Final Exam Review

“For a 64 x 64 matrix, more time and more counts are needed per stop.”

• True

• False

For a 128 x 128 matrix less time and less counts are needed per image stop.

• True

• False

“If there are low counts, then less time is needed per image stop.”

• True

• False

“The greater the number of image stops, the better the statistics are for the acquisition.”

• True

• False

An appropriate number of projections is required to cancel the star artifact

• True

• False

A small organ on a large FOV (field of view) needs less zoom for more pixel coverage.

• True

• False

Using filters and smoothing reduces resolution.

• True

• False

How often is COR routinely done?

• Weekly

• Daily

• Monthly

• Quarterly

What filter is used for moderate to high count studies?

• Iterative

• Wiener and Metz

• Hanning

• Butterworth

All imaging are plagued by statistical variation, commonly referred to as                      

• Noise

• Signal

• signal to noise

• noise to signal