What to do if i am having an mri of the head with attention to the 5th nerve and meckel's cave what is this and what are they looking for?

5th nerve: The 5th nerve is the trigeminal nerve, so they are looking for abnormalities involving the trigeminal nerve. Meckel's cave is a space in which part of the trigeminal nerve(trigeminal ganglion) is located, so a complete 5th nerve evaluation must include Meckel's cave. They may be looking for things that could affect the 5th nerve: anatomic variations, masses, and inflammatory processes.