发明名称 |
MOVABLE WEDGE FOR IMPROVED IMAGE QUALITY IN 3D X-RAY IMAGING |
摘要 |
When generating a 3D image of a subject or patient, a cone beam X-ray source (20a, 20b) is mounted to a rotatable gantry (14) opposite an offset flat panel X-ray detector (22a, 22b). A wedge-shaped attenuation filter (24a, 24b) of suitable material (e.g., aluminum or the like) is adjustably positioned in the cone beam to selectively attenuate the beam as a function of the shape, size, and density of a volume of interest (18) through which X-rays pass in order to maintain X-ray intensity or gain at a relatively constant level within a range of acceptable levels. |
申请公布号 |
EP2222227(A2) |
申请公布日期 |
2010.09.01 |
申请号 |
EP20080850089 |
申请日期 |
2008.11.04 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V.;PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH |
发明人 |
BERTRAM, MATTHIAS;WIEGERT, JENS;VESEL, JOHN, F.;SOWARDS-EMMERD, DAVID;PETRILLO, MICHAEL, J. |
分类号 |
A61B6/03;G21K3/00 |
主分类号 |
A61B6/03 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|