Gopal Varma1, Peter Acher2,
Graeme Penney1, Kawal Rhode1, Stephen Keevil1,3,
Tobias Schaeffter1
1Imaging Sciences, King's College
London, London, United Kingdom; 2Department of Urology, Guy's and
St Thomas' NHS Foundation Trust, London, United Kingdom; 3Medical
Physics, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
Treatment
by prostate brachytherapy involves implant of radioactive seeds. Dosimetry
requires seed position and number to be accurately defined relative to
prostate anatomy. The advantage of soft tissue contrast from MRI allows
depiction of the prostate but localization of the seeds is relatively
poor. A SGM technique is used to
visualize the seeds by post-processing. The derived parameter is found to
have a linear correlation with number of seeds and thus provides potential
for dosimetry by MR.
Keywords