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Stack #4628489
| Term | Definition |
|---|---|
| Alara concept | Concept of radiation protection that states that all exposures should be kept “as low as reasonably achievable.” |
| Anode | The positive electrode in the x-ray tube. |
| Atom | The basic unit of matter. |
| Bremsstrahlung radiation | “Braking radiation.” The sudden deceleration of electrons as they interact with highly positively charged nuclei. |
| Cathode | The negative electrode in the x-ray tube. |
| Central ray | X-rays at the center of the beam. |
| Contrast | Differences in degrees of blackness on an image. |
| Control panel | The portion of the x-ray unit that contains the master switch, the indicator light, the selector buttons, and the exposure button. |
| Density | The overall darkness or blackness of an image. |
| Dental radiography | The process of recording images of the teeth and adjacent structures by exposure to x-radiation. |
| dental imaging | A filmless method of capturing an image and displaying it by using an image receptor, an electronic signal, and a computer to process and store the image. |
| distortion | Change in the size of an image caused by incorrect vertical angulation. |
| dose | The amount of energy absorbed by tissues. |
| dosimeter | A device used to detect and measure an accumulated dosage of radiation. |
| electron | A negatively charged particle in the atom. |
| energy | The ability to do work. |
| extension arm | Flexible arm that is attached to the x-ray tubehead. |
| genetic effects | Effects of radiation that are passed on to future generations through genetic cells. |
| image | Film-based or digitally produced recordings of anatomic structures. |
| image receptor | A recording medium for an image, normally film, phosphor storage plate (PSP), or a digital sensor. |
| intensity | The total energy of the x-ray beam. |
| ion | An electrically charged particle. |
| ionization | Process by which electrons are removed from atoms, causing the harmful effects of radiation in humans. |
| ionizing | Radiation that produces ionization, resulting in harmful effects. |
| kilovoltage peak | Highest voltage of x-ray tube used during an exposure. |
| latent period | Time between exposure to ionizing radiation and appearance of symptoms. |
| lead apron | Device used to protect the reproductive and blood-forming tissues from scatter radiation. |
| magnification | The proportional enlargement of an image. |
| master switch, indicator light, selector buttons, exposure button | Components of control panel. |
| matter | Anything that occupies space and has form or shape. |
| milliampere | One one-thousandth (1/1000) of an ampere; a unit of measurement used to describe the intensity of an electrical current.penumbra |
| photon | A device that measures exposure of personnel to ionizing radiation by measuring the intensity of visible light emitted from a crystal in the detect The intensity of light emitted is dependent upon the radiation exposure. |
| primary beam | A minute (tiny) bundle of pure energy that has no weight or mass. |
| primary radiation | The most penetrating beam produced at the target of the anode. |
| quality | Same as primary beam. |
| quantity | The mean energy or penetrating ability of the x-ray beam. |
| radiation | The number of x-rays produced in the dental unit; the quantity of x-rays produced is controlled by milliamperage. |
| radiograph | Forms of waves of energy emission through space or material. |
| radiology | Image produced on photosensitive film by exposing the film to radiation and then processing it. |
| scatter radiation | The science or study of radiation as used in medicine. |
| secondary radiation | The science or study of radiation as used in medicine. |
| sensor | A form of secondary radiation that occurs when an x-ray beam has been deflected from its path by interaction with matter. |
| sharpness | X-radiation that is created when the primary beam interacts with matter. |
| somatic effects | A solid-state image receptor that contains a silicon chip with an electric circuit. |
| thyroid collar | A measure of how well an image reproduces the fine details or outline of an object. |
| tubehead | Effects of radiation that cause illness and are responsible for poor health (such as cancer, leukemia, and cataracts) but are not passed on to offspring |
| tungsten target | A flexible lead shield that is placed securely around the neck. |
| x-radiation | The part of the x-ray unit that contains the x-ray tube, the highvoltage and low-voltage transformers, and insulating oil. |
| automatic processor | A focal spot in the anode. |
| beam alignement device | High-energy ionizing electromagnetic radiation. |
| bitewing | Machine that automates all film processing steps. |
| calcium tungstate | Assists in the positioning of the position indicator device (PID). |
| cassette | Image view that shows the crowns of both arches on one film |
| cephalometric film | Common type of phosphor. |
| charge-coupled device (CCD) | Contains extraoral films during exposure. |
| digital image | Shows the bony and soft tissue areas of the facial profile. |
| digitize | A solid-state image sensor used in intraoral digital imaging. |
| duplicating film | Electronic signals captured by sensors and displayed on computer monitors. |
| emulsion | Scanning of traditional film-based radiographs into a digital image. |
| extraoral film | Film designed for use in film duplicating machines. |
| film speed | A coating on the x-ray film that contains energysensitive crystals. |
| intensifying screen | Film designed for use in cassettes. |
| intraoral film | The sensitivity of the emulsion on the film to radiation. |
| label slide | The part inside an extraoral cassette that converts x-ray energy into visible light, which in turn exposes screen film. |
| latent image | Film designed for placement in the patient’s mouth. |
| occlusal | Colored side of the film that faces the tongue. |
| panoramic film | The invisible image on the x-ray film after exposure but before processing. |
| periapical | Radiographic view that shows large areas of the maxilla or mandible. |
| phosphor storage plate | Used in cassettes to provide a wide view of both the upper and lower jaws. |
| positioning instruments | Radiographic view that shows the crown, root tip, and surrounding structures. |
| processing | Reusable film-sized plates coated with phosphor as the image receptor. |
| radiograph | Intraoral devices used to position and hold the film, sensor, or PSP. |
| teledentistry | A series of steps that change exposed film into a radiograph. Steps include developing, rinsing, fixing, washing, and drying. |
| tube side | Image produced on photosensitive film by exposing the film to radiation and then processing it. |
| penumbra | Process of using electronic transfer of images and other information for consultation and/or insurance purposes in dentistry. |
| lead apron | Solid white side of the film packet that faces the x-ray tube. |
Created by:
vincentnguyen