Radiography Flashcards
7 cards from real ADAP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Radiography flashcards as text
What is the purpose of the developer solution in manual film processing?
Answer: Convert exposed silver halide crystals into black metallic silver
The developer chemically reduces exposed silver halide crystals to black metallic silver, converting the latent (invisible) image into a visible radiographic image.
A dental radiograph shows overlapping of the interproximal contacts between posterior teeth. What is the most likely cause?
Answer: Incorrect horizontal angulation of the X-ray beam
Overlapping of contact areas results from incorrect horizontal angulation — the beam must be directed through the embrasures between teeth, which requires precise horizontal alignment.
Which of the following best describes the latent image in dental radiography?
Answer: The invisible image created on the receptor by radiation exposure before processing
The latent image is the invisible pattern of energy changes captured in the emulsion or sensor after exposure but before processing or digital display.
What is the maximum permissible dose (MPD) of radiation for an occupationally exposed dental worker per year?
Answer: 50 mSv (5 rem) per year
The National Council on Radiation Protection (NCRP) recommends a maximum of 50 mSv (5 rem) per year for occupationally exposed workers.
Which structure appears as a radiolucent oval or round shadow between the roots of the maxillary central incisors on a periapical radiograph?
Answer: Incisive foramen
The incisive foramen (nasopalatine foramen) appears as a radiolucent oval or round shadow located at the midline between and below the maxillary central incisors.
What does a film badge (dosimeter) worn by dental personnel measure?
Answer: The cumulative radiation dose received by the wearer over a monitoring period
A film badge or dosimeter records the cumulative dose of ionizing radiation received by the wearer, typically monitored monthly or quarterly to ensure safe exposure levels.
What is the correct sequence of steps in manual dental film processing?
Answer: Developer → Rinse → Fixer → Wash → Dry
The correct manual processing sequence is: develop (to build the image), rinse (to stop development), fix (to remove unexposed crystals), wash (to remove chemicals), then dry.