CAMRT Radiography Practice Exam

What type of gas is produced when granules are administered during a GI series?

1. Oxygen

2. Hydrogen

3. Carbon dioxide

4. Nitrogen

The correct answer is: Carbon dioxide

During a gastrointestinal (GI) series, granules often refer to a type of effervescent contrast agent, commonly used to enhance the imaging of the digestive tract. These granules are typically composed of compounds that release carbon dioxide when they come into contact with the acidic environment of the stomach. The production of carbon dioxide gas is significant because it helps distend the stomach and intestines, allowing for better visualization during imaging. The presence of carbon dioxide is crucial as it improves the contrast effect, aiding radiologists in identifying abnormalities in the gastrointestinal system. The choice of carbon dioxide as the correct answer reflects its role in the process of enhancing the imaging quality during a GI series. Understanding the chemical reactions that occur with these effervescent granules is important for radiologic technologists, as it impacts the interpretation of the images obtained during the procedure.