![]() A complete optimizer workflow is proposed which includes the determination of (1) the position of the center of rotation, (2) the needle angulations and (3) the dwell times. The aim of this work is to develop an automatic inverse dose planning optimization tool for focal HDR prostate brachytherapy with needle insertions in a divergent configuration. Currently, there is no treatment planning system commercially available which allows optimization of the dose distribution with such needle arrangement. This rotation point is just beneath the perineal skin to have access to the focal prostate tumor lesion. To overcome this problem, a MR-compatible, single- divergent needle-implant robotic device is under development at the University Medical Centre, Utrecht: placed between the legs of the patient inside the MR bore, this robot will tap the needle in a divergent pattern from a single rotation point into the tissue. ![]() However, MR-guided needle placement is currently not possible due to space restrictions in the closed MR bore. For focal treatment, optimal needle guidance and placement is warranted. A.įocal high-dose-rate (HDR) for prostate cancer has gained increasing interest as an alternative to whole gland therapy as it may contribute to the reduction of treatment related toxicity. ![]() An automated optimization tool for high-dose-rate (HDR) prostate brachytherapy with divergent needle patternīorot de Battisti, M.
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