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Unlike conventional dental film, digital receptors can be sterilized prior to use inside the patient’s mouth.

A. True B. False

Which of the following is NOT an advantage of digital radiography?

A. Technical image errors are eliminated. B. Images can be enhanced and viewed in different ways. C. Subtraction can be used to compare pre and post treatment. D. Equal or greater dose reduction can be achieved compared to intraoral film. E. Image can be viewed almost immediately on the computer monitor.

Each of the following is a type of digital receptor except one. Which is the exception?

A. PID B. CCD C. PSP D. SPP E. CMOS

Which of the following are advantages of using a long position-indicating device (PID)?

A. Enables the x-ray photons to emerge in a straighter line. B. Aids in producing a more accurate image. C. Reduces magnification of the image. D. Improves sharpness of the image. E. All of the above.

Which Principles of Accurate Image Projection are met by the paralleling technique?

A. Principles 1, 2, 3 B. Principles 3, 4, 5 C. Principles 2, 3, 4, 5 D. Principles 1, 2, 4, 5 E. Principles 1, 2, 3, 4, 5

Each of the following are descriptive of the paralleling technique except one. Which one is the exception?

A. Allows placement of the receptor in contact with the structures. B. Radiographs are easier to standardize with paralleling technique. C. Technique is easier to execute than the bisecting angle technique. D. Produces more accurate images than the bisecting angle technique. E. Directs the x-ray beam at a right angle to the structures and the receptor.

The factor that would most likely be increased when taking radiographs on larger than average patients is:

A. mA B. kVp C. Time D. Distance E. Filtration

The error present in the molar bitewing radiograph would be identified as:

A. Horizontal overlap B. Underexposure C. Elongation D. Cone-cutting E. Film bending

A cone-cut is the result of improper:

A. Vertical angulation B. X-ray beam centering C. Horizontal angulation D. Patient instruction E. Backward placement

The error present on this radiographic image is the result of:

A. Foreshortening B. Patient preparation C. Double exposure D. Overlapping E. Cone-cut

Foreshortening and elongation errors can be caused by:

A. Receptor position B. Vertical alignment C. Horizontal alignment D. A and B E. B and C

The error present in this periapical image is due to:

A. Horizontal beam angulation B. Vertical beam angulation C. Patient movement D. Improper exposure E. Processing error

To correct the error observed in question #12, the clinician would:

A. Increase vertical angulation. B. Decrease vertical angulation. C. Instruct the patient to sit very still. D. Realign the horizontal beam placement. E. Reposition the receptor more mesially.

The error demonstrated on this radiograph is the result of:

A. Improper vertical angulation B. Incorrect receptor placement C. Partial denture left in place D. Overexposure to x-rays E. Patient movement

When choosing the time for radiographic exposure, which of the following should be taken into consideration?

A. Receptor speed B. Projection being taken C. Patient size and stature D. Child or adult patient E. All of the above.

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Intraoral Imaging: Basic Principles, Techniques and Error Correction
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