Radiology Exam

To help avoid molar overlap, the radiographer should place the film packet:

To minimize canine-premolar overlap, the radiographer should direct the ray beam slightly from the:

To compensate for a shallow palatal vault, the vertical angulation may be adjusted to:

Which area of the oral cavity would require the highest exposure setting?

The presence of a large mandibular tours may make which of these difficult?

The best film packet placement for a patientt with a torus palatinus is:

The paralleling technique is the best technique for imaging edentulous areas. The bisecting technique is the best technique when imaging endodontic treatment.

Which of the following radiographs would be the lease beneficial for the totally endentulous patient?

The exposure setting for edentulous regions should be:

Which of the following would be the best film holder for imaging working radiographs exposed during a root canal procedure?

Localization adds which of the following dimesnsions to two dimensional radiographs?

Which of the following methods of localization utilizies a cross-sectional occlusal radiograph?

If the tube shifts to the mesial and the object in question shifts to distal, the object is located on the lingual. This is an example of the definitive method of localization.

When exposing a disto-oblique periapical radiograph of the maxilla, which of the following changes should be made to the standard periapical radiograph?

To project an impaced mandibular third molar anteriorly onto the film, a mandibular disto-oblique periapical radiograph requires a:

What is pixel?

What is spatial resolution?

What is line pair?

What is analog?

what is gray scale?

A digital radiographic image exists as bits of information in a computer file. The computer transfers this information into an image that appears on the computer monitor.

Digital radiography systems can be used for which of the following?

When an existing fim based radiograph is digitzed via the use of a special scanner or digital camera, the process is called:

The smaller the number of pixels in the image the sharper the spatial resolution. Each pixel stores a number representing a different shade of gray.

Digital radiography can be used for which of the following?

All of the following are necessary equipment for digital radiography except one. Which on is this exception?

All of the following are digital image receptors except one. Which one is this exception?

Which of the following stores the x-ray energy until later stimulation by a laser beam reads the electron signal and converts it into a digital image?

Digital radiography requires less radiation exposure to produce an image than film based radiography becase the:

All of the following are true regarding digital radiography in comparison to film based radiography except one. Which one is exception?

All of the follwing are disadvantages of digital radiography when compared to film based radiography except one. Which one is this exception?

For which of these purposes are extraoral radiographs least suitable?

Which of these surveys is most frequently ordered by the orthodontist?

The general practitioner is most likely to use which of these extraoral radiographs?

What size film is generally used in cephalometric radiography?

Black artifacts on extraoral films may result from each of the following except one. Which one is this exception?

Intensifying screens will:

What term describes the crystals used in the emulsion of intesifying screens?

Fast intensifying screens have _____ sized crystals and _____ thickness of emulsion.

Rare-earth intensifying screens require less radiation to produce a quality image. Rare-earth intensifying screens emit blue light when energized by x-radiation.

Unsharp images result from which of the following?

Which of these radiographs would best image an impacted mandibular thrid molar?

Which of these radiographs would best image the maxillary sinus?

A panaoramic radiograph is valuable when diagnosing each of the following except one. Which one is this exception?

Which of these is an advantage of a panoramic radiograph when compared to an intraoral radiograph?

Which of these is a disadvantage of a panoramic radiograph when compared to an intraoral radiograph?

What is the term given to the technique where a slice of tissue is exposed distinctly, while structures outside of the designated area are blurred out of the image?

Which of the following panoamic machines must stop the radiation exposure to shift to the next pivotal point?

Which of the following rotational centers result in a split image panoramic radiograph?

What is the term given to the area where structures will be imaged with relative clarity, while structures outside this area are blurred on the image?

All of the following are compnents of most panoramic x-ray machines except one. which one is this exception?

Which of the following must be pre-set by the manufacturer of the panoramic x-ray machine?

Which of the following places is utilized to position the patient correctly within the superior infereior dimension?

Which of the following positioning errors results in anterior teeth that are blurry and diminished in size?

When the arches are rotated to the left, the teeth on the right side will be positioned closer to the film. The teeth closes to the film will appear blurry and magnified.

Which of the following positioning errors results in an exaggerated "smile" appearance of the arches?

The appearance of a large radiolucency that obscures the maxillary teeth apices result when:

Which of the following appears radiolucent on a panoramic radiograph?

Which of the following appears radiopaque on the panoramic radiograph?

Which of the following could be called a nagative shadow?

What is the term given to a structure that is imaged a second time, with less sharpness and on the opposite side?

List three air spaces that may be imaged on panoramic radiographs:

List three machine parts that may be imaged on panoramic radiographs: