Assessment of humeral head perfusion after proximal humeral fracture - study protocol for evaluation of MR-based imaging techniques. - Garkisch, Angelina; Fischer, Dagmar-C.; Mittlmeier, Thomas; Märdian, Sven; Klaan, Bastian; Weber, Marc-André; Erbersdobler, Andreas; Pauly, Stephan; Gahr, Patrick (Journal of Orthopaedic Surgery & Research, 2025)