Automatic detection of head refixation errors in fractionated stereotactic radiotherapy (FSR)

S. Li, J. Geng, D. Liu, D. Rigamonti, L. Kleinberg, S. He, T. DeWeese

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Patient surface images are acquired using a novel 3D camera when the patient is at the CT-simulation position and after setup for fractionated stereotactic treatment. The simulation and treatment images are aligned through an initial registration using several feature points followed by a refined automatic matching process using an iterative-closest-point mapping-align algorithm. All of the video-surface images could be automatically transformed to the machine coordinate according to the calibration file obtained from a template image. Phantom tests have demonstrated that we can capture surface images of patients in a second with spatial resolution of sub-millimeter. A millimeter shift and one-degree rotation relative to the treatment machine can be accurately detected. The entire process takes about two minutes. Our primary result on patients involved in a clinical trial is very promising. This research is partially supported by INH Grant 1R43CA91690-01 and NIH CA88843.

Original languageEnglish (US)
Title of host publication2004 2nd IEEE International Symposium on Biomedical Imaging
Subtitle of host publicationMacro to Nano
Pages284-287
Number of pages4
StatePublished - Dec 1 2004
Event2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano - Arlington, VA, United States
Duration: Apr 15 2004Apr 18 2004

Publication series

Name2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano
Volume1

Other

Other2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano
CountryUnited States
CityArlington, VA
Period4/15/044/18/04

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Li, S., Geng, J., Liu, D., Rigamonti, D., Kleinberg, L., He, S., & DeWeese, T. (2004). Automatic detection of head refixation errors in fractionated stereotactic radiotherapy (FSR). In 2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano (pp. 284-287). (2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano; Vol. 1).