We present an anthropomorphic pelvic phantom for MR-guided radiotherapy. Materials were selected to mimic bone, fat and muscle and produce tissue-like contrast with T1, T2 and T2* weighted MRI sequences and CT. MR and CT tissue quantification results are presented. A comparison between the phantom and patient images acquired using standard prostate radiotherapy MR sequences is presented. The study concludes with an example application of the phantom where we compare the visibility of an implanted gold fiducial marker in phantom and in vivo.
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