Exam (elaborations)
Radiology Final Exam 2024/2025
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Radiology Final Exam Radiology Final Exam Radiology Final Exam
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Radiology Final ExamIntra/retroperitoneal, bowel wall, biliary system - ANS Most common locations to find extraluminal air
Air beneath diaphragm, falciform ligament visualization , Rigler's Sign - ANS 3 major radiographic signs
of intraperitoneal air
Ruptured Appendix, Crohn's, UC, Surgical perforation, Gas-producing infections - ANS Causes of
extraperitoneal air
9 cm - ANS Normal measurement of cecum
6 cm - ANS Normal measurement for large intestine
3 cm - ANS Normal measurement for small intestine
Trauma, stones, vascular structures - ANS What findings are not found with a CT w/ ORAL contrast?
Gastrografin - ANS What oral contrast is used if perforation is suspected?
CT w/ oral contrast - ANS What imaging is used for non-traumatic abdominal pain, IBD, abdominal/pelvis
abscess, GI perforation?
CT w/ IV contrast - ANS What imaging is used for aortic dissection or aneurysm?
Ultrasound - ANS What imaging would you use for gallbladder, aortic aneurysm screening, vascular
abnormalities, ascites?
, 5mm - ANS Normal measurement for distended bladder wall
CT - ANS Imaging for ileus, obstruction, and volvulus
Sentinel Loop - ANS Often signals the presence of an adjacent irritative or inflammatory process in
presence of ileus
Cholecystitis - ANS RUQ localized ileus cause
Pancreatitis - ANS LUQ localized ileus cause
Appendicitis - ANS RLQ localized ileus cause
Diverticulitis - ANS LLQ localized ileus cause
Ulcer or kidney/ureter calculi - ANS Mid-abdomen localized ileus cause
Ileus - ANS Obstruction or ileus: Air in rectum or sigmoid
Generalized adynamic ileus - ANS The entire bowel is aperistaltic or hypoperistaltic. Swallowed air
dilates and fluid fills most loops of both small and large bowel
Post-op or DKA electrolyte imbalance - ANS Causes of generalized adynamic ileus
Lack of transition point - ANS What on a CT can help distinguish generalized adynamic ileus from SBO?
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