Hi Dr. Landolfi;
Here is the next question from the group. First though, I want to pass on the sincere "thanks" expressed by many of the group members for your assistance.
We all are experienced with the MRI machine. What does a PET scan show, and when is it used? How about a CT scan?
Thank you (as always)
Bruce
The doctor's response...
CT scan is very good for looking at blood. We use when people can't have an MRI, like when they have a pacemaker. PET scan or MRI spectroscopy is used when we see what looks like progressive enhancement and tumor on an MRI scan in a patient that has had prior radiation. It can help tell the difference between radiation necrosis and active tumor. Lesions need to be larger than 1cm to make the PET effective.
Dr. Landolfi