Correlation of magnetic resonance signal characteristics and perfusion parameters assessed by volume perfusion computed tomography in hepatocellular carcinoma: Impact on lesion characterization

Table 4 Comparison of lesions with a typical magnetic resonance signal pattern (T2 hyperintense, T1 hypointense, wash-in and wash-out kinetic) vs lesions which did not fulfill at least one of the mentioned magnetic resonance criteria

MR-pattern	BF (mL/100 g tissue/min)	BV (mL/100 mL)	k-trans (mL/min per minute)	ALP (mL/100 g tissue/min)	PVP (mL/100 g tissue)	HPI (%)
Typical lesions (n = 26)	63.3 ± 22.3	15.4 ± 9.8	36.4 ± 12.7	48.9 ± 16.3	2.0 ± 2.7	95.0 ± 6.6
Atypical lesions (n = 10)	58.1 ± 28.1	15.2 ± 7.4	34.4 ± 20.0	52.5 ± 24.6	2.5 ± 2.3	93.7 ± 6.3
t test	P = 0.62	P = 0.94	P = 0.84	P = 0.68	P = 0.58	P = 0.61

BF: Blood flow; BV: Blood volume; ALP: Arterial liver perfusion; PVP: Portal venous perfusion; HPI: Hepatic perfusion index.