Question

A CT study of the brain to visualize MS plaques may be made more sensitive by using ____ delay after the contrast agent has been injected?

1) 45 sec
2) 15 min
3) 45 min
4) 2 hours

Answer 1

A CT study of the brain to visualize MS plaques may be made more sensitive by using 45 minutes delay after the contrast agent has been injected.

Step-by-step explanation:

A CT study of the brain to visualize MS plaques may be made more sensitive by using 45 minutes delay after the contrast agent has been injected. This delay allows the contrast agent to properly distribute and accumulate in the areas of interest, making the MS plaques more visible in the CT scan. A longer delay of 2 hours may lead to excessive diffusion of the contrast agent, decreasing its sensitivity in detecting the plaques.