Key Questions - Gastrointestinal

How can mucosal, deep mucosal or submucosal, and extraluminal or subserosal lesions be differentiated from one another on a contrast study?
Can pancreatitis always be diagnosed on the basis of CT findings?
What are the normal calibers of the small bowel, the transverse colon, and the cecum?
What are the appropriate delay times for scanning in the arterial phase and portal venous phase for a 3 mL/s injection?
What seven signs of pancreatic adenocarcinoma are seen on CT?
What are the five segments of the liver?
Describe a logical approach to evaluating the abnormal small bowel.
Why is it important to know the location of the subsegments of the liver?
How are mechanical obstruction and adynamic ileus distinguished from one another?
Describe the concave margin sign
What is Crohn's disease?
Describe the sentinel clot sign
How does the size of an adenomatous polyp correlate with the likelihood of developing cancer?
What is the approach to evaluating a conventional abdominal radiograph?
What are the hypervascular liver tumors?
List three absolute contraindications to barium enema.
What is the initial study that should be used to evaluate RUQ pain, and why?