发明申请
US20100308229A1 MOVABLE WEDGE FOR IMPROVED IMAGE QUALITY IN 3D X-RAY IMAGING
有权
在3D X射线成像中改善图像质量的可移动楔形
- 专利标题: MOVABLE WEDGE FOR IMPROVED IMAGE QUALITY IN 3D X-RAY IMAGING
- 专利标题(中): 在3D X射线成像中改善图像质量的可移动楔形
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申请号: US12740366申请日: 2008-11-04
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公开(公告)号: US20100308229A1公开(公告)日: 2010-12-09
- 发明人: Matthias Bertram , Jens Wiegert , John F. Vesel , David Sowards-Emmerd , Michael J. Petrilo
- 申请人: Matthias Bertram , Jens Wiegert , John F. Vesel , David Sowards-Emmerd , Michael J. Petrilo
- 申请人地址: NL EINDHOVEN
- 专利权人: KONINKLIJKE PHILIPS ELECTRONICS N.V.
- 当前专利权人: KONINKLIJKE PHILIPS ELECTRONICS N.V.
- 当前专利权人地址: NL EINDHOVEN
- 国际申请: PCT/IB08/54589 WO 20081104
- 主分类号: G01T1/166
- IPC分类号: G01T1/166 ; G21K1/10 ; A61B6/00
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.