DANB RHS Exam Questions with Correct Answers
Maximum Accumulated Dose: - Answer-based on worker's age.
MAD= (N - 18) x 5 rems/year
MAD= (N - 18) x 0.05 Sv/year
ALARA concept: - Answer-states that all exposure to radiation must be kept to a minimum, "as low as reasonably achieved"
Most eff...
DANB RHS Exam Questions with
Correct Answers
Maximum Accumulated Dose: - Answer-based on worker's age.
MAD= (N - 18) x 5 rems/year
MAD= (N - 18) x 0.05 Sv/year
ALARA concept: - Answer-states that all exposure to radiation must be kept to a
minimum, "as low as reasonably achieved"
Most effective method of reducing pt exposure to radiation: - Answer-fast films
The thyroid collar must be worn for all intraoral & extraoral films: (True or False) -
Answer-False
The dental radiographer should stand ______ degrees away from the primary beam: -
Answer-90-135
Which PID is preferred & why: - Answer-Longer (16-inch PID) is preferred because it
produces less divergence of the x-ray beam
Film Storage: (Temp & Humidity) - Answer-store in cool, dry place. Temp- 50-70
degrees F, Humidity- 30-50%
Penumbra: - Answer-fuzzy, unclear area that surrounds a radiographic image
Umbra: - Answer-clear area on the center of the film image (most focused area)
SLOB: - Answer-same lingual, opposite buccal
Describe the Role of Developer: - Answer-reacts w/ silver halide crystals on the film that
were affected by radiation, These crystals form the images
Describe the Role of Fixer: - Answer-removes any crystals that did not react, hardens
the emulsion, and preserves the image
Panoramic: - Answer-provides a view of the entire mx and md
Cephalometric: - Answer-provides a leteral view of the skull
Tomogram: - Answer-provides a view of sections of the TMJ
Who mounts film: - Answer-any trained dental professional
, When to mount film(s): - Answer-immediately after processing
Purpose/Why of Film Mounting: (4) - Answer-easier/quicker to view/interpret, easily
stored, decrease chance of error in determining pt. R/L, & decrease handling/damage to
emulsion
Information on Label for Mount: (4) - Answer-pt. full name, radiographers name, date of
exposure, doctor name
Radiolucent: - Answer-black areas- allow x-rays to pass through, greater penetration of
x-rays reach x-ray film
Radiopaque: - Answer-gray/white areas- resist passage of x-rays (block)
Radiograph(X-ray film): - Answer-a picture; recording medium
Convex dot: - Answer-surface towards tubehead or source of radiation
Concave dot: - Answer-away from tubehead or source of radiation
Labial: - Answer-facing patient to view (pt.'s right side, your left), convex
Lingual: - Answer-behind patient to view (pt.'s right side, your right), concave
Curve of Spee: - Answer-smile line curves up
Identification dot: - Answer-small, raised bump
What mounting is preferred by ADA: - Answer-labial
PPE in radiology: - Answer-gloves, eyewear, & gowns should be used at all times, Mask
is optional.
Place _____ barriers on all equipment to be ____ during procedure: - Answer-
removable, touched
Developing & Fixing solutions are/are not sterilizing agents: - Answer-are NOT
Density: - Answer-overall darkness or blackness
Milliamperage: - Answer-current coming in; tells you how many, # of, qt.
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