High-resolution MRI of flexor tendon pulleys using a 16-channel hand coil: disease detection and differentiation of psoriatic and rheumatoid arthritis

Table 5 Spearman rho correlation coefficient (ρ) for the score of inflammatory changes of flexor tendon pulleys (A1 and A2) and PsAMRIS sub-scores, total PsAMRIS, and flexor tendon pulley thickness at D2–5 in PsA and RA patients

	D2		D3		D4		D5
	PsA	RA	PsA	RA	PsA	RA	PsA	RA
Synovitis	0.72	0.49	0.48	0.36	0.4	0.2	0.83	0.11
Flexor tenosynovitis	0.7	0.49	0.91	0.46	0.7	0.48	0.76	0.41
Periarticular inflammation	0.49	0.49	0.62	0.32	0.77	0.49	0.6	0.53
Bone erosion	0.37	0.16	0.43	0.31	0.13	na	0.62	0.28
Bone edema	0.52	− 0.34	0.66	0.39	0.36	na	0.28	na
Bone proliferation	− 0.03	na	− 0.05	na	− 0.44	na	0.05	na
Overall PsAMRIS	0.72	0.46	0.81	0.47	0.45	0.63	0.80	0.46
Pulley thickness	0.23		0.11		0.22		0.07

na = non applicable
After (adapted) Bonferroni correction, p values < 0.0167 were considered significant and are printed in bold type

ISSN: 1478-6362