Table 1. Correlations of rheumatoid nodule PD vascularization versus indexes of disease activity

Correlation	DAS28	Rapid3	German US7 gray scale synovitis	German US7 PD synovitis
Presence of rheumatoid nodule PD signal	U=69.0	U=54.0	U=71.5	U=67.50
	p=0.70	p=0.28	p=0.78	p=0.65
Intensity of rheumatoid nodule PD signal	Rho = 0.37	Rho=0.48	Rho = –0.02	Rho= –0.09
	p=0.025	p=0.003	p=0.78	p=0.62