Magnetic resonance imaging (MRI) and computed tomography (CT) produce better detection of bone erosion in rheumatoid arthritis (RA) than radiography, according to research published in Arthritis Research & Therapy. The early detection of bone erosion is very important in the treatment of patients with rheumatoid arthritis. Dr Møller Døhn of the Copenhagen University Hospital said, “The number of erosions detected on CT indicate that CT is a very sensitive method for detecting bone erosions in RA wrist bones, possibly even more sensitive than MRI.”