When it comes to diagnostic imaging of your heart—such as MRI, CT, SPECT, PET—it can be overwhelming to know what kind of scan is right for you. What is your doctor looking for, and what exactly does ...

Karin Rexroad peeks through the bore of the PET-CT scanner at LMH Health. Positron emission tomography, or PET, scans have long been used to diagnose cancer and determine how far it has progressed.

A PET scan uses radioactive sugar as a tracer, so you’ll need to switch to a low carb, no-sugar diet 24 hours before the scan. This means avoiding bread, pasta, cereal, milk, and starchy vegetables, ...