Digital Imaging
Radiation Protection
Radiation Characteristics
Dental X-Ray Image Characteristics
Bitewing Technique
Exposure and Technique Errors
100
This is a type of radiographic image produced using a sensor
What is a digital image ( pg. 67)
100
This is used to reduce the size and shape of the x-ray beam to reduce patient exposure
What is collimation (pg 36)
100
In dental imaging, the quality of the x-ray beam is controlled by what?
What is kilovoltage? (pg. 43)
100
This appears most radiolucent on a dental image
What is air space (p.50)
100
Also known as the interproximal technique, this method is used to examine the interproximal surfaces of the teeth.
A: What is the bite-wing technique. p. 211
100
This term is used when the vertical angulation is too steep causing the tooth in the image to look smaller than the actual tooth. 
Foreshortened (p.232)
200
Digital imaging supports this radiation principle
What is the ALARA principle ( pg. 68)
200
The sum of inherent and added filtration
What is total filtration (pg. 36)
200
The overall blackness or darkness of an image is termed what?
What is density? (pg. 43)
200
Increasing this distance reduces magnification and improves image clarity.
What is the target-object distance? p. 56
200
Coronal portion of the alveolar bone found between teeth.
What is crestal bone, also known as the alveolar crest. p. 211
200
Term used when vertical angulation too flat
What is elongation (p.233)
300
Name 3 benefits of digital imaging
superior gray-scale resolution, reduced exposure to radiation, increased efficiency, low equipment and film cost, and increased speed of viewing (p.74)
300
The angle from the primary beam a dental radiographer should stand according to operator protection guidelines
What is 90-135 degrees (p. 39-40)
300
A term that refers to how sharply dark and light areas are differentiated or separated on an image.
What is contrast? (pg. 44)
300
A dental image with many shades of gray and few areas of true black or white is described as having this:
What is low contrast (p.52)
300
Used to position an intraoral receptor in the mouth and maintains receptor position during the imaging procedure. Eliminates the need for the patient to stabilize the receptor with a bite-wing tab.
What is a beam alignment device. p. 213
300
This causes the images to be distorted
What is incorrect vertical angulation (p.235)
400
Name 3 disadvantages of digital imaging
setup cost, sensor size, infection prevention, wear and tear, and legal issues (pg 75)
400
The equation for calculating the NCRP's recommended maximum cumulative occupational dose
What is age x 10 mSv (pg. 41)
400
The interval of time during which x-rays are produced.
What is exposure time? (pg. 44)
400
The type of contrast preferred in dental imaging
What is a compromise between short-scale contrast and long-scale contrast (p.52)
400
Refers to the positioning of the central ray in a side-to-side plane. When used correctly, the central ray is directed perpendicular to the curvature of the arch and through the contact areas of the teeth.
What is horizontal angulation. p. 214 and 215
400
Name this error
Film crease (p.237)
500
Digital imaging requires less radiation than traditional radiography because of this:
The sensor is more sensitive to x-rays (p.74)
500
The minimum total aluminum filtration required for a dental x-ray machine operating at or below 70 kV
What is 1.5mm (pg. 36)
500
The unit of measurement used to describe the amount of electric current flowing through the x-ray tube?
What is ampere? (pg. 45)
500
The one exposure factor that has a direct influence on the contrast of a dental image is
What is kilovoltage (p.52)
500
Name three of the five basic rules that must be followed when using the bite-wing technique.
A: What is receptor placement, receptor position, vertical angulation, horizontal angulation, and receptor exposure. p. 215
500
Name this error
Presence of a phalangioma (the image of the bones of a patient's finger) - p. 238