What happens to the photon as it strikes the Crystal?

Which of the following PET QC procedures is analogous with a high-count uniformity correction, and is accomplished through a high-count acquisition of a PET QC source for the purpose of correcting nonuniformities within the PET tomograph system? 

Calculate the correction factor for 364 uCi dose level if the expected value is 360uCi and the actual value is 352uCi. 

Which of the following will improve image contrast?

Center of Rotation should be performed on SPECT cameras at a minimum of: 

______________ collimators are used for PET imaging

Calculate the total pixels in a 256 x 256 matrix 

The path between two detectors in PET is referred to as:

Which of the following confidence intervals is most commonly used in nuclear medicine? 

Post-patient collimators do which of the following: