Abstract #4508

Measurement of Spin-Spin Relaxation of Myocardial Lipids and Water at 3T by Optimized Clinical 1H MRS Protocol.

Martin Krssk¹,², Veronika Rackayova³, Gert Reiter⁴, Marek Chmelik⁵, Yvonne Winnhofer¹, Siegfried Trattnig⁵, Anton Luger¹, Michael Krebs¹

¹Division of Endocrinology and Metabolism, Department of Intrenal Medicine III, Medical University of Vienna, Wien, Austria; ²Centre of Excellence High Field MR, Department of Radiology, Medical University of V ienna, Wien, Azerbaijan; ³Comenius University, Bratislava, Slovakia; ⁴Siemens Healthcare, Graz, Austria; ⁵Centre of Excellence High Field MR, Department of Radiology, Medical University of Vienna, Wien, Austria

Optimized 1H MRS protocol allowed for the measurement of spin spin relaxation times of lipid and water resonance lines in the myocardium of healthy volunteers (n=6). Using the PRESS sequence sufficient SNR has been achieved to quantify the water and methylene resonances in the range of echo times from 30 to 100 ms. Estimated T2 time for water (36.83.4 ms) is in agreement with previous MRI based results and T2 methylene lipid group (52.26.8 ms) is somewhat shorter than those measured in skeletal muscle at 3T.