which may be the jaw of a dental patient, is subjected to x-rays or other penetrating radiation. An intensity distribution of the transmitted radiation is detected. A first array of voxel data representing the absorption of the radiation by the object is reconstructed from the detected intensity. A radiation scatter pattern is calculated by forward projection from the first array using one or more point spread functions. The detected intensity is corrected using the calculated radiation scatter pattern. A second array of voxel data representing the absorption of the radiation by the object is reconstructed from the corrected detected intensity.

Abstract translation: 在用于校正散射的方法和装置的一个实施例中，可以是牙科患者的颌骨的物体经受x射线或其它穿透辐射。 检测发射辐射的强度分布。 从检测到的强度重建表示物体对辐射的吸收的体素数据的第一阵列。 通过使用一个或多个点扩展函数从第一阵列向前投影来计算辐射散射图案。 使用所计算的辐射散射图来校正检测到的强度。 从校正的检测强度重建代表物体对辐射的吸收的体素数据的第二阵列。