PET AND CT STUDY GUIDE WITH COMPLETE SOLUTIONS

PET AND CT STUDY GUIDE WITH
COMPLETE SOLUTIONS
What does PET stand for? - ANSWER-Positron Emission Tomography

What is F18 FDG chemically similar to? - ANSWER-Glucose

What are the basic methods of attenuation correction for PET imaging? - ANSWER-
Transmission scan & Higher-resolution transracial CT scan

What is the formula to calculate CT numbers? - ANSWER-HUy = uy- u water/ u water

*u= linear coefficient

Which radiology modality incorporates functional imaging? - ANSWER-CT

What is functional imaging? - ANSWER-Used to align anatomic image with PET & uses
an attenuation correction map

What is BGO? - ANSWER-Bismuth Germanate; slow scintillator

What is a true event in PET? - ANSWER-When annihilation gamma rays strike two
detectors

What is a random event in PET? - ANSWER-When two different events happen and the
same time and strike at the same time

What is a scatter event in PET? - ANSWER-When one event with a lower energy
photon strike the detectors

What is a coincidence event? - ANSWER-two events are produced by the annihilation
process

What does daily QC look like on a PET scanner? - ANSWER-Blank scan, Uniform
cylinder, and Gain adjustment PMT baseline check

What CT QC is performed daily? - ANSWER-Tube warm-ip and HU Test with a water
filled phantom

What is a scout? - ANSWER-It is a localizer scan usually taken at 90 and 0 degrees in
order to define the CT ROI parameters

What replaces a PMT in a CT scanner? - ANSWER-photodiode