Which imaging study is frequently used to confirm suspected appendicitis?

The most commonly employed imaging studies to confirm suspected appendicitis are abdominal ultrasound and CT scan. These methods are preferred because they provide clear and detailed images of the abdominal organs, allowing healthcare providers to visualize the appendix effectively.

An abdominal ultrasound is often used, especially in children and pregnant women, as it does not involve radiation and can help identify inflammation or complications associated with appendicitis. A CT scan, on the other hand, is highly sensitive and specific for diagnosing appendicitis in a broader patient population. It can reveal not only the appendix itself but also any associated findings such as abscesses or perforation, which are critical in determining the course of treatment.

Other imaging modalities like MRI, while useful in specific cases, are not a first-line choice for appendicitis due to cost and availability. An abdominal X-ray is limited in its ability to visualize the appendix directly and is generally not used as a definitive tool for this diagnosis. A PET scan is primarily utilized for oncological assessments and evaluating metabolic activity within tissues, making it unsuitable for diagnosing appendicitis. Thus, the use of ultrasound or CT scan stands out as the most effective means for confirming this potentially serious condition.