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Abstract #1423

Consistency of Signal Intensity and R2* in Frozen Porcine Kidney and Liver

Josan S, Butts Pauly K, Kaye E
Stanford University

MR-guided cryoablation is a promising method for the minimally invasive therapy of prostate, liver, and kidney tumors. It is known that the relaxation rate R2* increases in frozen tissue, it is not known how consistent these MR parameters are between tissue types. We report Signal Intensity and R2* values for freshly excised ex vivo frozen tissue of two different types, porcine kidney and liver. Our results showed that the slope of the line fit of R2*(T) and decay of SI in frozen tissue did not depend on tissue type, however the intersect values varied considerably between liver and kidney.