Whereas, the studies on the perfusion of subtypes of RCC demonstrated that perfusion of CRCC and CCRCC quantified by f value (IVIM) and renal blood flow (mL/min/100 g) (Arterial Spin Labeling, ASL) were significantly higher than those of PRCC, with no difference between those of CRCC and CCRCC [32, 33]. Here, PRCC is linked to renal cell carcinoma.