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Abstract #0925

Iterative T2 Estimation from Highly Undersampled Radial Fast Spin-Echo Data

Graff C, Li Z, Gmitro A, Altbach M, Bilgin A, Clarkson E
University of Arizona

T2-weighted imaging is a valuable method for the diagnosis of many pathological disorders, though T2 measurements are lengthy and impractical for routine clinical use. Recently a radial fast-spin echo method was developed which greatly reduces acquisition time. Data acquired in this way is very undersampled in spatial high frequencies, which results in errors in the T2 estimation of small objects. We present an iterative reconstruction technique based on projection onto convex sets (POCS), which can extract accurate T2 estimates from this undersampled data set.