Which of given imaging modalities is preferred for evaluating soft tissue abscesses in abdomen?Question 19Select one:a.CT scanb.PET scanc.Ultrasoundd.X-ray

ainful for patients with peritonitis. A comparison of the effi-cacy of ultrasound v. CT scan is found in Table 30-2.MRI. MRI of the abdomen has a sensitivity of 0.95 (95% CI0.88–0.98) and specificity of 0.92 (95% CI 0.87–0.95) for iden-tification of acute appendicitis. 22 MRI is an expensive test thatrequires significant expertise to perform and interpret and isusually recommended in patients for whom the risk of ionizingradiation outweighs the relative ease of obtaining a contrastCT scan, i.e., pregnant or pediatric patients

Which imaging modality is preferred for diagnosing liver injuries?A) MRIB) Ultrasound (US)C) CT scanD) Angiography

ImagingImaging is often utilized to confirm a diagnosis of appendici-tis because a negative operation rate is acceptable in <10% ofmale patients and <20% of female patients. Routine use of cross-sectional imaging somewhat reduces the rate of negative laparot-omies. Imaging studies are most appropriate for patients in whoma diagnosis of appendicitis is unclear or who are at high risk fromoperative intervention and general anesthesia, such as pregnantpatients or patients with multiple comorbidities. Commonlyutilized imaging modalities include computerized tomography(CT), ultrasound (US), and magnetic resonance imaging (MRI).CT Scan. A contrast-enhanced CT scan has a sensitivity of0.96 (95% confidence interval [CI] 0.95–0.97) and specificity of0.96 (95% CI 0.93–0.97) in diagnosing acute appendicitis. 16,17Features on a CT scan that suggest appendicitis includeenlarged lumen and double wall thickness (greater than 6 mm)

Which imaging modality is best for diagnosing an acute epidural hematoma?Question 14Select one:a.MRIb.CT scanc.Ultrasoundd.X-ray

Which imaging modality is preferred for diagnosing a herniated disc?Question 37Select one:a.Ultrasoundb.CT scanc.MRId.X-ray