Exam 30: Radiographic Techniques

Each of the following may be used to position the patient within the focal trough EXCEPT one. Which one is the EXCEPTION?

What is the name of the anatomic landmark that appears on a panoramic image as a long, narrow radiopaque spine that extends downward, from the inferior surface of the temporal bone, to just anterior to the mastoid process?

The x-ray tube head moves around the back of the patient while the cassette with image receptor moves around the front.

The glossopharyngeal air space will appear on a panoramic radiograph as an open area posterior to the tongue, continuing into the oral-pharyngeal region.

What is the area between the x-ray source and the image receptor that will be recorded in relative detail on the resultant radiograph called?

What is the name of the anatomic landmark that appears on a panoramic image as a radiolucent, round opening on the body of the mandible, near the roots of the mandibular premolars?

What is the name of the anatomic landmark that appears on a panoramic image as a thick radiopaque horizontal band superior to the maxillary teeth?

Each of the following statements regarding fundamentals of panoramic radiography is correct EXCEPT one. Which one is the EXCEPTION?

A frown appearance to the arches will result when the patient's chin is positioned too high.

What is the name of the anatomic landmark that appears on a panoramic image as a round, radiolucent opening in the temporal bone located anterior and superior of the mastoid process?

Ghost images and <KT>negative shadows enhance interpretation.

Which of the following would correct an exaggerated smile appearance of a panoramic radiograph?

If a resultant panoramic image shows a reversed smile (frown), the likely cause is that:

The focal trough of all panoramic radiographic machines is three-dimensional.

Each of the following will appear radiolucent on a panoramic radiograph EXCEPT one. Which one is the EXCEPTION?

What is the name of the anatomic landmark that appears on a panoramic image as a concave, depressed area of the temporal bone located anterior to the external auditory meatus where the head of the mandibular condyle rests?

Most panoramic machines have wide focal troughs in the anterior region.

If the patient's chin is tipped up, the image appears as an exaggerated smile.

Panoramic radiography is based on the principles of tomography.

What is the name of the anatomic landmark that appears on a panoramic image as a pea-shaped, radiolucent opening in the bone located between the roots of the maxillary central incisors?