echocardiography: calculated systolic peak flow gradient of descending thoracic aorta at rest
echocardiography: calculated systolic peak flow gradient of descending thoracic aorta at rest
echocardiography: calculated systolic peak flow gradient of descending thoracic aorta at rest (procedure)
echocardiography: calculated systolic peak flow gradient of descending thoracic aorta at rest (procedure)