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Practice ARRT test Questions with Answers.
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Practice ARRT test Questions withAnswers
Which part of the X-ray tube describes the negative side of the tube and has two primary parts: a
filament and a focusing cup?
A. Anode
B. Cathode
C. Grid
D. Anode target - correct answers:B. Cathode
The cathode is the negative side of the X-ray tube and has two primary parts:a filament and focusing
cup. The focusing cup is a metal piece that surrounds the filament.
A quality control (QC) program is for:
1. Addressing patient care problems
2. Film processors
3. X-ray equipment
4. CT scanners
A. 2,3,4
B. 1,3,4
C. 1 only
D. 1,2,3,4 - correct answers:A. 2,3,4
A quality control program is for all instrument and equipment. A quality assurance program is addressing
patient care.
Collimator tests must be made to be accurate within:
A. 2 inches
B. 2% of the SID
C. 2% of OID
D. 2 mm - correct answers:B. 2% of the SID
, A optically stimulated luminescence (OSL) dosimetry system would use which of the following crystals?
A. Aluminum oxide
B. Sodium thiosulfate
C. Litium fluoride
D. Silver halide - correct answers:A. Aluminum oxide
Optically stimulated luminescence dosimeters uses aluminum oxide. The method makes use of electrons
trapped between the valence and conduction bands in the crystalline structure of certain types of matter
(such as quartz, feldspar, and aluminum oxide). Trapping sites are imperfections of the lattice-impurities
or defects.
The OSL dosimeter provides a new degree of sensitivity by giving an accurate reading as low as 1mrem
for x-ray and gamma ray photons with energies ranging from 5keV to greater than 40 MeV. The OSL
dosimeter's max equivalent dose measurement for x-ray and gamma ray photons is 1000 rem. For beta
particles with energies from 150 keV to in excess of 10 MeV, dose measurement ranges from 10mrem to
1000 rem. In diagnostic imaging the increased sensitivity of the OSL dosimeter makes it ideal for
monitoring employees working in low radiation environments and for pregnant workers.
To demonstrate the apophyseal joints of the lumbar vertebrae within AP projection, the patient is
rotated how many degrees?
A. 45
B. 30
C. 50
C. 15 - correct answers:A. 45
To demonstrate the apophyseal joints on a oblique projection of the lumbar vertebrae, rotate the body
45 degrees towards the side being examined. The 45 degree angle should demonstrate the lumbar
articular facets closer to the image receptor. If the fifth articular facet is in question, an additional view
with a 30 degree rotation should be obtained.
Which of the following is the most likely site for a lumbar puncture?
A. At the level of S 1-2
B. At the level of L 1-2
C. At the level of L 3-4
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