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CH 39 - NELDA
| Term | Definition |
|---|---|
| automatic processor | machine that automates all film-processing steps |
| beam alignment device | assists in the positioning of the position indicator device |
| bitewing image | view that shows the crowns of both arches on one film |
| calcium tungstate | common type of phosphor |
| cassette | contains extraoral films during exposure |
| cephalometric film | shows the bony and soft tissue areas of the facial profile |
| charge-coupled device (CCD) | solid-state image sensor used in intraoral digital imaging |
| digital image | electronic signals captured by sensors and displayed on computer monitors |
| digitize | scanning of traditional film-based radiographs into a digital image |
| duplicating film | film designed for use in film duplicating machines |
| emulsion | coating on the x-ray film that contains energy-sensitive crystals |
| extraoral film | film designed for use in cassettes |
| film speed | sensitivity of the emulsion on the film to radiation |
| intensifying screen | part inside an extraoral cassette that converts x-ray energy into visible light, which in turn exposes screen film |
| intraoral film | film designed for placement in the patient's mouth |
| label side | colored side of the film that faces the tongue |
| latent image | invisible image on the x-ray film after exposure but before processing |
| occlusal | radiographic view that shows large areas of the maxilla or mandible |
| panoramic film | used in cassettes to provide a wide view of both the upper and lower jaws |
| periapical | radiographic view that shows the crown, root tip, and surrounding structures |
| phosphor storage plate (PSP) | reusable film-sized plates coated with phosphor as the image receptor |
| positioning instruments | intraoral devices used to position and hold the film, sensor, or PSP |
| processing | series of steps that change exposed film into a radiograph; steps include developing, rinsing, fixing, washing, and drying |
| radiograph | image produced on photosensitive film by exposing the film to radiation and then processing it |
| teledentistry | process of using electronic transfer of images and other information for consultation and/or insurance purposes in dentistry |
| tube side | solid white side of the film packet that faces the x-ray tube |
| Advantages of Digital Radiography | Immediate image view, less radiation, ability to enhance/adjust images, and ease of communication with specialists. |
| Direct Digital Imaging | Uses a solid-state image receptor such as a sensor or Charge-Coupled Device (CCD). |
| Indirect Digital Imaging | Uses a reusable phosphor storage plate (PSP) that stores the image until scanned into a computer. |
| Purpose of Beam Alignment Devices | Assists with the positioning of the position indicator device (PID) relative to the tooth and film/sensor. |
| Purpose of Positioning Instruments | Positions and holds dental x-ray films or digital sensors in the mouth while reducing patient hand radiation exposure. |
Created by:
Cocoalover
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