Abstract

On baseline scans mean C-values were: metastasis: 2.8 ( 5.5) dB, HHC: 3.2 ( 4.0) dB, haemangioma: 3.9 ( 5.1) dB, FNH 0.9 ( 4.8) dB, FF: 1.0 ( 7.6) dB, all malignant lesions: 2.9 ( 5.1) dB, all benign lesions: 1.6 ( 6.1) dB. On contrast enhanced PIUS mean C-values were: metastasis: 17.9 ( 7.3) dB, HHC: 14.5 ( 9.4) dB, haemangioma: 1.4 ( 5.6) dB, FNH 4.4 ( 5.15) dB, FF: 0.4 ( 2.1) dB, all malignant lesions: 17.0 ( 7.9) dB, all benign lesions: 1.8 ( 5.1) dB. The differences between benign and malignant lesions were significant both pre and post contrast (p 0.02 and p 0.0001). However on baseline there was a big overlap between the 2 groups and no discrimination was possible. Conversely, post Levovist all malignant lesions showed a C 5 dB while all but two benign lesions (one haemangioma and one FF) had a C 5dB.

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