For picture archiving communications systems (PACS) to work, patient images must be stored in which format? 

Which of the following gases is used in gas detecting instruments? 

A sample produces a total of 546,416 counts in 2 minutes. The background is 32 cps. What is the counting rate of the sample in counts per minute? 

The low-atomic-number positron-emitting radionuclides are all created in a ____________.

The chance detection of photons from unrelated annihilations events within the coincidence timing window is called:

A technologists is performing a routine quality control check on the dose calibrator. The technologist is measuring standard sources of 137Cs, 133Ba, and 57Co three times each and comparing the mean measurement to the expected for each source. The test the technologist is performing is _____

Which of the following is a typical kVp setting for CT? 

Which immune cells are targeted by the HIV virus?

These immune cells are important for the early response towards viruses.

___________________________ is a type of immunodeficiency caused by a loss of immune function.  Examples include immunodeficiencies caused by exposure to chemicals or certain infectious agents.