Keywords: Pulse Sequence Design, Tumor, Stack-of-stars Acquisition
Motivation: Sequences from the T1RESS family offer increased lesion conspicuity in contrast-enhanced brain examinations. Recently, radial variants have been developed to improve motion robustness.
Goal(s): To enable broader clinical utilization of radial T1RESS sequences.
Approach: Dynamic imaging is enabled through combination with GRASP reconstruction. Fat/water separation is achieved by integrating the multi-echo Dixon technique. Further scan acceleration is achieved by applying 1D GRAPPA along the kz dimension.
Results: The proposed extensions are demonstrated for brain imaging at 3T in volunteers and patients, revealing dynamic lesion-enhancement patterns, successful fat/water separation, and supplementary scan acceleration with comparable quality and lesion conspicuity.
Impact: The proposed technical extensions of radial stack-of-stars T1RESS sequences, including dynamic reconstruction, fat/water separation, and parallel imaging, will enable broader clinical utilization of this novel sequence family and may result in noticeably improved sensitivity for lesion detection throughout the body.
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