additional 1-6 module MIDTERM

biopsies

CT fluoroscopy is especially useful for:

multislice

Cone-beam artifacts only appear in _______ scanners.

streak

Edge gradient artifacts appear as a:

thinner slice thickness.

Partial volume averaging can be improved by using:

CT detectors

Sampling occurs at the:

2 and 3

Spatial resolution can be increased by using:

1. larger-size detectors

2. a smaller pixel size

3. thinner slice thicknesses

digital-to-analog conversion

To view a CT image on a LCD monitor, data must be undergo:

decreases

When manipulating an image using the zoom tool, the resolution:

isotropic

When the x, y, and z planes (length, width, and height) are equal, the volume data set is:

swivel

Which of the following image manipulation tools is most useful for viewing 3-D images?

voxel

Which of the following is associated with a 3-D representation of tissue volume?

dyspnea

Which of the following is not a common contrast injection reaction?

epinephrine

Which of the following medications may be used to treat bradycardia?

nitroglycerin

Which of the following medications most likely would be used to treat chest pain caused by angina?

diphenhydramine

Which of the following medications most likely would be used to treat urticaria (hives)?

naloxone

Which of the following medications reverses the effects of narcotics?

1 and 3

Which of the following quality control (QC) tests should be performed daily? 1. CT number calibration

2. CT couch indexing

3. standard deviation of the CT number in water

scanning with thinner slices

Which of the following techniques reduces edge gradient artifacts?

CT number flatness

Which of the following tests determines the uniformity of CT numbers throughout the image?

localization device accuracy

Which of the following tests uses a solid plastic phantom with two holes drilled into it at 90 degrees angle to form an "X"?

1 and 2

Which of the following workstation applications would most likely be used by cardiologists?

1. ejection fraction

2. calcium scoring

3. sterotaxis

neurology studies

Xenon studies are most closely associated with: