Tailored Helical CT Evaluation of Acute Abdomen

摘要: Helical computed tomography (CT) allows rapid, cost-effective evaluation of patients with acute abdominal pain. Tailoring the examination to working clinical diagnosis by optimizing constituent factors (eg, timing acquisition, contrast material used, means and rate administration, collimation, pitch) can markedly improve diagnostic accuracy. Rapid (>/=3 mL/sec) intravenous injection is required for optimal assessment pancreatitis, ischemic bowel, aortic aneurysm, dissection. Narrow collimation small reconstruction intervals help detect calculi in biliary system genitourinary tract. Tailored helical CT pyelonephritis usually involves several acquisitions through kidneys during various phases renal enhancement. In suspected infarction, protocol must include an acquisition corticomedullary phase. 5-mm lower abdomen pelvis used evaluate diverticulitis. Use both oral localize bowel perforation characterize related complications. hemorrhage consists initial unenhanced followed optional material-enhanced CT. Clear communication between radiologist, patient, referring physician essential narrowing differential into a prior