Identification of bone marrow edema around the ankle joint in non-traumatic patients: Diagnostic accuracy of dual-energy computed tomography

•DECT can accurately depict bone marrow edema around the ankle joint in a cohort of non-traumatic patients.•DECT sensitivity and specificity in diagnosing bone marrow edema around the ankle joint were 89.7% and 81.8%, respectively.•The talar dome represented the most involved partition in our study.•Osteochondral lesions and stress fractures were significantly associated with the presence of bone marrow edema