Title :
Patient Positioning Error Measurement Based On Dynamic Template Matching Techniques
Author :
Tao Sheng-xiang ; Wu Yi-can ; Zhang Jiang-hu ; Wu Ai-dong
Author_Institution :
Inst. of Plasma Phys., Chinese Acad. of Sci., Hefei
Abstract :
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
Keywords :
biomedical optical imaging; image matching; image reconstruction; medical image processing; radiation therapy; video signal processing; CT digitally reconstructed radiograph; body transformation; dynamic template matching techniques; patient positioning error measurement; radiotherapy; video reconstructed 3D surface model; Biology computing; Cameras; Computed tomography; Image reconstruction; Medical treatment; Neoplasms; Plasma measurements; Position measurement; Rotation measurement; Surface reconstruction; 3D surface model; body´s transformation; dynamic template; matching method; repeated positioning in radiotherapy;
Conference_Titel :
Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the
Conference_Location :
Shanghai
Print_ISBN :
0-7803-8741-4
DOI :
10.1109/IEMBS.2005.1617135
