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ARRT mock exam
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Exam of 16 pages for the course System of Equations and Inequalities at System of Equations and Inequalities (ARRT mock exam)
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ARRT mock examA cathartic is used to - ANS-stimulate defecation
A compensating filter is used to - ANS-even out widely differing tissue densities
A grid with lead strips and aluminum interspacers that are angled to coincide with the
divergence of the x-ray beam is called a: - ANS-Focused grid
A lesion with a stalk projecting from the intestinal mucosa into the lumen is a(n) -
ANS-polyp
A minimum total amount of aluminum filtration (inherent plus added) of 2.5 mm is
required in equipment operated - ANS-above 70 kVp.
A patient developed hives several minutes after injection of an iodinated contrast agent.
What type of drug should be readily available? - ANS-Antihistamine
A radiographer who discloses confidential information to unauthorized individuals could
be found guilty of - ANS-invasion of privacy.
A universally accepted standard for exchanging medical imaging via a networked set of
display workstations, archive, and imaging modalities is: - ANS-DICOM
A wraparound image or image aliasing occurs when: - ANS-sampling occurs less than
twice per cycle
Acceptable method(s) of minimizing motion unsharpness is (are)
1. suspended respiration.
2. short exposure time.
3. patient instruction - ANS-1, 2, and 3
According to the NCRP, the annual occupational whole-body dose equivalent limit for
students under age 18 is - ANS-1 mSv
According to the NCRP, the annual occupational whole-body dose equivalent limit is -
ANS-50 mSv
All of the following affect patient dose except - ANS-focal spot size
,All of the following have an impact on radiographic contrast, except - ANS-Focal spot
size
All of the following rules regarding proper hand washing technique are correct except -
ANS-avoid using hand lotions whenever possible.
Although the stated focal spot size is measured directly under the actual focal spot,
focal spot size in fact varies along the length of the x-ray beam. At which portion of the
x-ray beam is the effective focal spot the largest? - ANS-At the cathode end
An exposure was made using 300 mA, 0.04-second exposure, and 85 kVp. Each of the
following changes will decrease the radiographic density by one-half except a change to
- ANS-10 mAs
An inanimate object that has been in contact with an infectious microorganism is termed
a - ANS-Fomite
AP erect left and right bending images of the thoracic and lumbar vertebrae, to include 1
inch of the iliac crest, are performed to demonstrate - ANS-Scoliosis
As the CR laser scanner recognizes various tissue densities, it constructs a graphic
representation of pixel value distribution called a - ANS-Histogram
As the x-ray tube filament ages, it becomes progressively thinner because of
evaporation. The vaporized tungsten is frequently deposited on the window of the glass
envelope. This may
1. act as an additional filter.
2. reduce tube output.
3. result in arcing and tube puncture. - ANS-1, 2, and 3
Aspirated foreign bodies in older children and adults are most likely to lodge in the -
ANS-right main bronchus.
Better resolution is obtained with - ANS-high SNR
Capacitor discharge mobile x-ray units use capacitors to power the
1. the x-ray tube.
2. machine locomotion.
3. the braking mechanism. - ANS-1 only
, Cells concerned with the formation and repair of bone are - ANS-Osteoblasts
Components of digital imaging include
1. computer manipulation of the image.
2. formation of an electronic image on the radiation detector.
3. formation of an x-ray image directly on the image receptor. - ANS-1 and 2 only
Disadvantage(s) of using low kV technical factors include
1. insufficient penetration.
2. increased patient dose.
3. diminished latitude - ANS-1, 2, and 3
During an intravenous urogram, the RPO position is used to demonstrate the
1. left kidney parallel to the IR.
2. right kidney parallel to the IR.
3. right kidney perpendicular to the IR. - ANS-1 and 3 only
Examples of nasogastric tubes include
1. Swan-Ganz.
2. Salem-sump.
3. Levin. - ANS-2 and 3 only
Examples of primary radiation barriers include
1. radiographic room walls.
2. lead aprons.
3. radiographic room floor. - ANS-1 and 3 only
Exposure factors of 80 kVp and 8 mAs are used for a particular nongrid exposure. What
should be the new mAs if an 8:1 grid is added? - ANS-32 mAs
Extravasation occurs when - ANS-contrast medium is injected into surrounding tissue
Features of x-ray tube targets that function to determine heat capacity include the
1. rotation of the anode.
2. diameter of the anode.
3. size of the focal spot. - ANS-1, 2, and 3
For medicolegal reasons, radiographic images are required to include all the following
information, except - ANS-the patient's birth date.
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