Why expel air from cholangiogram?

Expelling air from a cholangiogram is important for several reasons:

1. Ensuring Accuracy: Air bubbles can obscure or interfere with the visualization of bile ducts and surrounding structures during a cholangiogram. Removing air allows for a clear and accurate interpretation of the biliary system.

2. Avoiding Misdiagnosis: Air bubbles can mimic or obscure abnormalities such as strictures, stones, or tumors within the bile ducts. By expelling air, radiologists can confidently identify true abnormalities and avoid misdiagnoses.

3. Providing Optimal Contrast Filling: Air bubbles can displace or dilute the contrast agent used during a cholangiogram, reducing the visibility of biliary structures. Expelling air ensures that the contrast agent fills the bile ducts properly, enhancing diagnostic capabilities.

4. Minimizing Artifacts: Air bubbles can create artifacts or distortions on the cholangiogram images, making it difficult to interpret the results accurately. Removing air reduces these artifacts and improves image quality.

5. Patient Comfort: The presence of air in the bile ducts can cause discomfort or pain for the patient during the procedure. Expelling air can alleviate this discomfort and improve patient experience.

Therefore, expelling air from a cholangiogram is essential for obtaining accurate and reliable diagnostic information, ensuring patient comfort, and reducing the risk of misinterpretation.