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Application of High Spectral and Spatial resolution (HiSS) MRI in prostate: a pilot study
Milica Medved1,2, Aritrick Chatterjee1,2, Ajit Devaraj3, Carla Harmath1, Grace Lee1, Ambereen Yousuf1,2, Tatjana Antic4, Aytekin Oto1,2, and Gregory S Karczmar1,2
1Radiology, The University of Chicago, Chicago, IL, United States, 2Sanford J. Grossman Center of Excellence in Prostate Imaging and Image Guided Therapy, The University of Chicago, Chicago, IL, United States, 3Philips Research NA, Cambridge, MA, United States, 4Pathology, The University of Chicago, Chicago, IL, United States
HiSS MRI is feasible for prostate cancer imaging at 3T, without an endorectal coil. HiSS parameters describing the water resonance shape are complementary to standard multi-parametric MRI and can likely be used to increase diagnostic accuracy.
Figure 2: The T2-weighted image, ADC map, shortest-TE HiSS MRI image, and HiSS MRI-derived temporal domain (R, R1, R2) and spectral domain (PW, PRD, PRA) parameter maps are shown here for a representative slice through the prostate of a 52-yo man with a Gleason score 7 (3+4) lesion (white outline).
Figure 3: Boxplots of HiSS MRI-derived parameters R, R1, R2, PW, PRD, and PRA are shown, for normal and cancer ROIs. The whiskers represent the full data range. All HiSS-derived parameters were statistically significantly different (p < 0.05) between cancer and normal tissue ROIs, except R2.