1
CT REGISTRY REVIEW (MIC) NEWEST ACTUAL
2025/2026 WITH COMPLETE QUESTIONS AND
ANSWERS.VERIFED/GRADE A+
In order for an x-ray photon to be measured it must:
1. enter the detector chamber
2. be absorbed by the detector material
3. be converted to a measurable event - (ANSWER)1,2,3
Which system component converts the projection attenuation data into the
proper digital form for the array processor? - (ANSWER)analog-to-digital
converter
Which of the following is NOT a function of a PACS system?
a. reconstruction of the image from the raw data
b. long term data storage
c. digital distribution of images
d. image display for the radiologist - (ANSWER)reconstruction of the image from
raw data
Which of the following is not part of the CT tube?
a. tungsten target
b. collimator
c. rotating anode
,2
d. filament - (ANSWER)collimator
Which of the following is FALSE regarding CT systems?
1. they are limited to nonoblique transverse scanning
2. they cannot generate a straight coronal or sagittal image
3. hey have no moving parts - (ANSWER)1,2,3
Xrays are used in CT because:
a. they are easily produced by the high frequency generator
b. they are less harmful than the heating effects of microwave radiation
c. they penetrate the body according to specific attenuation characteristics of
each tissue
d. the FDA imposes no limit on the dose to the patient - (ANSWER)C
Most of the commands from the technologists are received by the: -
(ANSWER)operators console
Xrays are produced whenever fast moving electrons collide with any form of
matter because: - (ANSWER)The electron loses kinetic energy which is converted
into the emission of an x-ray photon
The mA determines the: - (ANSWER)quantity of x-ray photons
,3
Which of the following is a component NOT normally located in the gantry of a
modern CT system? - (ANSWER)array processor
Tube interscan delay time refers to: - (ANSWER)the time between the end of one
scan and the start of the next scan during which the tube will cool
Increased _______ will increase the likelihood that a given x-ray will penetrate a
material
1. kV
2. mA
3. exposure time - (ANSWER)1
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 - (ANSWER)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 - (ANSWER)2
, 4
Scatter radiation is caused by: - (ANSWER)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? -
(ANSWER)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? - (ANSWER)DICOM
The enormous heat that builds up in the CT tube is caused by what? -
(ANSWER)Collision of the electron beam with the tungsten target on the tube
anode
_________________ made helical imaging possible - (ANSWER)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 - (ANSWER)A
CT REGISTRY REVIEW (MIC) NEWEST ACTUAL
2025/2026 WITH COMPLETE QUESTIONS AND
ANSWERS.VERIFED/GRADE A+
In order for an x-ray photon to be measured it must:
1. enter the detector chamber
2. be absorbed by the detector material
3. be converted to a measurable event - (ANSWER)1,2,3
Which system component converts the projection attenuation data into the
proper digital form for the array processor? - (ANSWER)analog-to-digital
converter
Which of the following is NOT a function of a PACS system?
a. reconstruction of the image from the raw data
b. long term data storage
c. digital distribution of images
d. image display for the radiologist - (ANSWER)reconstruction of the image from
raw data
Which of the following is not part of the CT tube?
a. tungsten target
b. collimator
c. rotating anode
,2
d. filament - (ANSWER)collimator
Which of the following is FALSE regarding CT systems?
1. they are limited to nonoblique transverse scanning
2. they cannot generate a straight coronal or sagittal image
3. hey have no moving parts - (ANSWER)1,2,3
Xrays are used in CT because:
a. they are easily produced by the high frequency generator
b. they are less harmful than the heating effects of microwave radiation
c. they penetrate the body according to specific attenuation characteristics of
each tissue
d. the FDA imposes no limit on the dose to the patient - (ANSWER)C
Most of the commands from the technologists are received by the: -
(ANSWER)operators console
Xrays are produced whenever fast moving electrons collide with any form of
matter because: - (ANSWER)The electron loses kinetic energy which is converted
into the emission of an x-ray photon
The mA determines the: - (ANSWER)quantity of x-ray photons
,3
Which of the following is a component NOT normally located in the gantry of a
modern CT system? - (ANSWER)array processor
Tube interscan delay time refers to: - (ANSWER)the time between the end of one
scan and the start of the next scan during which the tube will cool
Increased _______ will increase the likelihood that a given x-ray will penetrate a
material
1. kV
2. mA
3. exposure time - (ANSWER)1
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 - (ANSWER)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 - (ANSWER)2
, 4
Scatter radiation is caused by: - (ANSWER)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? -
(ANSWER)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? - (ANSWER)DICOM
The enormous heat that builds up in the CT tube is caused by what? -
(ANSWER)Collision of the electron beam with the tungsten target on the tube
anode
_________________ made helical imaging possible - (ANSWER)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 - (ANSWER)A
