Table 4.

Spearman correlation coefficients (r) for variables with p values

Parameters	Spearman correlation analysis
p value	Rho (r)
Age - elasticity and velocity	0.001	0.31
Age - VI	0.001	0.45
Age - volume	0.001	0.27
Shortest diameter - elasticity	0.001	0.40
Shortest diameter - VI	0.001	0.69
Longest diameter - VI	0.001	0.38
Longest diameter - elasticity	0.07	0.1
SI - elasticity	0.001	0.39
SI - VI	0.001	0.53
Volume - elasticity and velocity	0.001	0.29
Volume - VI	0.001	0.6
Elasticity - VI	0.001	0.5
Peripheral vascularity - shortest diameter	0.001	0.64
Peripheral vascularity - elasticity	0.001	0.5
Peripheral vascularity - VI	0.001	0.67

SI, shape index; VI, vascularity index.