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Abstract #5136

Reproducibility of calf-muscle perfusion measurements from dynamic contrast-enhanced MRI

Christopher C Conlin1, Jiawei Dong1, Stephen Decker2, Nan Hu3, Mariya A Chadovich1, Michelle T Mueller4, Lillian L Khor5, Christopher J Hanrahan1, Gwenael Layec2, Vivian S Lee1, and Jeff L Zhang1

1Department of Radiology and Imaging Sciences, University of Utah School of Medicine, Salt Lake City, UT, United States, 2Division of Geriatrics, University of Utah School of Medicine, Salt Lake City, UT, United States, 3Division of Biostatistics, University of Utah School of Medicine, Salt Lake City, UT, United States, 4Division of Vascular Surgery, University of Utah School of Medicine, Salt Lake City, UT, United States, 5Division of Cardiovascular Medicine, University of Utah School of Medicine, Salt Lake City, UT, United States

This study examined the reproducibility of calf-muscle perfusion measurements from DCE-MRI following plantar-flexion exercise, which is a promising technique for assessing calf-muscle function and viability. In a group of healthy subjects, the same post-exercise DCE-MRI protocol was repeated on two different days and calf-muscle perfusion measurements were compared between the two visits. High correlation and agreement of perfusion between visits was observed for the posterior calf muscles, demonstrating that a plantar-flexion exercise protocol followed by DCE-MRI is suitable for achieving precise measurements of calf-muscle perfusion.

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