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ARRT Practice Questions.
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ARRT Practice Questions.
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ARRT Practice Questions"Touching a patient without permission" is the legal definition of: - ANS-Battery
A caliper is a tool used by the radiologic technologist to accurately measure body part
thickness. Which method below describes how to properly use this tool? - ANS-Place
the tool around the body part in such a manner as to measure the central ray entrance
and exit positions
A chest radiograph is taken with a patient erect against the bucky with a 12:1 grid using
technical factors of 110 kVp and 5 mAs. What factors should be used on a dedicated
chest unit with an 8:1 grid? - ANS-110 kVp, 4 mAs
A common group of drugs that are used to promote defecation are termed: -
ANS-Cathartics
A device that acts like a camera in an indirect conversion detector is known as a
_________. - ANS-charge coupled device
A disadvantage of using magnification mode during fluoroscopy is: - ANS-the patient
receives additional dose
A metastatic bone survey usually involves imaging these bones:
1. Skull
2. Hands
3. Humeri
4. Femora
5. Pelvis
6. Spine
7. Feet - ANS-1, 3, 4, 5, 6
A patient develops hives several minutes after a radiographic contrast medium is
injected. Which type of drug may be given to the patient to counteract this reaction? -
ANS-Antihistamine
A patient is scheduled for a UGI and small bowel radiological procedures. The patient is
suspected of having a perforated colon. Which type of contrast medium is
contraindicated for the procedures? - ANS-Barium Sulfate
,A patient is to be scheduled for a BE, Abdominal US, and UGI. The proper sequence for
performing the procedures is: - ANS-Abdominal US, BE, UGI
A radiographic contrast medium that absorbs more radiation than the organ in which it is
placed is termed a(n) - ANS-Positive agent
A radiologist asks you to administer a radiographic contrast medium. The patient
collapses from anaphylactic shock. You may be protected from a lawsuit under the
doctrine of respondeat superior, meaning: - ANS-Let the master answer
A right lateral decubitus radiograph is taken of a patient with the grid placed behind the
patient. This is an example of a(n): - ANS-AP Projection
Added filtration in a diagnostic x-ray machine is used for the main purpose of reducing
radiation dose to the: - ANS-Patient's skin
All of the following are true of oxygen therapy EXCEPT: - ANS-oxygen therapy can be
prescribed by pharmacists and respiratory therapists
An extremity encased in a fiberglass cast requires what modification to exposure
factors? - ANS-Usually no increase in exposure factors is needed
An older x-ray tube that has evaporated tungsten on the tube window may cause which
of the following problems: 1) decreased tube output, 2) decreased half-value layer
(HVL), 3) arcing of the tube current - ANS-1 & 3
An optimal radiograph of the lumbar vertebrae of a geriatric patient requires a technique
of 70 kilovolts (peak) and 40 mAs. To reduce exposure to the patient and maintain
adequate radiographic density: - ANS-Increase kilovolts by 15 percent with a 50 percent
decrease in milliamperage-seconds
As the field size is increased with all other factors remaining constant, the scale of
radiographic contrast will: - ANS-Be lengthened
Automatic brightness control (ABC) and Automatic exposure rate control (AERC) are
components of fluoroscopic systems whose purpose is to ensure creation of images
with appropriate brightness while not exposing the patient to excess radiation. Of the
following examples of ABC programming, which one will deliver the lowest dose to the
patient? - ANS-System will increase kVp to a maximum before increasing mA.
, Cells are most sensitive to radiation when they are immature, undifferentiated, and
rapidly dividing. This summarizes: - ANS-The law of Bergonie & Tribondeau
Computed radiography acquires an image through: - ANS-the use of a storage
phosphor plate
Computed radiography plates respond to radiation with _____. - ANS-photostimulable
luminescence
Determination of radiological bone age is most frequently applied to the: - ANS-hand
and wrist
Direct action may occur after exposure to any type of radiation, but it is much more
likely to happen after exposure to: - ANS-high-LET radiation such as alpha particles
Dose area product (DAP) is a method of quantifying radiation dose based upon the
dose received by local tissue and the volume of tissue irradiated. Which of these
statements is/are accurate?
1. DAP may be a better indicator of stochastic risk than effective dose alone
2. DAP increases with increasing field size.
3. Exposing less tissue decreases DAP
4. DAP accounts for primary and leakage radiation - ANS-1, 2 and 3
During an ERCP, an endoscope is passed into the duodenum under fluoroscopic
control. "Spot" images are usually taken of the _____ duct(s)
.1. pancreatic
2. hepatic
3. common bile - ANS-1 & 3
During an operative cholangiogram, the surgeon injects the contrast medium directly
into the biliary system. Which of the following projections are typically done during this
procedure in surgery?
1. AP
2. AP oblique, RPO
3. AP oblique, LPO - ANS-1 & 2
During cardiopulmonary resuscitation (CPR) of an adult, the cardiac compression rate
should be about: - ANS-at least 100 compressions per minute
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