heumatoid arthritis—RA is one of the most common idiopathic inflammatory arthropathies, and it has been a significant focus of rheumatology practice and research for decades. Several clinical and laboratory parameters have been used for the assessment of disease activity, including clinical tools, such as the Clinical Disease Activity Index, the Visual Analog Scale for Pain, the Disease Activity Score 28, the physician and patient global assessments, Steinbrocker functional staging, and the Health Assessment Questionnaire Disability Index, and laboratory values, such as erythrocyte sedimentation rate and C-reactive protein (CRP) level. As more objective measures have been sought, radiologic measures, including conventional radiology and MRI of the hand and foot joints, as well as ultrasound measures (e.g., cumulative synovial thickness), have also been used [61].Read More: https://www.ajronline.org/doi/full/10.2214/AJR.17.18523