Which imaging study is typically used for suspected appendicitis?

A CT scan of the abdomen is the most widely used imaging study for suspected appendicitis due to its high sensitivity and specificity in diagnosing the condition. The scan allows for detailed visualization of the appendix, helping to identify signs of inflammation, such as an enlarged appendix, peri-appendiceal fluid, or the presence of an appendicolith. This imaging modality is particularly valuable in adult patients, where the clinical presentation may be less distinct.

Ultrasound is sometimes used, especially in pediatric patients, to minimize radiation exposure, but CT remains the gold standard in adults. Other imaging techniques like X-ray and MRI are not typically utilized in this scenario, as they do not provide the necessary detail for an accurate diagnosis of appendicitis. For instance, X-rays may miss the condition entirely and are not specific for appendicitis, while MRI is rarely used in this context due to its expense and limited utility compared to CT.