Abstract #3825

Repeatability of DWI and DCE-MRI of Prostate in an Active Surveillance Population

Jack C. Williams¹, Matthew Gibbons¹, Janet E. Cowan², Peter R. Carroll², and Susan M. Noworolski¹

¹Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States, ²Urology, University of California San Francisco, San Francisco, CA, United States

This study attempted to fill the dearth of literature establishing the repeatability of DWI and DCE-MRI using a population of non-progressing men on active surveillance for prostate cancer. MRIs from men (n=26) with two DCE-MRI scans in one year were examined and mean ROI values on different imaging maps were analyzed for percent repeatability coefficient (%RC). %RC was lowest for ADC, DCE MRI peak enhancement, T2-weighted images and pharmacokinetically modeled v_e and K^trans.

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