Impact of the Persistence of Inflammation at Doppler Ultrasound Level on the Structural Evolution of Erosion in Rheumatoid Arthritis Treated With Biotherapy

"The Xtrem CT scanco device is a HR-pQCT. It was initially used to measure bone density and quantify the bone architecture to 3D at the extremities of the human body.~For the study, the device will be used to measure changes in erosion at the 2nd or 3rd metacarpal head. Only the patient's hand will be in contact with the medical device, the acquisition time will be 3 minutes."