“…These two imaging procedures are definitely better than plain CT or MRI of the shoulder because of the contrast resolution due to the presence of intra-articular diluted paramagnetic contrast or iodinated agent, respectively, and to the distension of the of the joint capsule [1][2][3][4][5][6]. The evaluation of site, type, grade, and extent of the disease is more reliable, in particular for rotator cuff tears [2,7,8] and congenital or traumatic glenohumeral instability [9][10][11]. The two techniques give different information due to a higher CT sensitivity for calcifications and bone injuries [11,12] and an optimal MR contrast resolution for soft tissue abnormalities [2,3,7,11,13].…”