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Imaging of acute appendicitis and it’s complications. Imaging modalities. Plain films US CT. Plain films. Calcified appendicolith Focal ileus. US diagnosis of appendicitis. Compression US technique. An appendix diameter of > 6 mm Wall thickness of > 3 mm
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Imaging modalities • Plain films • US • CT
Plain films • Calcified appendicolith • Focal ileus
US diagnosis of appendicitis • Compression US technique. • An appendix diameter of > 6 mm • Wall thickness of > 3 mm • Dilated non-compressible fluid filled lumen
CT • Technique: • CT abd/pelvis without any contrast • Oral contrast • IV contrast • Rectal contrast
CT Findings in Acute Appendicitis • Normal appendix • Appendicolith (Presence of appendicolith and abdominal pain has a sensitivity of 90% for acute appendicitis) • Enlarged appendix, 7-10 mm (Previously 6 mm) • Peri-appendicular inflammation-linear streaky densities in peri-appendicular fat • Abscess
Enlarged and inflamed appendix with wall thickening and peri-appendiceal inflammation