Arthur M. Mandelin MD/PhD, RMSK, RhMSUS discusses ultra-sound-guided synovial biopsy. He examines the RhEumatoid Arthritis SynOvial tissue Network (REASON), it’s objective and why it was formed. He shares how Northwestern Medicine is utilizing ultrasound-guided synovial tissue biopsies for RA research and how he envisions this research translating into patient care.