Which imaging studies are most commonly used to evaluate abdominal pain?

The use of ultrasound and CT scans to evaluate abdominal pain is grounded in their effectiveness and availability. Ultrasound is a non-invasive imaging technique that provides real-time images of abdominal organs, allowing for the assessment of conditions such as gallstones, liver abnormalities, and appendicitis. It is especially useful in evaluating pain in the lower abdomen and is often the first-line imaging choice, particularly in children and pregnant women due to its safety profile.

CT scans, on the other hand, offer detailed cross-sectional images of the abdomen and pelvis. They are highly valuable in diagnosing conditions such as diverticulitis, pancreatitis, and bowel obstructions, among others. The speed at which CT scans can be performed and the comprehensive views they provide make them a key tool for emergency assessments of abdominal pain.

While other modalities like X-rays, MRIs, endoscopies, and PET scans have their roles in specific scenarios, they are not typically the first or most effective options for evaluating acute abdominal pain. X-rays are limited in abdominal diagnosis and are mainly used for detecting obstructions or perforations. MRIs are less practical in acute settings due to cost and time considerations. Endoscopy is invasive and not suitable for all abdominal pain evaluations, and blood tests provide supportive information