Non-contrast magnetic resonance imaging (MRI) is radiation-free and non-invasive and can almost replace radiography as the preoperative screening tool for diagnosing shoulder injuries, although its diagnostic value for various pathologies has to be appreciated separately from radiography. Nonetheless, a comprehensive clinical evaluation should always be the first step of any diagnostic workup.MRI is useful in detecting muscle and tendon injuries, soft-tissue pathologies, and major cartilage defects. Uncommon injuries can be readily diagnosed. For example, a rare case of seatbelt injury causing rupture of the deltoid muscle has been diagnosed by MRI.1 A ganglion cyst in the suprascapular fossa is uncommon and can cause a nerve palsy; noncontrast MRI helps diagnosing this pathology and planning of the surgical procedure.2 Bony pathology can be associated with other structures; MRI helps assess the anatomic association of acromioclavicular joint degeneration with supraspinatus outlet Non-contrast MRI has 89% sensitivity and 100% specificity in detecting rotator cuff tears; all missed tears were partial thickness tears. 4 In a study by Arnold in this issue, 5 the sensitivity and specificity of non-contrast MRI in diagnosing full thickness rotator cuff tears were 0.91 and 0.98, respectively, whereas the corresponding values for diagnosing labral tears were 0.48 and 0.99. Thus, non-contrast MRI was regarded as reliable only for full thickness rotator cuff tears and anterior labral tears. Classification of superior labrum anterior posterior tears or the diagnosis of a partial rotator cuff tears cannot be accurately established, except by contrast-enhanced MRI.Non-contrast MRI can be used as a screening tool for shoulder problems in conjunction with comprehensive clinical examination and radiography or ultrasonography. Contrast enhancement should be an option, if there is a suspicion of partial rotator cuff tear or labrum pathology.