Radiography Quiz

Which of the following statements is false?

• Intensity of the X-ray beam is always fixed for a specific X-ray machine and cannot be modified by the operator

• Intensity of the X-ray beam varies with the target material, the kVp, the mA, exposure time and source to film distance

• Intensity of the X-ray beam represents the total energy of the beam

• Intensity of the X-ray beam refers to both the quantity and quality of its photons

Ionization is:

• The process by which the atom becomes electrically neutral

• The process by which a neutral atom acquires a charge

• The process by which a neutral atom gains an electron

• The process by which neutral atom loses a proton

In this panoramic radiograph, which numbers indicate the pterygomaxillary fissure and the innominate line?

• 2=pterygomaxillary fissure, 19= Innominate line

• 6=pterygomaxillary fissure, 8= innominate line

• 2=pterygomaxillary fissure, 8=Innominate line

• 16 = pterygomaxillary fissure, 6= innominate line

How would you evaluate the quality of this radiograph in relation to its visual characteristics?

• It has low contrast

• It has low density

• It has medium density

• It has low contrast

What is the positioning error in this panoramic radiograph?

• Patient’s prosthetic appliances were not removed

• Patient’s head was slumped in the machine

• Patient’s chin was not positioned on the chinrest

• Patient’s head moved during exposure

According to the criteria for an optimal periapical technique, what is the error in this periapical radiograph of maxillary premolars?

• The teeth intended to be imaged are not imaged

• The interproximal contacts are not open

• The occlusal plane is not parallel to the floor

• The distance surface of the canine is not included

How could you evaluate the quality of this radioghraph in relation to its visual characteristics?

• It has low contrast

• It has medium density

• It has high density

• It has low density

In applying the SLOB rule for object localization, which of the following statements is true, in relation to the radiograph A and B presented here?

• The impacted canine lies buccally

• From radiograph A to radiograph B, the impacted canine moved at the opposite direction than that of the x-ray tube

• Radiograph A is a caninie radiograph and radiographB is an incisors radiograph

• The impacted canine lies lingually(palatally)

In this schematic drawing of panoramic zones, the diamond shaped blue zone in the middle is the zone where structures project as:

• Single real images

• Double ghost images

• Double real images

• Ghost images

The white arrows indicate which anatomical feature?

• Floor of maxillary sinus

• Alveolar Crest

• Floor of nasal cavity

• Maxillary tuberosity