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Abstract #2862

MR-only Radiation Therapy Planning workflow optimization for Head and Neck: Zero TE based pseudo CT conversion with body coil.

Cristina Cozzini1, Sandeep Kaushik 2, and Florian Wiesinger1

1GE Healthcare, Munich, Germany, 2GE Global Research, Bangalore, India

Proton Density (PD) weighted Zero Echo Time (ZTE) imaging has been recently developed to provide bone, soft-tissue and air classification suitable for PET/MR Attenuation Correction and Radiation Therapy Planning (RTP). Here we demonstrate ZTE based derivation of pseudo CT using an optimized body coil protocol, which enables patient positioning in the MRI with the RT fixation devices, while preserving the image quality and reproducibility needed for pseudo CT conversion. The method was tested for the head and neck application on N=5 volunteers for different resolutions. The results were compared versus a high SNR surface coil, previously demonstrated suitable for pseudo CT conversion and dose calculation.

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