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A Levy-Jennings plot has ______ as the X-axis and _______ as the Y axis

Which of the following small instruments is the most sensitive? 

Bar phantoms are used to evaluate __________ and ________________.

According to 10 CFR 35, the limit for removable contamination is:

A source is reading 463 cps in the well counter. The background is 182 cpm. What is the net count rate in cpm? 

Which of the following attenuation methods uses a standard attenuation coefficient of soft tissue applied to the entire matrix of a SPECT image? 

Each of the following contribute to dead-time in PET imaging except: 

How frequently is this QC test performed on SPECT systems? 

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

The QC test on the dose calibrator that determines the instruments ability to measure the activity of a known standard in called_____.