Abstract #4975

A Technique for Rapid Single-Echo Spin Echo T2 Mapping

Marshall S. Sussman¹, Logi Vidarsson², John M. Pauly³, Hai-Ling Margaret Cheng^4,5

¹Medical Imaging, University Health Network, Toronto, Ontario, Canada; ²Diagnostic Imaging, The Hospital for Sick Children, Toronto, Ontario, Canada; ³Electrical Engineering, Stanford University, Stanford, CA, United States; ⁴Research Institute & Diagnostic Imaging, The Hospital for Sick Children, Toronto, Ontario, Canada; ⁵Medical Biophysics, University of Toronto, Toronto, Ontario, Canada

Rapid T2 mapping is conventionally performed using multi-echo spin-echo imaging. However, due to errors arising from stimulated echoes and limited availability, the traditional but much slower single-echo spin-echo approach is often preferred. In this work, a rapid and accurate T2 mapping method based on single-echo spin-echo imaging is presented. Acquisition times are significantly reduced by employing a short repetition time (TR) together with a constant TR-TE difference to maintain monoexponential decay. Accuracy of the proposed method is demonstrated in phantom results and in-vivo imaging of the healthy human knee cartilage and brain.