What imaging study is the most appropriate?
1- 36-year-old woman with right upper quadrant pain, fever, and leukocytosis. Exam reveals a positive Murphy’s sign. US - Chole
2- A 41-year-old previously healthy man presents with acute pancreatitis. CT
3- An 82-year-old man with acute pancreatitis. Clinical condition unimproved after 48 h of medical management. US
4- A 49-year-old woman with unexplained oropharyngeal dysphagia. barium swallow