Digital
Radiology
Digital
imaging was introduced into dentistry in 1987. Digital sensors are used instead
of x-ray film. Sensors can be wired or wireless depending on the system used.
(Figures 77 and 78) Sensors and tube head placement are the same for digital
imaging as film and tube head placement is for traditional radiology. Most
standard radiographic machines can be converted to acquire digital images.
Digital imaging still uses ionizing radiation, and therefore, before any
radiographs are exposed, the patient must be protected with a lead apron and
thyroid collar. The apron must be properly placed to avoid interference with
the radiographic exposure.
The
sensors are slightly thicker than a regular film. Modified film holders must be
utilized in the placement of the sensors. These modified holders can be
purchased from any major dental supply company. The sensors can be reused
several times. Proper use of intraoral barrier and OSHA techniques must be
observed.
The
advantages of digital radiology are decreased exposure time to the patient,
elimination of darkroom processing time and exposure to processing chemicals,
immediate viewing, and ability to easily and cost effectively transmit directly
to third party facilities or affiliating dental offices. Additional computerized
advantages include the ability to enhance the image for viewing. Once an image
is in the computer, brightness and contrast and image reversal can be enhanced
for optimal viewing of tissue and bone levels. The radiograph can be rotated
and magnified to enhance details. An additional feature shows embossed images
creating a stacked effect of the oral tissues.
The main disadvantages are substantial start up costs including machinery and
operatory computer technology, and compatibility with other software program
and RAM capacity. Considerations must also be noted that although your office
may utilize digital radiography, other facilities may not and the transfer of
images between them could be more difficult.
 | |
| Figure 77 |
 |
| Figure 78 |
Summary
Proper
film and tube head placement are a critical component of the total radiographic
procedure.
Periapical,
bitewing, and occlusal surveys are critical components of diagnosis and
treatment of dental patients. Because of the exposure to ionizing radiation,
proper techniques must be employed to reduce radiation exposure to the patient
through the use of lead aprons, high speed film, and proper technique; thus
decreasing additional film retakes. As technology advances in dental radiology
operators must maintain current knowledge and adapt their abilities for the
best treatment of the patient.
No comments:
Post a Comment