In Anger’s original camera, a ring of excess counts called ____________ was seen around the periphery of an intrinsic flood image.

Each of the following contribute to background in PET imaging except: 

“Butterworth” is a common type of: 

How does an increased mAs impact patient radiation dose? 

Calculate the 10% acceptable range for a dose calibrator when the source measures 62.6 uCi:

Conversion of 2D projections from the spatial domain to the spatial frequency domain is accomplished by the _____________.

A technologist is performing QC on a dose calibrator. He measures a standard source of Co57, Cs-137, and Co-60 three times each. For each radionuclide, the readings are averaged and compared to the calculated expected activity. The QC test the technologist is performing is: 

The most common problem affecting gamma cameras, presenting as a focal cold spot, is ___________.

In cardiac gated frame mode imaging using the R wave as the gating signal, each frame represents:

A typical mAs setting for CT may range from: