__________ occurs because unfiltered backprojection uses the low-frequency data repeatedly as it backprojects 2D projections.

When a Geiger counter is used to measure a radioactive source and its cover is removed, what type(s) of radiation are being measured?

As a hole diameter __________, photons at greater angles pass through the collimator without being absorbed.

In a normal distribution, what percentage of measurements fall within two standard deviations of the mean?

How often should bar phantoms be acquired on a gamma camera?

I-131 imaging is best performed with which type of collimator?

__________ imaging is a series of images taken sequentially, each set for a length of time.

What kind of artifact is produced when the Center of Rotation (COR) is incorrect during a 180-degree acquisition?

Match the following MRI Zones:

__________ characterizes positional deviations in a gamma camera image as a function of gamma ray energy and has particular application for multipeak isotope imaging with Ga-67, In-111, and Tl-201.