Abstract #4151
Localization of an HDR brachytherapy source using MR artifact simulation and phase-only cross correlation
Ellis Beld 1,2 , Marinus A. Moerland 1 , Job G. Bouwman 2 , Frank Zijlstra 2 , Jan J.W. Lagendijk 1 , Max A. Viergever 2 , and Peter R. Seevinck 2
1
Department of Radiotherapy, University
Medical Center Utrecht, Utrecht, Utrecht, Netherlands,
2
Image
Sciences Institute, University Medical Center Utrecht,
Utrecht, Utrecht, Netherlands
Image guidance is of great importance in high-dose-rate
(HDR) prostate brachytherapy. A robotic MR-guided HDR
brachytherapy treatment is being developed and one of
the aims is real-time tracking of the HDR source. In
this study, localization of an HDR brachytherapy source
was performed retrospectively, by simulating the
artifact of the source in a gradient echo image and
matching the simulated artifact to the experimental
image by means of phase-only cross correlation.
Furthermore, it was investigated to what extent the
localization depends on the materials of the
interventional devices.
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