Table 1

Group characteristics

Group*Diagnosis†Patient number (No of images)Age (years) Mean (range)Disease duration (years) Mean (range)Vasoactive drugs‡
*HA, healthy adults; HC, healthy children; JIA, juvenile idiopathic arthritis; SLE, systemic lupus erythematosus; CTD, connective tissue disease; RS, Raynaud’s syndrome; VAS, primary vasculitis.
†Oligo, oligoarthritis; poly, polyarthritis; syst, systemic arthritis; PsA, psoriatic arthritis; JDMS, juvenile dermatomyositis; SSc, systemic sclerosis; MCTD, mixed connective tissue disease; other, overlap syndromes; HSP, Henoch- Schönlein purpura; urtic, urticarial hypocomplementaemic vasculitis.
‡The only vasoactive drug used at the time of the study was nifedipine in four cases.
HAHealthy20 (35)35 (21–58)0
HCHealthy17 (60) 7 (2–18)0
JIAOligo 6, poly 5, syst 2, PsA 215 (55)9.8 (6–16)3 (3 m–5 y)0
SLESLE8 (26)13.1 (9–17)3.6 (5 m–8 y)0
CTDJDMS 8, SSc 3, MCTD 4, other 318 (80)13.3 (5–17)5.1 (9 m–11 y)2 (MCTD, overlap)
RSPrimary RS9 (36)9.8 (3–14)4.1 (2–7 y)2
VASHSP 2, urtic 13 (8)10 (6–14)1.9 (3 m–5 y)0