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CT Registry Review. MIC Questions and Answers 2024
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CT Registry Review. MIC
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CT Registry Review. MICTungsten is used as the target material on the tubes anode because it has a ___ atomic
number and a ___ melting point.
a. low, high
b. high, low
c. low, low
d. high, high - answerD. high, high
___ scanner design was the first to acquire four slices in a single rotation.
a. second generation
b. third generation
c. multi-row detector
d. continuous rotation - answerA. second generation
The enormous heat that builds up in the CT tube is caused by the:
a. intensity of the x-rays emitted from the tube
b. electron beam between the cathode and the anode in the tube
c. x-ray filter in the tube which absorbs the lower energy photons before they can enter
the patient
d. collision of the electron beam with the tungsten target on the tube anode - answerD.
collision of the electron beam with the tungsten target on the tube anode
The number of electrons that flow from the cathode to the anode in the tube is
controlled by the:
a. anode target
b. collimation
c. mA
d. kV - answerc. mA
The slip ring on continuous rotation CT scanners:
1. prevents the high voltage cable from winding up
2. allows the exam to commence more rapidly
3. eliminates the need for the reversal of the gantry frame rotation - answerall of the
above
Which of the following is NOT a part of the CT tube?
a. tungsten target
b. collimator
c. rotating anode
d. filament - answerb. collimator
, Which of the following are NOT commonly used on today's commercially available CT
scanners?
1. xenon detectors
2. fourth-generation technology
3. continuous rotation technology - answer1 and 2
Which system component converts the projection attenuation data into the proper digital
form for the array processor? - answeranalog-to-digital converter
X-ray photons are produced by a fast-moving electron:
1. colliding with an atomic nucleus
2. passing close to an atomic nucleus
3. colliding with an electron within an atom and ejecting it - answer1, 2, & 3
Which of the following is TRUE regarding solid state detectors?
1. x-ray photons cause the detectors to generate a flash of light
2. they are the detector type used on most CT scanners today
3. they can be used in both 3rd gen and 4th gen CT systems - answer1, 2, & 3
CT is commonly referred to as al of the following names EXCEPT:
a. computerized axial tomography
b. digital subtraction angiography
c. CAT scan
d. computed tomography - answerb. digital subtraction angiography
What control does the operator have over the x-rays in the CT exam?
a. the temperature and color of the x-rays can be tuned
b. the energy level and the quantity of x-rays can be selected
c. the volume and tone of the x-rays can be dialed
d. the phase and frequency of the x-rays can be adjusted - answerb. the energy level
and the quantity of the x-rays can be selected
Which of the following statements is TRUE?
1. kV is the voltage potential between the tube cathode and anode while mA ultimately
controls the filament current and thus, the temperature of the cathode filament
2. kV controls the energy level of the x-ray photons and mA controls the number of x-ray
photons emitted from the tube
3. although kV and mA affect the operation of the CT X-ray tube, the two parameters
have no bearing on image quality - answer1 & 2
Which of the following does NOT affect the quantity of x-rays that completely penetrates
the patient?
1. the distance that the x-ray photons must travel on their course through the patient's
body
2. the molecular composition of the tissues through which the x-ray photons pass
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