ARRT FINAL EXAM COMPLETE ANSWERS UPDATE

ARRT FINAL EXAM COMPLETE ANSWERS ( UPDATE )
• Which of the following is NOT a test performed as part of a quality-control(QC) program
to check the radiographic equipment?
A. reproducibility
B. number of repeat images due to technologist collimation errors
C. light field to radiation field alignment
D. central ray alignment: B
• A radiograph of an AP mortise projection of the ankle reveals that the lateral malleolus is
slightly superimposed over the talus and the lateral jointspace is not open.What is most likely
cause for this radiographic outcome?
a. Excessive plantar flexion of the foot and ankle
b. Excessive dorsiflexion of the foot and ankle
c. Insufficient medial rotation of the foot and ankle
d. Excessive medial rotation of the foot and ankle: C
• Contrast resolution of a CR/DR image is determined by the of thesystem.
a. matrix size
b. bit depth
c. sampling frequency
d. dynamic range: B
• A radiographic image of the LPO projection of the lumber spine reveals that the
downside pedicle is projected too far posteriorly on to the vertebralbody.What specific
positioning error is present on this radiographic image?
a. excessive rotation of the spine
b. tilt of the spine
c. incorrect CR placement
d. insufficient rotation of the spine: A
• A secondary barrier is designed to absorb radiation.
1. leakage 2. scattered 3. primary
a. 1 only
b. 2 only
c. 3 only
d. Both 1 and 2.: D
• A technologist can reduce his or her exposure during fluoroscopy by stepping: 1. back
from the patient. 2. behind the radiologist. 3. close to thepatient's head.
a. 1 & 3 only
b. 1 only
c. 2 & 3 only
d. 1 & 2 only: D