Radiation Health And Safety Exam - - Questions With
Verified Solutions
When taking a panoramic radiograph of an obese patient, as compared to a
slim patient, exposure (kVp or mA) should Correct Answer - to be
increased
The major disadvantage of the bisecting angle technique is that Correct
Answer - Image distortion is more likely
The 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 button of the rack are of 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 for i 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 beam 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
Which of the following is MOST likely to contribute to the fogging of x - ray
film Correct Answer - light leaks in the dark room
Which of the following conditions will result in a radiographic image that is
too light? Correct Answer - Weak developing solution
The purpose of 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 a faster speed film requires Correct Answer - shorter exposure time
The 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 - Under washing
Verified Solutions
When taking a panoramic radiograph of an obese patient, as compared to a
slim patient, exposure (kVp or mA) should Correct Answer - to be
increased
The major disadvantage of the bisecting angle technique is that Correct
Answer - Image distortion is more likely
The 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 button of the rack are of 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 for i 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 beam 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
Which of the following is MOST likely to contribute to the fogging of x - ray
film Correct Answer - light leaks in the dark room
Which of the following conditions will result in a radiographic image that is
too light? Correct Answer - Weak developing solution
The purpose of 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 a faster speed film requires Correct Answer - shorter exposure time
The 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 - Under washing
