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
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