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Abstract #1111

1.0T MR-based Treatment Planning for Spinal Stereotactic Radiosurgery Initial Case Study

Ning Wen 1 , Joshua Kim 1 , Carri Glide-Hurst 1 , Bo Zhao 1 , Yimei Huang 1 , David Hearshen 2 , Milan Pantelic 2 , M.Salim Siddiqui 1 , Kenneth Levin 1 , Benjamin Movsas 1 , Indrin Chetty 1 , and Samuel Ryu 1

1 Radiation Oncology, Henry Ford Health System, Detroit, Michigan, United States, 2 Radiology, Henry Ford Health System, Detroit, Michigan, United States

This study is to investigate the feasibility of developing a stereotactic radiosurgery treatment protocol for spinal metastatic lesions based solely on a dedicated 1.0 T magnetic resonance simulation platform. The dose was calculated on a synthetic CT image set generated from a weighted combination of T1-weighted and T2-weighted images for one patient. The dose calculation difference between CT and synthetic CT was within 3%. However, the bony segmentation, metal artifacts and geometric distortion correction need to be further investigated to use MRI as the primary imaging modality for spinal radiosurgery.

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