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Abstract #2117

Accelerated Radial Turbo-Spin-Echo Sequence for Free-Breathing Abdominal T2 Mapping

Fei Han1 and Vibhas Deshpande2
1US MR R&D, Siemens Medical Solutions, USA, Los Angeles, CA, United States, 2US MR R&D, Siemens Medical Solutions, USA, Austin, TX, United States

This study proposes a comprehensive strategy to accelerate a Radial-TSE acquisition for qualitative T2-weighted imaging and quantitative T2 mapping for body applications. A fast k-space calibration method, a radial de-streaking method based on geometric coil mixing and accelerated acquisition using multiple gradient-echo radial readout between 180° refocusing pulses were implemented. Preliminary validation in phantom and in-vivo experiments shows that the proposed method reduces the scan time of Radial-TSE by half without noticeable loss of image quality and quantification accuracy. The proposed method may allow more efficient acquisition and improve the clinical applicability of free-breathing abdominal T2 quantitative imaging.

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