I had a CT Simulation at Mayo Phoenix. This was a day after carbon seeds were planted in my prostate. After the CT Simulation was a High Resolution MRI of my pelvic region. No fasting, nothing other than just show up. Not being claustrophobic, the scans were a piece of cake, just lie as still as possible and breath with as little motion as possible. On the inside of the tube of one machine little animals were printed.

My understanding was the CT Simulation used X-Rays. And the machine was a tube exactly like an MRI machine or PSMA PET/CT machine in overall appearance/dimensions.

The kindness, pleasantness and professionalism of nurses made the experience interesting and enjoyable.