Yvan Boulanger1, Martin Ruel1, Abdesslem Khiat1, Luigi Lepanto1, Miguel Chagnon2, Claude Kauffman1, An Tang1, Louis Gaboury3, Gaspard d'Assignies1
1Radiologie, CHUM, Montral, Qubec, Canada; 2Mathmatiques et statistique, Universit de Montral, Montral, Qubec, Canada; 3Anatomo-pathologie, CHUM, Montral, Qubec, Canada
In order to determine the most reliable noninvasive technique or combination of techniques to detect and quantitate liver steatosis, correlations were assessed with fat fractions (FF) measured by a semi-automatic segmentation of liver histopathology slices for results of dual-echo imaging (DEI), MRS, diffusion-weighted imaging (DWI) and several bioassays in 20 liver steatosis patients. Strong correlations were obtained for DEI, MRS and three bioassays but not for DWI data. Partial correlations combining two methods failed to improve the correlations with results from a single method. DEI and MRS therefore appear as the best methods to noninvasively quantify liver steatosis.