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Abstract #3809

A Magnetic Resonance Imaging (MRI) and Computed Tomography (CT) compatible anthropomorphic pelvic phantom for MRI-guided radiotherapy.

Kamal Singhrao1, Yingli Yang1, Thomas Wong1, Geraldine Chee1, Jie Fu1, Daniel Low1, and John H Lewis1

1Radiation Oncology, University of California Los Angeles, Los Angeles, CA, United States

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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