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Abstract #0312

Quantitative MRS of Ovaries & Ovarian Masses at 3T: Methodology & Initial Findings

Patrick J. Bolan1, Jori S. Carter2, Navneeth Lakkadi1, Levi S. Downs Jr. 2

1Radiology/CMRR, University of Minnesota, Minneapolis, MN, USA; 2Obstetrics, Gynecology & Womens Health, University of Minnesota, Minneapolis, MN, USA

This work describes the development of a methodology for performing quantitative 1H MRS in ovarian masses and normal ovaries at 3T and reports the initial findings in 68 spectra. MRS performance varied depending on the structure measured: healthy ovaries had low SNR due to small size, cystic regions had low metabolic content, and solid regions regularly showed a total choline (tCho) resonance and occasionally other metabolites including creatine, glycine, and an unidentified 2.05ppm resonance. The new quantification method, which uses T2-corrected water as an internal reference, found tCho ranging from 0.2-3.4 mmol/kg in solid regions.