Dr. Johannes Roth has been a pediatric rheumatologist at the Children’s Hospital of Eastern Ontario (CHEO) since 2007. He is a Professor of Pediatrics at the University of Ottawa and the Chief of the Division of Rheumatology at CHEO. He is a very active member on various committees and professional societies nationally and internationally with a focus on musculoskeletal ultrasound. Dr. Roth is a co-founder and former President of the Canadian Rheumatology Ultrasound Society. He is leading several national and international projects on the standardization and validation of pediatric musculoskeletal ultrasound. This includes his role as chair of the CARRA pediatric ultrasound group and pediatric representative on the board of the PANLAR ultrasound group. He served on the ACR RhMSUS certification program. He was on the  Ultrasound School of North American Rheumatologists (USSONAR) board, a non-profit program that trains rheumatologists and rheumatology fellows in MSUS. He serves as director and faculty on several national and international MSK-US courses as well as arranging cadaveric based interventional MSK-US courses for the Canadian Rheumatology Ultrasound Society.  He is the chair of the steering committee of Ped-MUS, the pediatric rheumatology initiative on musculoskeletal ultrasound, a global initiative on the implementation of ultrasonography into clinical practice.