Practice Test ASRT CT Questions with Correct

Practice Test ASRT CT Questions with Correct Answers Rated A The z-axis refers to the ______ plane.

• coronal
• axial
• sagittal
• transverse - Correct Answer axial

Generators are often times located within the gantry. These types of generators are typically:

• full wave/three-phase.
• medium frequency.
• high frequency.
• multiwave/two-phase. - Correct Answer high frequency

Modern CT scanners rely on ____ to process acquired data. - Correct Answer minicomputers When the x, y and z planes (length, width and height) are equal, the volume data set is:

• isotropic.
• linear.
• anisotropic.
• rectangle-shaped. - Correct Answer isotropic

Which of the following factors decrease contrast resolution?

• small FOV
• smaller matrix size
• smaller pixel size
• higher mAs - Correct Answer smaller pixel size

Ct scanners x-ray tube voltages range from ____ to ___ kV 1 / 2

• 60, 100
• 80, 120
• 80, 140
• 100, 160 - Correct Answer 80, 140

Which of the following conditions is an indication for a CT scan of the head without IV contrast?

• stroke
• aneurysm
• metastatic disease
• arteriovenous malformation - Correct Answer stroke

When performing a routine chest CT scan, the scanner should be zeroed with the laser light at the:

• jugular notch
• xiphoid tip

c) EAM

d)top of shoulders - Correct Answer top of shoulders

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

• digital to analog conversion
• analog to digital conversion
• digitization
• quantization - Correct Answer DAC

Which of the following is the MOST effective type of CT detector?

• scintillation
• xenon gas

c)linear array

• photodiose - Correct Answer scintillation

If extravasation occurs, contrast can be dissipated by reducing its viscosity. This can be accomplished

by applying a:

• / 2