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Abstract #0432

Fast inline reconstruction of T2 maps from dual echo spin echo images

Jeff Snyder1, Peter Seres1, Robert W Stobbe1, Justin G Grenier1, Penelope Smyth2, Gregg Blevins2, and Alan H Wilman1
1Biomedical Engineering, University of Alberta, Edmonton, AB, Canada, 2Department of Medicine, Division of Neurology, University of Alberta, Edmonton, AB, Canada

Synopsis

A fast reconstruction method for PD-T2w T2 maps is presented and compared to the previous L2 norm minimization technique using Bland-Altman analysis in a five patient multiple sclerosis data set acquired at 3 T. The new (subtraction) technique was in excellent agreement with the L2 norm method (confidence intervals of -1.1 to +1.2 ms), with average single slice reconstruction times of 0.6 s compared to 134 s. The speed of T2 map production allowed accurate (based on sequence simulation via Bloch equations) inline T2 maps directly on the MRI console.

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Keywords