Appendiceal CT scans are considered to be 98 percent accurate in diagnosing acute appendicitis when read by an experienced radiologist [9].
Can early appendicitis be missed on CT scan?
Park et al.9 reports the overall sensitivity of CT for diagnosis of acute appendicitis is 96.4%, meaning nearly 4% of acute appendicitis will be missed with CT alone.
How accurate is a CT scan for appendicitis?
COMPUTED TOMOGRAPHY
It has a diagnostic accuracy rate for acute appendicitis of 93 to 98 percent. 11 In a recent meta-analysis, findings on CT increased the certainty of diagnosis more than findings on ultrasonography.