- Which of the following is Characteristic of a first-generation CT imager? (2/1)
Your answer:
fan beam
pencil beam
detector array
slip ring technology
rotate geometry
- Which of the following represents the three principle components of a CT imager? (3/1)
Your answer:
operating console,patient couch,high voltage generator
patient couch, gantry, high voltage generator
computer, high voltage generator, operating console
gantry, operating console, computer
reconstruction apparatus, operating console, patient couch
- Dynamic scanning is a term applied to (6/1)
Your answer:
high pitch spiral CT scanning.
overlapping scans.
15 or more conventional CT scans in rapid succession.
lower pitch spiral CT scanning.
zero interscan.
- Quantitative computed tomography (QCT) especially requires which of the following image characteristics? (7/2)
Your answer:
spatial resolution
contrast resolution
low noise
linearity
uniformity
- Contrast media administered for CT examination is principally removed from the body through the? (9/7)
Your answer:
lung.
colon.
esophagus.
kidney.
liver.
- Slice thickness is normally evaluated with? (10/23)
Your answer:
a test object containing a ramp.
the AAPM 10 mm multiple in insert.
the AAPM 5-pin insert.
a line pair phantom.
a partial volume phantom test object.
- The best way to correct a partial volume artifact during during spiral CT is to? (8/2)
Your answer:
change the reconstruction plane.
increase pitch.
use a thicker slice.
use a thinner slice.
reduce pitch.
- A principle characteristic of spiral CT is (5/1)
Your answer:
high kVp.
high mAs.
multislice imaging.
thin slice imaging.
continous rotation of the x-ray beam.
- The Analytical technique used to reconstruct most CT images is (4/1)
Your answer:
iterative reconstruction.
filtered back projection.
repetitive back projection.
two demensional Fourier transformation.
Fourier transformation.
- Computed Tomography (CT) results in a/an (1/1)
Your answer:
analog image.
image in time.
digital image.
curvilinear image.
linear image.