What happens to the viscosity of contrast media when it is kept at body temperature?

• A. Increases
• B. Decreases
• C. Remains the same
• D. Varies significantly

Answer: (B)

When contrast media is kept at body temperature, its viscosity decreases. This change occurs because most contrast agents are formulated as viscous liquids at room temperature and exhibit reduced viscosity when warmed to body temperature (approximately 37 degrees Celsius).

Lower viscosity is advantageous in medical imaging as it enhances the ease of administration through catheters, allows for a smoother flow through blood vessels, and contributes to better imaging quality. The reduction in viscosity at elevated temperatures facilitates quicker contrast distribution within the vascular system and improves the filling of vascular structures, which is critical for effective imaging during procedures like angiography.

Maintaining the correct temperature of contrast media is thus essential in clinical practice to ensure optimal performance and to minimize complications during the imaging procedure.