Abstract #3871
Using UTE images for bone/air segmentation: applications for radiation therapy
Weili Zheng 1 , Joshua P. Kim 1 , Indrin J. Chetty 1 , and Carri K. Glide-Hurst 1
1
Radiation Oncology, Henry Ford Health
System, Detroit, Michigan, United States
Accurate bone segmentation is essential for the
generation of (i) electron density maps needed for dose
calculation in MR-only radiotherapy treatment planning (RTP)
and (ii) MR-based attenuation correction maps in hybrid
PET/MRI systems. While UTE sequences improve the
visualization of tissues with short T2 such as cortical
bone (1), efficient and robust segmentation of bone and
air remains a significant challenge (2). To address this
need, we introduce an application that uses a novel
hybrid magnitude and phase UTE approach to differentiate
tissue types, facilitate accurate segmentation, and
generate synthetic CTs (synCTs) for the brain.
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