Dual-Energy/Multi-Energy/Spectral-CT can visualize bone marrow edema associated with fractures, however, current scientific evidence is mostly derived from to retrospective analyses. Our prospective study systematically analyzes the diagnostic accuracy of the visualization of bone marrow edema by including patients who are scheduled for a CT scan to exclude or further characterize a fracture. After giving informed consent, the CT scan will be performed using a dose-neutral Dual-Energy-/Multi-Energy-/Spectral-CT acquisition technique. If the patient undergoes MRI of the same region within 7 days, this scan will be used as a gold-standard for bone marrow edema. This will allow the quantification of diagnostic accuracy.

Inclusion Criteria:

• clinical suspicion for a fracture AND
• indication for CT confirmed by board-certified radiologist ('justified indication' according to German/European radiation protection law) AND
• patient (is able to give informed consent and) has given informed consent.

Exclusion Criteria:

• cardiorespiratory instability (as judged by the referring physician)
• age < 18 years
• known or suspected pregnancy
• known bone metastases of a malignant disease
• known rheumatic disease
• metal implants in the region to be scanned
• surgical intervention over the last 12 months in the region to be scanned
• contraindications for MRI

Patients who are at least 18 years of age who are referred by the emergency department for a CT scan with the suspicion of a fracture.

We plan to share individual participant data upon request (pending final approval by the data protection officer of the university hospital).

Requests for sharing individual participant data will be considered at the time of publication of the first manuscript containing result data.

We plan to share data on request at this point in time.