MediAI

  Acute Cholecystitis on CT: Imaging Biomarkers, AI-Assisted Diagnosis, and Clinical Decision-Making for Emergency Radiology Keywords: Acute Cholecystitis, Gallbladder CT, Emergency Radiology, Medical Imaging AI, Radiology AI, Abdominal CT, Gallstones, CT Interpretation, AI Healthcare, Clinical Decision Support When Right Upper Quadrant Pain Becomes a Surgical Emergency A 56-year-old man presented to the emergency department with sudden-onset severe abdominal pain localized to the right upper quadrant. He reported nausea and progressive discomfort that had worsened over several hours. Physical examination demonstrated marked tenderness over the gallbladder fossa with a positive Murphy sign, while laboratory evaluation revealed inflammatory changes suggestive of an acute infectious process. Contrast-enhanced computed tomography (CT) demonstrated several characteristic imaging findings: Marked gallbladder distension Diffuse gallbladder wall thickening Mucosal hyperenhancement ...

Giant Intraventricular Arachnoid Cyst Incidentally Discovered After Minor Head Trauma When a Routine Trauma CT Reveals a Silent Congenital Brain Lesion: Radiologic Interpretation, Clinical Decision-Making, and the Future Role of Artificial Intelligence Clinical Hook Every day, emergency departments perform countless CT examinations following seemingly minor head trauma. Most reveal no significant abnormalities. Occasionally, however, imaging uncovers an entirely unexpected diagnosis—one unrelated to the patient's presenting complaint but potentially more important than the trauma itself. Such incidental findings often challenge radiologists, emergency physicians, and neurosurgeons alike. The present case beautifully illustrates this scenario. A previously healthy 22-year-old man presented after striking his head against the windshield during a motor vehicle collision. Neurological examination was entirely normal. CT was performed solely to exclude traumatic intracranial i...