Table 2.

Correlation between perfusion histogram parameters and PTEN expression in three types of lung cancer

Group	Kinetic parameter	Histogram metrics	ρ value	P value
SCC	Vp	Uniformity	0.836	< 0.001
AC	Ktrans	Uniformity	0.633	0.027
	Ve	Kurtosis	0.721	0.008
		Q10	0.590	0.044
		Q25	0.611	0.035
SCLC	Fp	Skewness	0.941	0.005
		Kurtosis	0.941	0.005
		Energy	0.941	0.005
		Entropy	− 0.941	0.005
	Ve	Q75	0.820	0.046
		Q90	0.941	0.005
		Q95	0.820	0.046