Use of oral contrast in 2024: primer for radiologists
Aaroh Patel, Neeraj Lalwani, Ania Z. Kielar
Abstract
Oral contrast has been a critical component in computed tomography (CT) imaging of the abdomen and pelvis (AP) for many years [ 1 ]. However, modern imaging techniques have significantly enhanced resolution and clarity, reducing the reliance on oral contrast agents for differentiating anatomical structures and pathology. The use of oral contrast, particularly in the emergency department (ED), remains controversial due to concerns over cost, increased radiation exposure, and potentially prolonged throughput times without substantial impact on patient management [ 2 ]. While CT of the AP without oral contrast is commonly ordered for cases of acute abdominal pain, there are specific conditions where oral contrast may significantly improve diagnostic accuracy and patient care [ 2 ].