Objective: The objective was to compare the performance of dynamic contrast-enhanced (DCE) and diffusion-weighted (DW) magnetic resonance (MR) imaging in the differentiation of subtypes of renal cell carcinoma (RCC).
Materials/methods: This study included 45 renal tumors of clear cell (n=36) and non-clear-cell (n=9) RCC. The contrast enhancement ratios (CERs) and the apparent diffusion coefficient (ADC) values on MR imaging were compared between the clear cell and non-clear-cell RCC groups.
Results: In the comparison of diagnostic performance between DCE and DW MR imaging, areas under the curves were 0.968 and 0.797 for the CERs of the corticomedullary and the ADC value.
Conclusion: The CER of the corticomedullary phase was more reliable in distinguishing between clear cell and non-clear-cell RCCs.
Keywords: Contrast-enhanced imaging; Diffusion-weighted imaging; Renal cell carcinoma; Subtype.
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