DEN 130 1 H - Dental Radiology- 25

These flashcards cover key concepts, procedures, advantages, and disadvantages of panoramic imaging as outlined in the lecture notes.

What are the key purposes of panoramic imaging?

To evaluate dentition, detect diseases, examine jaws, and assess growth and development.

What is the focal trough in panoramic imaging?

A three-dimensional curved zone where structures are clearly demonstrated on a panoramic image.

What are common patient positioning errors in panoramic imaging?

Chin tipped up, chin tipped down, teeth anterior or posterior to the focal trough, and slumped posture.

How is panoramic imaging fundamentally performed?

The x-ray tubehead and receptor move around the patient to produce an image through tomography.

What is a ghost image in panoramic radiography?

An artifact caused by an object being penetrated twice by the x-ray beam, appearing indistinct and larger.

What are the advantages of panoramic radiography?

Wide field size, simplicity of the procedure, good patient cooperation, and minimal exposure to radiation.

What are some disadvantages of panoramic radiography?

Lower image quality compared to intraoral images, limitations of the focal trough, potential for distortion, and equipment cost.

What preparation is required for the equipment in panoramic imaging?

Loading the film, setting exposure factors, and adjusting the machine height according to patient size.

What is the role of intensifying screens in panoramic imaging?

To convert x-ray energy into visible light, therefore enhancing the film exposure.

What artifacts can result from incorrect use of a lead apron during panoramic imaging?

A radiopaque cone-shaped artifact that obscures diagnostic information.