Perfusion computed tomography in renal cell carcinoma

Table 4 Response evaluation using changes in computed tomography perfusion parameters in two representative cases

	Date of study		MIP (HU)	TTP (s)	BF (mL/100 mL per minute)	BV (mL/100 mL)	MTT (s)	PMB (mL/100 mL per minute)
Case 1	2013-4-2	Normal cortex	120	11.1	202.9	31.6	8.7	47.1
		Renal tumour	134	13.5	184.9	30.8	10.4	45.95
	2013-9-11	Normal cortex	121	13.2	209	30.2	9.2	50.2
		Renal tumour	79	11.5	174	13.2	5	18.1
	2013-11-20	Normal cortex	130	10.8	229	32	9.6	45.3
		Renal tumour	42	12.3	5.7	1.2	12.4	8.2
Case 2	2013-10-23	Normal cortex	157	11.9	236	27.8	8.9	43.7
		Renal tumour	88	12.3	64.4	9.3	8.9	18.7
	2013-12-26	Normal cortex	140	15.2	170.9	29.5	10.5	42.1
		Renal tumour	82.7	14.8	60.9	7.9	8.4	13.8
	2013-8-3	Normal cortex	216	12.5	315	38	72	55.2
		Renal tumour	84.6	12.3	72.3	8	7.4	10.8

BF: Blood flow; BV: Blood volume; MTT: Mean transit time; PMB: Permeability; MIP: Maximum peak intensity; TTP: Time to peak.