CT REGISTRY EXAM REVIEW 2026-2027 (MIC)
VERIFIED QUESTIONS AND CORRECT
ANSWERS GRADED A+
Which of the following are NOT commonly used on today's commercially
available CT scanners?
1. xenon detectors
2. fourth-generation technology
3. continous rotation technology
1,2
Which of the following statements is FALSE regarding occurrences after an x-ray
photon penetrates the detector aperture?
1. the photon can pass through the detector unmeasured
2. the photon is converted completely into a electron
3. the measured signal in enhanced by an amplifier
2
Scatter radiation is caused by:
deflections from the original trajectory of an x-ray photon through the patient
What control does the operator have over the x-rays in a CT exam?
the energy level and the quantity of x-rays can be selected
,Which of the following is the standard that's used to achieve compatibility for
image transfer between various imaging modalities, viewing stations, and printers
in a hospital?
DICOM
The enormous heat that builds up in the CT tube is caused by what?
Collision of the electron beam with the tungsten target on the tube anode
_________________ made helical imaging possible
Continuous rotation scanners
The patient table:
a. may move continuously during the scan
b. can never be positioned automatically by software due to safety precautions
c. remains stationary through the exam once it is initially positioned
d. only moves after each slice is completed
A
The main purpose of the detector is to:
capture x-ray photons and convert them to a measurable signal
,The cathode filament:
helps determine the size of the focal spot
Which of the statements in TRUE:
1. kV is the voltage potential between the tube cathode and anode while mA
ultimately controls the filament temp 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 the mA affect the operation of the CT x-ray tube, the two
parameters have no bearing on the image quality
1,2
The number of electrons that flow from the cathode to the anode is controlled by
the:
mA
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
3. they can be used in both third-generation and fourth-generation CT systems
1,2,3
, The slip ring on continous rotation CT scanners:
1. prevent the high voltage cable from winding up
2. allows the exam to commence more rapidly
3. eliminates the need for the reversal of gantry frame rotation
1,2,3
CT is commonly referred to as all of the following except:
1. computerized axial tomography
2. digital subtraction angiography
3. CAT-scan
4. computed tomography
2
Which of the following CT scanner designs does NOT use an x-ray tube?
1. first generation
2. PET/CT
3. electron beam CT
4. MDCT
3
VERIFIED QUESTIONS AND CORRECT
ANSWERS GRADED A+
Which of the following are NOT commonly used on today's commercially
available CT scanners?
1. xenon detectors
2. fourth-generation technology
3. continous rotation technology
1,2
Which of the following statements is FALSE regarding occurrences after an x-ray
photon penetrates the detector aperture?
1. the photon can pass through the detector unmeasured
2. the photon is converted completely into a electron
3. the measured signal in enhanced by an amplifier
2
Scatter radiation is caused by:
deflections from the original trajectory of an x-ray photon through the patient
What control does the operator have over the x-rays in a CT exam?
the energy level and the quantity of x-rays can be selected
,Which of the following is the standard that's used to achieve compatibility for
image transfer between various imaging modalities, viewing stations, and printers
in a hospital?
DICOM
The enormous heat that builds up in the CT tube is caused by what?
Collision of the electron beam with the tungsten target on the tube anode
_________________ made helical imaging possible
Continuous rotation scanners
The patient table:
a. may move continuously during the scan
b. can never be positioned automatically by software due to safety precautions
c. remains stationary through the exam once it is initially positioned
d. only moves after each slice is completed
A
The main purpose of the detector is to:
capture x-ray photons and convert them to a measurable signal
,The cathode filament:
helps determine the size of the focal spot
Which of the statements in TRUE:
1. kV is the voltage potential between the tube cathode and anode while mA
ultimately controls the filament temp 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 the mA affect the operation of the CT x-ray tube, the two
parameters have no bearing on the image quality
1,2
The number of electrons that flow from the cathode to the anode is controlled by
the:
mA
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
3. they can be used in both third-generation and fourth-generation CT systems
1,2,3
, The slip ring on continous rotation CT scanners:
1. prevent the high voltage cable from winding up
2. allows the exam to commence more rapidly
3. eliminates the need for the reversal of gantry frame rotation
1,2,3
CT is commonly referred to as all of the following except:
1. computerized axial tomography
2. digital subtraction angiography
3. CAT-scan
4. computed tomography
2
Which of the following CT scanner designs does NOT use an x-ray tube?
1. first generation
2. PET/CT
3. electron beam CT
4. MDCT
3
