DANB RHS 2024 Exam Questions and Answers
Which of the following measures the amount of radiation that reaches the surface of the skin? - Answer-Roentgen
The best way a dental assistant can minimize cross-contamination, when exposing radiographs is to - Answer-touch as few surfaces as possible
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DANB RHS 2024 Exam Questions
and Answers
Which of the following measures the amount of radiation that reaches the surface of the
skin? - Answer-Roentgen
The best way a dental assistant can minimize cross-contamination, when exposing
radiographs is to - Answer-touch as few surfaces as possible
Which of the following lesions appear as radiopaque on an image - Answer-Sclerotic
bone
Which of the following should be used to prevent cross contamination from the
exposure buttons - Answer-plastic cover
What image receptor, semi critical item should be sterilized before reuse - Answer-PID
Which of the following is a measurement of tissue damage from x-ray energy - Answer-
radiation absorbed dose
Leakage radiation is defined as any radiation that is - Answer-from the primary beam
Cells most susceptible to radiation damage are - Answer-bone marrow
Most bilateral findings in images are considered - Answer-normal anatomic landmarks
On an anterior image the anterior alveolar crest normally appears - Answer-pointed,
sharp
For x-ray machines, operating and ranges at or below 70 kVp the total aluminum
equivalent filtration must be a minimum of - Answer-1.5 mm
Which of the following must be monitored for radiation leakage - Answer-Dental x-ray
machines
Phosphor plates are processed by using - Answer-Laser beam technology
Which of the following may cause unnecessary radiation exposure to the patient -
Answer-Radiograph technique errors
When should gloves be worn while taking radiographs? - Answer-wear when placing
receptor into the mouth
, A full mouth series of periapical images taken on an endentulous patient will consist of -
Answer-Six anterior and eight posterior
When taking a panoramic radiograph, the patient's head should be oriented - Answer-
With the mid sagittal plane perpendicular to the floor
The diameter of the cone-shaped beam produced from a circular collimator is - Answer-
2.75 inches
When taking radiographs on small child, who cannot hold the sensor intro orally the
dental assistant should - Answer-Ask the parent or guardians to hold the sensor
To help desensitize the tissue prior to image receptor placement the dental assistant
should - Answer-rub a finger along the tissues where the receptor touches
What infection control steps are performed prior to during dental imaging procedures -
Answer--place barriers on tube head, dental chair, work area, and computer
-perform handwashing and don gloves
-cover sensor with barrier
Which of the following would cause elongation on a radiograph? - Answer-insufficient
vertical angulation
The median palatal suture is visible on which of the following images - Answer-Maxillary
anterior periapical
Patient did not remove earrings prior to exposing a panoramic image the radiograph
could have - Answer-Ghost images
Which of the following influences the sharpness of a radiograph - Answer-focal spot size
Which of the following is considered critical, and should be sterilized after use - Answer-
bite tab of XCP holder
The amount of radiation and exposure time needed to produce a diagnostic radiograph
is best determined by - Answer-exposure time
Which part of the x-ray machine should be covered or disinfected after each patient -
Answer-tubehead
Personnel radiation monitoring devices, or worn to - Answer-Record the occupational
exposure, received by the operator
Digital radiography, positioning devices should be - Answer-heat sterilized
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