Patient positioning error measurement based on dynamic template matching techniques.
The decrease of accuracy in patients' repeated positioning in radiotherapy due to body's transformation is considered and a positioning error measurement method using dynamic template matching technique is brought forward in this paper. This method is an improvement of the matching method to correct positioning error based on the CT digitally reconstructed radiograph(DRR), which uses the video reconstructed 3D surface model that can reflect the body's transformation as the matching template instead of DRR. This method can not only improve the positioning accuracy but also eliminate the adverse influence brought by body's transformation.
Sheng-Xiang
Tao
T
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei of Anhui Pro.230031, China. (e-mail: info am@vip.163.com).
Yi-Can
Wu
W
Jiang-Hui
Zhang
Z
Ai-Dong
Wu
W