When taking a panoramic radiograph on an obese patient, as compared to a slim
patient, exposure (kvp or mA) should: - correct answer be increased.
The major disadvantage of the bisecting angle technique is that - correct answer
image distortion is more likely.
To reduce cross-contamination during radiography, the CDC and ADA
recommended that the operators do all of the following EXCEPT: - correct
answer take complete medical histories.
Ideally, a lead apron would be used - correct answer for any dental radiographs.
A full mouth radiographic series has just been processed manually. The operator
notes that the films on the bottom of the rack are of a different density. What
could have caused this? - correct answer Solutions were not stirred before
processing.
A film that has been exposed to scattered radiation will appear - correct answer
fogged.
X-ray exposure time should be increased if the patient is - correct answer a large
adult.
Before exposing a panoramic radiograph on a patient, the operator should
request the removal of all of the following EXCEPT - correct answer watch.
A parent refuses to have radiographs taken on his/her child. The dental assistant
should - correct answer inform the dentist and document parent's refusal.
Incorrect horizontal angulation of the primary bream produces - correct answer
overlapping of proximal surfaces.
Where is the radiographic landmark 'incisive foramen' usually located? - correct
answer maxillary anterior
Cephalometric radiographs are PRIMARILY indicated to evaluate - correct answer
jaw relationships.
When taking a panoramic radiograph, the patient's head should be oriented -
correct answer with the midsagittal plane perpendicular to the floor.
,Radiology Exam (Newest)
Which of the following is MOST likely to contribute to the fogging of X-ray film? -
correct answer Light leaks in the darkroom.
Which of the following conditions will result in a radiographic image that is too
light? - correct answer Weak developing solution.
The purpose for using film-holding devices when taking intraoral radiographs is to
- correct answer assist in correct film placement.
A film with thin density and a herringbone pattern across it is the result of -
correct answer film packet reversal.
A full mouth radiographic survey has just been processed manually. The top films
on the processing rack have a straight, clear border on the upper edge. This error
is caused by - correct answer too low a level of developer solution.
Using faster speed film requires - correct answer a shorter exposure time.
he life expectancy of radiographic processing solution depends upon all of the
following EXCEPT - correct answer temperature of the solution.
Insufficient washing of processed radiographic film will result in a - correct
answer brownish-yellow stain on the radiograph.
A radiograph turns brown over time. The MOST likely cause is - correct answer
underwashing.
Density of radiograph is controlled by all of the following EXCEPT - correct
answer OFD (object film distance).
When processing a radiograph, the darkroom overhead light was off, the safety
light was on, and the door was slightly open. What effect will exposure to minor
amounts of room light have on the processed radiograph? It will appear - correct
answer black.
Which method is considered MOST effective for handling and processing
radiographs to prevent microbial contamination? - correct answer cover with
barrier envelopes.
A person exposing X-rays can BEST be protected from scattered radiation by -
correct answer standing behind a lead barrier.
, Radiology Exam (Newest)
Radiographs mounted with the raised portions of the dots toward the observer
are examined as though the observer is. - correct answer outside the mouth
looking in.
A film accidentally exposed to white light between developing and fixing will
appear. - correct answer dark.
Stirring the developing and fixing solutions before manually processing films will -
correct answer provide uniform concentrations.
If there are no teeth to serve as guides, which of the following landmark indicate
a maxillary molar area radiograph? - correct answer Tuberosity.
Which of the following materials in MOST resistant to the penetration of ionizing
radiation. - correct answer Lead.
In which radiographic technique is the patient positioned in a device to support
the chin? - correct answer Panoramic.
What is the major advantage in using the highest speed film and higher
kilovoltage (kVP)? - correct answer Reduces the radiation to patient
The BEST way to correct a conecutting error is to - correct answer center
position indicating device (PID) cone.
If all known radiation safety precautions are exercised, an operator who is
pregnant can safely expose radiographs during the operator's - correct answer
entire pregnancy.
Should the exposure time change when radiographing an edentulous adult
patient versus an adult patient with a full dentition? - correct answer Yes, it is
decreased.
If a dental auxiliary's radiation badge report indicates exposure to small amounts
of radiation, what should be done first? - correct answer Evaluate the x-ray
equipment and techniques.
In dental radiography, it is necessary to have a filter to - correct answer
eliminate the less penetrating x-rays from the primary beam.
The BEST radiograph to choose to evaluate a suspected sublingual salivary duct
obstruction is - correct answer occlussal.
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