Correction to: Differing X-ray patterns in seronegative and seropositive rheumatoid arthritis.

The first and family names of the authors were interchanged and are now presented correctly. The original article has been corrected.

Differing X-ray patterns in seronegative and seropositive rheumatoid arthritis.

Introduction: Anti-citrullinated protein antibody (ACPA) and rheumatoid factor (RF) status are important predictors for rheumatoid arthritis (RA) erosivity. Qualitative differences on hand/feet radiographs have been described, indicating more carpal fusion in seronegative RA. This study explores these differences further using the total Sharp/van der Heijde score (TSS), digital X-ray radiogrammetry (DXR), and qualitative description.

Steady state vascular imaging with extracellular gadobutrol: evaluation of the additional diagnostic benefit in patients who have undergone a peripheral magnetic resonance angiography protocol.

Background: To evaluate the feasibility and additional diagnostic benefit of a high-resolution steady state 3D-volume interpolated breath-hold exam (VIBE) sequence between a continuous table movement (CTM) MR angiography of the entire runoff vasculature and a time-resolved (TWIST) MRA of the calves.

Methods: In this retrospective IRB approved study 224 patients (72 women, 152 men, mean age 67.29 ± 13.