Author: Anonymous

Small objects and sharp edges (demonstrating greatest contrast) are represented by: 

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: 

There are two things that you must watch/correct for when using a pinhole collimator. What are they? (select all that apply)

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

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

As an image is being acquired, excessive pixel-to-pixel variation can be reduced by ___________.

The unit used in CT to describe tissue attenuation in each voxel is:

Regarding SPECT imaging, an area of increased count density can result in spillover of counts into nearby pixels. This is called: 

A typical mAs setting for CT may range from: 

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