The major cause of gamma camera non-uniformity is the underlying non-uniformity of the:

The QC test that measures a dose calibrators ability to read accurately over a wide range of activities is known as the _________  and it should be performed _______.

Which of the following acts passed by the U.S.  Congress tied Medicare reibursement to department accreditation? 

The purpose of a halogen impurity in gas detectors is: 

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