Figure 3a:

Axial gradient-echo fat-suppressed T1-weighted images (a) before and (b–d) after the administration of gadolinium-based contrast material in the (b) corticomedullary, (c) nephrographic, and (d) excretory phases in a 62-year-old male patient demonstrate a heterogeneously enhanced mass in the upper pole of the right kidney (arrow). The %SI changes from the precontrast to the corticomedullary (455%), nephrographic (510%), and excretory (494%) phases (averaged for all readers) were observed. The final histologic finding was clear cell carcinoma.