Abstract #0369

Flexible and Efficient 2D Radial TSE T2 Mapping with Tiered Echo Sharing and with “Pseudo” Golden Angle Ratio Reordering

Yutaka Natsuaki¹, Mahesh Bharath Keerthisavan², Ali Bilgin^2,3, Bradley D Bolster⁴, Kevin J Johnson⁵, Xiaoming Bi¹, Gerhard Laub⁶, and Maria I Altbach⁷

¹Siemens Healthcare, Los Angeles, CA, United States, ²Electrical and Computer Engineering, University of Arizona, Tucson, AZ, United States, ³Biomedical Engineering, University of Arizona, Tucson, AZ, United States, ⁴Siemens Healthcare, Salt Lake City, UT, United States, ⁵Siemens Healthcare, Tucson, AZ, United States, ⁶Siemens Helathcare, San Francisco, CA, ⁷Medical Imaging, University of Arizona, Tucson, AZ, United States

There has been recent increased interest in quantitative T₂ mapping for accurate diagnosis of many pathological disorders. 2D radial TSE with tiered echo sharing and bit-reverse view ordering acquires TE data for T₂ mapping in an efficient and motion robust fashion, but imposes limits on the choice of Echo Train Length (ETL). The current work introduces a novel view ordering algorithm with “pseudo” Golden Angle ratio (pGA) that removes restrictions in the ETL. With this algorithm, the scan time of 2D radial TSE is reduced (by18% in this study) without a compromise in image quality or in T₂ mapping accuracy.

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