COA Radiography & Diagnostic Imaging Flashcards
6 cards from real COA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 COA Radiography & Diagnostic Imaging flashcards as text
Which radiograph captures a full panoramic view of all teeth, both jaws, and surrounding structures in a single image?
Answer: Panoramic (OPG) radiograph
A panoramic radiograph (orthopantomograph) sweeps around the patient to capture a broad view of all dental and skeletal structures in one film.
What is the primary use of a cephalometric radiograph in orthodontic practice?
Answer: Analyzing skeletal and dental relationships for treatment planning
Cephalometric radiographs provide standardized lateral skull views used to measure skeletal and dental relationships for orthodontic diagnosis and treatment planning.
Which cephalometric landmark represents the most anterior point of the mandibular symphysis (chin)?
Answer: Pogonion
Pogonion (Pg) is the most anteriorly projecting point on the bony chin on a lateral cephalometric tracing.
What does the SNA angle measure in cephalometric analysis?
Answer: The anteroposterior position of the maxilla relative to the cranial base
The SNA angle (Sella-Nasion-A point) measures how far forward or backward the maxilla is positioned relative to the cranial base.
What is the standard focal-film distance used for cephalometric radiography to minimize magnification?
Answer: 150 cm
A standardized focal-film distance of 150 cm (approximately 5 feet) is used in cephalometric radiography to minimize magnification and ensure reproducibility.
Which radiation protection items should patients wear during orthodontic radiographs?
Answer: Lead apron with thyroid collar
Both a lead apron and thyroid collar are used together to shield the patient's body and thyroid gland from scatter radiation during dental X-rays.