What is the purpose of a CT w/o?

A CT without IV contrast, often abbreviated as "CT w/o," is primarily used to visualize structures and diagnose conditions without the use of intravenous contrast agents. This imaging technique can be beneficial in scenarios where a patient has contraindications to contrast agents, such as allergies or renal impairment.

This type of scan can provide clear images of dense structures, such as bones, and is useful for assessing findings like fractures, certain tumors, and some internal bleeding. It is particularly effective for evaluating conditions like head trauma, where identifying hemorrhagic events is critical.

In contrast to other options, such as CT with oral or IV contrast, which enhance the visibility of vascular structures and organs, a CT without contrast focuses on the baseline anatomy and pathology. This clear imaging allows clinicians to make effective decisions regarding diagnosis and subsequent treatment without the potential complications that can arise from using contrast materials.