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ARRT Radiography Exam Review (200-300) -QUESTIONS WITH ANSWERS
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ARRT Radiography Exam Review (200-300) -QUESTIONS WITH ANSWERS
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ARRT Radiography Exam Review (200-300) -QUESTIONS WITH ANSWERS
A ________ is used to measure radiation in an area, storage areas for radioisotopes, doses
traveling through barriers, and patients who have radioactive sources within them. -
ANSWERS✔✔ Handheld Ionization Chamber
Handheld ionization chambers can measure exposure rates as low as ________ per hour. -
ANSWERS✔✔ 10 µGyᵃ
A ________ is used to detect radioactive particles in nuclear medicine facilities. -
ANSWERS✔✔ Geiger-Mueller Detector
Geiger-Mueller detectors read in ________ per minute. - ANSWERS✔✔ Counts
An autotransformer is also known as a ________ transformer. - ANSWERS✔✔ Variable
An autotransformer is constructed with: - ANSWERS✔✔ A single coil of wire with an iron
core.
The autotransformer is the source for selecting ________. - ANSWERS✔✔ kVp
Autotransformers operate on the principle of ________. - ANSWERS✔✔ Self-Induction
The ________ is in the x-ray circuit to indicate the voltage that is selected. - ANSWERS✔✔
Prereading Voltmeter
,The prereading voltmeter is prereading because it indicates the ________ that will be
flowing through the tube once the exposure is made. - ANSWERS✔✔ Kilovoltage
The prereading voltmeter is placed in the circuit between the ________ and the ________. -
ANSWERS✔✔ 1) Autotransformer
2) Step-Up Transformer
A ________ is used to regulate the duration of the x-ray exposure. - ANSWERS✔✔ Timer
The timer is wired in the circuit between the ________ and the ________. - ANSWERS✔✔
1) Autotransformer
2) Step-Up Transformer
Electronic timers allow exposures as low as ________. - ANSWERS✔✔ 1 ms or 1/1000
second.
The ________ provides the safest tube current in the shortest possible time. - ANSWERS✔✔
mAs Timer
The mAs timer measures the total ________. - ANSWERS✔✔ Tube Current
The mAs timer is located ________ the secondary coil of the step-up transformer. -
ANSWERS✔✔ After
The mAs timer is generally used with ________ generators. - ANSWERS✔✔ Falling Load
________ is used to provide consistency of radiographic quality. - ANSWERS✔✔ Automatic
Exposure Control (AEC)
, AEC consists of a flat ________ chamber that is located between the ________ and the
________. - ANSWERS✔✔ 1) Ionization
2) Patient
3) Image Receptor
AEC uses a ________ kVp, while the machine controls the ________. - ANSWERS✔✔ 1)
Fixed
2) mAs
The shortest exposure time possible with an AEC is ________. - ANSWERS✔✔ 1 ms or
1/1000 second.
A ________ is a modern generator that takes advantage of extremely short time capabilities
and tube heat-loading potential. - ANSWERS✔✔ Falling Load Generator
With a falling load generator, the radiographer sets ________ and ________, and the
generator calculates the most efficient method of obtaining the required ________. -
ANSWERS✔✔ 1) kVp
2) mAs
3) mAs
A ________ transformer consists of primary coils and secondary coils. - ANSWERS✔✔
Step-Up or High-Voltage
A step-up transformer requires ________ current in order to operate. - ANSWERS✔✔
Alternating
The ________ coil of a step-up transformer receives voltage from the autotransformer . -
ANSWERS✔✔ Primary
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