“…2 AAC is typically associated with high morbidity and mortality if it is not managed in a timely manner. [3][4][5] Severe right upper quadrant pain, fever, and positive Murphy's sign with an elevated white blood cell (WBC) count on laboratory examination are diagnostic of AC; however, imaging studies, including ultrasound (US), computed tomography (CT), magnetic resonance imaging (MRI), and cholescintigraphy, play an important role in the confirmation of the diagnosis and detection of associated complications. 6 Each imaging technique has varied sensitivity and specificity values in the diagnosis of AC and has a different role to play in management; for example, while US is widely used for an initial examination in all patients suspected to have AC, MRI is reserved for patients who may have biliary obstruction.…”