发明名称 |
2D/3D IMAGE REGISTRATION IN IMAGE-GUIDED RADIOSURGERY |
摘要 |
An image-guided radiosurgery method and system are presented that use 2D/3D image registration to keep the radiosurgical beams properly focused onto a treatment target. A pre-treatment 3D scan of the target is generated at or near treatment planning time. A set of 2D DRRs are generated, based on the pretreatment 3D scan. At least one 2D x-ray image of the target is generated in near real time during treatment. The DRRs are registered with the x-ray images, by computing a set of 3D transformation parameters that represent the change in target position between the 3D scan and the x-ray images. The relative position of the radiosurgical beams and the target is continuously adjusted in near real time in accordance with the 3D transformation parameters. A hierarchical and iterative 2D/3D registration algorithm is used, in which the transformation parameters that are in-plane with respect to the image plane of the x-ray images are computed separately from the out-of-plane transformation parameters. |
申请公布号 |
WO2005024721(A2) |
申请公布日期 |
2005.03.17 |
申请号 |
WO2004US27158 |
申请日期 |
2004.08.20 |
申请人 |
ACCURAY, INC.;KUDUVALLI, GOPINATH;FU, DONGSHAN;QURESHI, SHEHRZAD |
发明人 |
KUDUVALLI, GOPINATH;FU, DONGSHAN;QURESHI, SHEHRZAD |
分类号 |
A61N5/10;G01N23/04;G06T7/00;G06T7/20 |
主分类号 |
A61N5/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|