公开(公告)号：US5799057A

公开(公告)日：1998-08-25

申请号：US773083

申请日：1996-12-26

申请人： David M. Hoffman ,  Michael Thomas Mruzek ,  August O. Englert

发明人： David M. Hoffman ,  Michael Thomas Mruzek ,  August O. Englert

IPC分类号： G01T1/20 ,  A61B6/03 ,  A61B6/06 ,  G01N23/04 ,  G01T7/00 ,  G21K1/00

CPC分类号： A61B6/032 ,  A61B6/06 ,  A61B6/4291 ,  G01N23/046 ,  G01N2223/419

摘要： The present invention, in one form, is a scatter collimator for a computed tomography system including an x-ray source. The scatter collimator is positioned between a detector array and an object to be imaged. The scatter collimator includes a housing, a plurality of attenuating blades and a plurality of attenuating wires. The blades and wires are mounted to the housing, and oriented substantially perpendicular to each other. Particularly, the blades and wires form a two-dimensional shielding grid. The blades also are oriented so that they are radially and focally aligned with the x-ray source. A detector element of the detector array is secured to the housing so that the blades and wires are between the detector element and the x-ray source. The detector element, in one form, includes a scintillation element which is coated with a light-retaining material.

公开(公告)号：US6134301A

公开(公告)日：2000-10-17

申请号：US102459

申请日：1998-06-22

申请人： Michael Thomas Mruzek ,  David M. Hoffman

发明人： Michael Thomas Mruzek ,  David M. Hoffman

IPC分类号： G01T1/20 ,  A61B6/03 ,  A61B6/06 ,  G01N23/04 ,  G01T7/00 ,  G21K1/02

CPC分类号： A61B6/032 ,  A61B6/06 ,  A61B6/4291 ,  G01N23/046 ,  G01N2223/419

摘要： The present invention, in one form, is a scatter collimator for a computed tomography system including an x-ray source. The scatter collimator is positioned between a detector array and an object to be imaged. The scatter collimator includes a housing, a plurality of attenuating blades and a plurality of attenuating wires. The blades and wires are mounted to the housing, and oriented substantially perpendicular to each other. Particularly, the blades and wires form a two-dimensional shielding grid. The blades also are oriented so that they are radially and focally aligned with the x-ray source. A detector element of the detector array is secured to the housing so that the blades and wires are between the detector element and the x-ray source. The detector element, in one form, includes a scintillation element which is coated with a light-retaining material.

摘要翻译： 本发明以一种形式是用于包括X射线源的计算机断层摄影系统的散射准直仪。 散射准直仪位于检测器阵列和待成像对象之间。 散射准直仪包括壳体，多个衰减叶片和多个衰减线。 叶片和线被安装到壳体上并且基本上彼此垂直地定向。 特别地，叶片和线形成二维屏蔽网格。 叶片也被定向成使得它们与x射线源径向地和焦点地对准。 检测器阵列的检测器元件固定到壳体上，使得刀片和线材位于检测器元件和X射线源之间。 一种形式的检测器元件包括涂有光保持材料的闪烁元件。