Obtaining Great Images with the NOMAD™ Dental
The following is an overview of exposure techniques for the NOMAD Dental.
|NOMAD provides a high degree of flexibility, making it possible for exposures to be produced while the patient is reclined, lying on their back, or sitting upright.
- When taking images, hold the NOMAD using two hands; one on the handle and the other under the battery for increased stability and patient safety.
- To minimize cone-cutting, NOMAD must be properly positioned relative to the imaging system. (Check compatibility with film holding kits or aiming devices in advance. See note below as well as comments pertaining to PIDs in section 2.1, Radiation Safety in the NOMAD Dental User Manual.)
- Exposure times increase proportionally when the imaging angles vary from 90° or perpendicular to the film or sensor. To maintain low patient X-ray doses and keep the operator within the protection zone, request that the patient slightly tilt their head, and/or raise or lower their chin as needed. (Also see section 2.1, Radiation Safety.)
- When angled shots are required and the operator cannot be completely within the protection zone, ensure operator protection through the use of proper safety measures such as the use of a lead apron. (Also see section 2.1, Radiation Safety.)
- Position the NOMAD collimator so that it is almost touching the patient’s face. For hygienic reasons avoid touching the patient with the cone or backscatter shield, and/or use disposable plastic coverings.
- Determine what NOMAD time settings deliver optimal results for the type of digital or film-based imaging that is done on a regular basis. Note that digital imaging sensors and film speeds can vary somewhat in their characteristics and could require different exposure settings than the suggested nominal exposure times in the Technique Factor Chart in the . Adjust as needed to meet density preference.
- For an explanation of the relationship between shot duration and rest cycle between exposures (duty cycle), see section 2.2, Usage, in the NOMAD Dental User Manual.
Because the NOMAD is so easy to position, most practitioners find a positioning device is unnecessary. In most cases, the NOMAD collimator is held almost touching the patient’s face.
NOTE: NOMAD customers have reported success using a modified version of their existing Rinn-type positioning devices. The rod must be shortened so that the NOMAD backscatter shield can be flush with the positioning ring itself. The NOMAD backscatter shield should always be employed as far forward (toward the patient) as possible in order to function optimally.
Currently one company has created positioning devices exclusively for the NOMAD. This may be obtained from your dealer or by contacting ClikRay™, item # 001-220 (see http://www.clikray.com/clikray-for-aribex/).
NOTE: Aribex does not manufacture, sell, or formerly endorse any positioning device from any manufacturer. This information is provided solely for the convenience of our customers.
NOTE: Both digital imaging sensors and film speeds can vary somewhat in their characteristics and could require different exposure settings to meet density preference. NOMAD Dental User Manual for more information.)