DANB X-ray Exam 2023 with Questions And Answers.
The area of sharp focus in panoramic radiography is know as the - Answer B. Focal
Through
The Focal
... [Show More] Trough can be as narrow as ___ mm in the anterior region, making proper
imaging of the lower incisors difficult - Answer C. 3 mm
There are approximately ___ steps to follow in taking a successful panoramic imagine -
Answer D. 10
Screens used in panoramic imaging cassettes are approximately __ times more
sensitive to x-radiation than film - Answer C. 10-60
A dark black or gray area originating on one edge or corner of the film is most likely due
to - Answer B. Damaged Cassette (light leak)
A film that is very dark with loss of detail is most likely due to - Answer B. Overexposure
A white inverted V-shaped radiopacity on the bottom of the film is most likely caused by -
Answer C. Lead apron artifact
A panoramic radiograph shows small, narrowed anterior teeth with the spine visible on
both sides of the film. The patient was probably positioned __ on the bite rod. - Answer
A. Too far forward
A panoramic radiograph shows the mandible to be V-shaped and narrowed with the
condyles high on the film. The occlusal curve is exaggerated and the spine arches over
the top of the film. The patients head tilt was most likely pointing __ - Answer B. Too low
A large tapered vertical radiopacity in the center of the panoramic radiograph is usually
caused by the ghost of the spine due to - Answer C. Patient was slumping, neck was
curved
When the patient is properly positioned in the panoramic machine, they should feel -
Answer C. Like they will fall backwards if they let go of the handholds
If the patient fails to hold their tongue to the roof of their mouth during a pano what
could happen? - Answer D. All the above
- A large black shadow will be present between the tongue and palate
- Roots of the maxillary teeth may be obscured
- An airway shadow will result
After development, a panoramic radiograph shows strange artifacts that resemble
springs or boxes. Also the image appears to be reversed right to left. What happened? -
Answer B. Cassette was inserted into the machine backwards
Panoramic film is __ sensitive to green light than intraoral film and requires an __
safelight filter. - Answer D. More, Red
A lead apron used for panoramic radiography should never - Answer C. Extend above
the patient's collar
Which side of the film is placed towards the teeth and x-ray tube? - Answer B. White side
Which of the following film speeds requires the least amount of exposure? - Answer E. E
- The Fastest film
Which size film is considered the standard size and is most widely used in dental
radiography? - Answer B. 2
What is the correct procedure for the final wash of radiographs during manual
processing? - Answer C. 20 mins
When manual processing films, what is the ideal temperature of the developing
solution? - Answer D- 68 F (20 C)
What is the yearly maximum permissible dose for a radiation worker? - Answer B. 05 SV
How is the bisection of the angle technique described? - Answer C. Film is placed close
to tooth and at an angle
If the rollers are contaminated in the automatic processor, what will be the resulting
appearance on the radiograph? - Answer C. Streaked radiograph
Which exposure would be selected to view either the maxillary or the mandibular arch in
its entirety? - Answer C. Occlusal
What is the most likely cause of a dark area between the occlusal planes on the bitewing
radiograph? - Answer C. Failure of patient to bite together for exposure
During which trimester is the fetus most sensitive to x-radiation? - Answer B. First
Which film would be selected for viewing apical pathology? - Answer D. Periapical. [Show Less]