Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
x-ray RLS212
| Term | Definition |
|---|---|
| Aluminum Filter (P. 479) | A solid metal filter, usually made of aluminum that is put in the path of x-rays to eliminate the softt x-rays. (AKA: inherent filter) |
| American National Standards Institute (ANSI) (P. 483) | The organizationn that classifies dental x-ray film |
| Anode (P. 471) | The positive terminal of an electrolytic cell. |
| (ALARA) As low as reasonably achievable (P. 477) | The priciple of keeping radiation exposure "as low as reasonably achievable"; it involves combining radiation protectionprocedures with commonsense practices. |
| Atom (P. 473) | Makes up all matter, composed of a nucleus, inner core that is positively charged and negatively charged particles (electrons) that orbit the nucleus |
| Basal cells (P. 476) | Some of the deepest cells in the dermis. |
| Bremsstrahlung radiation (P. 479) | Is the primary type of radiation in the x-ray beam going out from the tubehead. |
| Cathode (P.471) | The negative terminal of an x-ray tube. |
| Central beam (P.479) | The primary ray emitting from the x-ray tube head. |
| Collimator (P.479) | A device used to eliminate peripheral radiation. |
| Contrast (P.478) | Difference between shades or colors. |
| Control Panel (P.477) | Device on a radiography machine where settings can be adjusted and changed and from which the operation of the machine takes place. |
| Density (P.478) | Degree of darkness on an x-ray. |
| Digital image (P.473) | An image made up of many small pieces to make a whole picture |
| Dosimeter (P.481) | A badge that monitors an individual’s radiation exposure and accumulated dosage in the office. Also known as the radiation monitoring device. |
| Electromagnetic Energy (P.473) | Radiation is a form of electromagnetic energy which travels in waves that move in straight lines at the speed of light which is 186,000 miles per second. |
| Electrons P.473 | Negatively charged particles that orbit the nucleus. |
| Emulsion P.483 | Part of the dental film, which is made of a homogeneous mixture of silver halide crystals suspended in a gelatin. |
| Fluorescence P.471 | A glow that results when a fluorescent substance is struck by cathode rays, light, or x-rays) was occurring on the other side of the room. |
| Focal Spot P.479 | Area on the anode that electrons hit during x-ray production. |
| Focusing Cup P.479 | Area on the anode that directs the electrons to the focal spot during x-ray production. |
| Genetic Effects P.476 | One of the classifications of the effects of radiations, that may not involve the primary individual exposed to the radiation. Genetic effects cannot be repaired and are passed to future generations. |
| Gray (GY) P.474 | The amount of ionizing radiation absorbed in a substance. |
| Halide Crystals P.483 | Are a component of film’s emulsion suspended in a gelatin; stores the energy from which they have been exposed and reacts with the chemicals in the processing tank to form a black region on the film. |
| Hard Radiation P.474 | Short wavelengths with high frequency, high energy, and high penetrating power. |
| Inherent Filter P.479 | This aluminum filter, known as the inherent filter, is placed in the path of the x-rays to eliminate the soft x-rays (those with low penetrating power). |
| Intensity P.478 | Is defined as the product of the quantity (number of photons from milliamperage) and the quality (penetration power of the photons from kilovoltage), together with the exposure time and distance. |
| Intraoral P.472 | Inside the mouth. |
| Ionization P.473 | Process by which atoms change into negatively or positively charged ions during radiation. |
| Kilovoltage (kV) P.478 | Kilovoltage is responsible for the quality or penetrating power of the central beam and contrast of x-rays, |
| Kinetic Energy P.479 | Energy of motion created during the x-ray process. Approximately 1% of kinetic energy is converted into useful x-rays. |
| Latent Image P.483 | Does not become visible until the film has been exposed to chemicals for a given time at a given temperature. |
| Latent Period P.477 | Latent period time elapsed between exposure and response. |
| Lead Apron P.476 | Lead shield with collar placed on the patient to limit their exposure to radiation. |
| Leakage Radiation P.474 | Escapes in all directions from the tube or tube head due to a malfunction or leakage. |
| long wavelengths P.474 | Have low energy, low frequency, and are unsuitable for exposing dental radiographs. |
| Mximum Permissible Dose (MPD) P.477 | The maximum dose of radiation that, would not be expected to produce negative effects in a life. |
| Milliamperage (mA) P.478 | Determines the amount or quantity of electrons. "Higher the (mA) the greater the amount of radiation." Effects degree of darkness (density). A measurement unit for electrical current. |
| Milliamperage Seconds (mAs) P.478 | Determine the amount of radiation exposure the patient receives. |
| Milliroentgen (mr) .474 | One one-thousandth (1/1,000) of a roentgen. |
| Mitosis P.476 | Cell division in the sex cells in which the number of chromosomes in each is reduced by one-half. |
| Neutrons P.473 | Neutrons are part of the nucleus that is not charged. |
| Position Indicator Device (PID) P.473 | The open-ended tube in a dental x-ray unit, commonly called the cone. |
| Primary Radiation P.474 A.K.A "Primary Beam" | Useful x-ray that produces the diagnostic image on x-ray film. High energy, short wavelengthx-rays that travel in a straight line. "Central Beam" of the x-ray tube head. |
| Protons P.473 | Protons are the positive charged part of the nucleus. |
| Radiation Absorbed Dose (rad) P.474 | Amount of ionizing radiation absorbed in a substance. |
| Radiation Monitoring Device P.481 A.K.A "Dosimeter Badge" | Dosimeter badge monitors an individual’s radiation exposure and accumulated dosage in the office. (worn at heart level, in the office only) |
| Radiographs P.471 | X-rays taken and processed to be used as a diagnostic tool. |
| Radiology P.471 | The science or study of radiation as it is used in medicine. |
| Radiolucent (RL) P.483 | Black region on the x-ray indicating where radiation passed through the tissue. |
| Radiosensitive P.476 | Condition of being sensitized and affected by radiant energy. |
| Relative Biological Effectiveness (RBE) P.476 | Measurement unit used to compare the biological effects of different tissues irradiated by different forms of radiation. |
| Roentgen (R) P.474 | The amount of radiation that ionizes one cubic centimeter of air. |
| Roentgen Equivalent Man (rem) P.474 | Is a radiation unit of measurement. Also called "Sievert" (Sv), |
| Scatter Radiation P.474 | Radiation that is deflected from its path as it strikes matter. |
| Secondary Radiation P.474 | Formes when the primary x-rays strike the patient or come in contact with any matter or substance. |
| Sensor P.473 | Used in place of the dental film to capture a digital image. |
| Short Wavelengths P.474 | Radiation wavelengths that have high frequency, high energy, and high penetrating power; also known as hard radiation. |
| Sievert (Sv) P.474 | Is a radiation unit of measurement. Also called "roentgen equivalent man" (rem). |
| Soft Radiation P.474 | Long wavelengths with low energy, low frequency, and low penetrating power; also called "Grenz rays." |
| Somatic Effects P.476 | The biological effects of radiation that leaves the individual in poor health and with cataracts, cancer, or leukemia. |
| Thermionic Emission P.482 | The process of heating the current to an extremely high temperature to allow electrons to be given off (during radiation production). |
| Transformers P,479 | Part of the tubehead where the voltage is adjusted up and down. |
| Tubehead P.479 | Where the x-ray tube and stepup and step-down transformers are located. |
| Tungsten Target P.482 | An area located on the anode, where electrons directed from the cathode hit. The anode tungsten target is attached to a copper stem that is located in the glass envelope in the tube. head. |
| X-rays P.471 | Invisible, odorless electromagnetic radiation. |
| X-ray Tube P.479 | Part of the dental x-ray unit that houses the coolidge, vacuum tube, filters, Collimator, and cone. |
Created by:
RSeabrooks
Popular Dentistry sets