The diagnostic value of dual-flip angle (DFA) T1 mapping and DWI imaging in the diagnosis of benign and malignant focal liver lesions (FLLs) were compared.T1 mapping includes Native T1,Enhanced T1 in the equilibrium period of 2 minutes after Gd-DTPA enhancement,and T1 enhancement rate ΔT1%.In T1 mapping, the enhanced T1 value and ΔT1% have diagnostic sensitivity and specificity similar with DWI.The Native T1 value is superior to DWI in the differential diagnosis of liver cysts and hemangioma.T1 mapping has a promising future as a non invasive alternative method for biopsy identification of benign and malignant FLLs.
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