[2] Noncontrast CT in the emergency diagnosis ... For example, contrast is more likely to be of benefit in the patient with undifferentiated abdominal pain where acute appendicitis is a less ...

Radiographs (X-rays) of the abdomen and pelvis Fluoroscopic (contrast) exams of the gastrointestinal and genitourinary tracts Computed Tomographic (CT) and Magnetic Resonance Imaging (MRI) scans of ...