T1 mapping is a quantitative MR technique that can be used to measure the longitudinal relaxation time of tissues. Previous studies demonstrated that it is potentially able to differentiate benign and malignant tumors and identify histopathological grade. In this study, the dynamic contrast enhanced (DCE) T1 mapping exhibited the robust reproducibility and repeatability and thus may have potential be used for quantitative renal tumor evaluation in cross-sectional and longitudinal studies. Furthermore, we found that clear cell renal cell carcinoma (ccRCC) had higher native and enhanced T1values than non-ccRCC. Thus, DCE T1 mapping is promising in differentiating ccRCC from non-ccRCC.
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