Table 2

Dynamic contrast-enhanced TIC shapes in IgM-RF-positive and/or anti-ACPA-positive individuals without arthritis and healthy controls

IgM-RF- and/or ACPA-positive individualsHealthy controlsp Value
Type 2 TIC (%)75.0 (52.0–90.0)74.0 (61.0–89.0)0.79
Type 3 TIC (%)2.3 (1.2–11.9)3.1 (1.3–4.7)0.79
Type 4 TIC (%)5.4 (1.9–20.2)8.1 (2.6–8.9)0.43
Type 5 TIC (%)8.1 (3.5–14.0)7.4 (4.5–15.4)0.73
Volume synovium (ml)23 (13–57)20 (4–40)0.38
Maximal enhancement0.7 (0.5–1.1)0.6 (0.5–0.8)0.22
Rate of enhancement11.6 (7.7–21.5)10.6 (9.2–13.1)0.51
  • All values are expressed as median (min–max). Mann–Whitney U test was used to compare both groups. p Value <0.05 was considered significant.

  • ACPA, anticitrullinated peptide antibody; IgM-RF, IgM rheumatoid factor; TIC, time intensity curve.