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Original Article



DWI/ADC in Differentiation of Benign from Malignant Focal Liver Lesion

Elma Jahic, Amela Sofic, and Azra Husic Selimovic.




Abstract

Material and methods: The study was of prospective-retrospective character. It was carried out at the AKH in Vienna (Austria), where 100 patients with focal liver lesions were included in the study. All patients underwent the routine MR sequences on appliances 1,5 and 3T (Siemens, Germany): T1, T2, HASTE, VIBE, and a DWI with three b values (b 50, b 300 b 600 s / mm 2) and ADC map with ROI (regions of interest). The numerical value of ADC map was calculated, where n = 100 liver lesions, by two independent radiologists. Results: On the basis of matching the PH finding statistically we get DWI accuracy of 96.8% for the assessment of liver lesions. The average numerical value of ADC in benign hepatic lesions (FNH, Hemangiomas) in our study amounted to 1.88 (1.326 to 2.48) x103 mm 2 /s, while the value of malignant liver lesions (HCC, CCC, CRCLM) were significantly lower and amounted to 1.15 (1.024 to 1.343) x10-3 mm 2 /s (Figure 2). Differences between the mean ADC of benign and malignant lesions showed a statistically significant difference with p

Key words: diffusion weighted imaging, apparent diffusion coefficient, focal liver lesions.






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