Abstract #0427

Free-Breathing Stack-of-Stars Look-Locker T1-mapping with Whole Liver Coverage

Ute Goerke¹, Shu-Fu Shih², Eze Ahanonu³, Holden H. Wu², Vibhas Deshpande⁴, Ali Bilgin³, Waqas Majeed⁵, and Maria I. Altbach⁶

¹Siemens Medical Solutions USA, Tucson, AZ, United States, ²Department of Radiological Sciences, University of California Los Angeles, Los Angeles, CA, United States, ³Department of Electrical Engineering, University of Arizona, Tucson, AZ, United States, ⁴Siemens Medical Solutions USA, Austin, TX, United States, ⁵Siemens Medical Solutions USA, San Francisco, CA, United States, ⁶Department of Medical Imaging, University of Arizona, Tucson, CA, United States

Synopsis

Keywords: Liver, Liver

Motivation: Many patients cannot hold their breath as required on standard protocols for abdominal imaging

Goal(s): We develop a new new free-breathing Look-Locker T1-mapping method with whole liver coverage.

Approach: The new free-breathing Look-Locker T1-mapping method employs a pilot tone signal for detecting the respiratory state. This signal is used to reconstruct motion-corrected T1-weighted images, which are used to calculate T1-maps.

Results: Robust T1-maps are obtained covering the whole liver obtained from 6 min free-breathing scan.

Impact: A new free-breathing Look-Locker T1-mapping method with whole liver coverage has been developed for patients who are not able to hold their breath as required in standard protocols.

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