Table 2.

Significant correlations between histological/sonographic parameters of synovitis and 2 biological parameters of activity.

Parameters Tested	Log ESR		Log CRP
Parameters Tested	r	p	r	p
Histological vessel density	0.77	0.0054	0.69	0.0177
% of k > 0.01 in the ROI	0.87	0.0004	0.83	0.0015
k_max	0.67	0.0226	0.62	0.0418

ROI: region of interest; ESR: erythrocyte sedimentation rate; CRP: C-reactive protein.