Diagnostic Procedures & Interpretation Flashcards
7 cards from real Radiation Health and Safety Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Diagnostic Procedures & Interpretation flashcards as text
A ghost image of an earring on a panoramic radiograph typically appears:
Answer: On the opposite side, higher and blurred
Ghost images are projected on the opposite side, higher and larger, due to the beam's upward angle.
A panoramic image with an exaggerated smile line and blurred anterior teeth is caused by:
Answer: Chin tipped too low
A chin tipped down gives an exaggerated smile line and distorted anterior teeth.
The best approach to a pregnant patient needing a necessary dental radiograph is to:
Answer: Proceed with a thyroid collar and lead apron when radiographs are clinically justified
Dental radiographs deliver very low fetal dose; needed images should be taken with ALARA and shielding.
A mandibular occlusal radiograph is most useful for detecting:
Answer: A salivary stone in the floor of the mouth
The mandibular occlusal view shows the floor of mouth, helpful for sialoliths.
What is the annual occupational whole-body effective dose limit in the US?
Answer: 50 mSv
The NRC limit is 5 rem (50 mSv) per year for radiation workers.
What is the annual effective dose limit for members of the general public from non-medical sources?
Answer: 1 mSv
The public limit is 0.1 rem (1 mSv) per year.
Cone beam CT (CBCT) is most appropriate for which diagnostic task?
Answer: Three-dimensional evaluation of an implant site
CBCT provides 3D volumetric information for implants, impactions, and pathology, but at a higher dose than intraoral images.
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