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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 Bilgin2,3, 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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