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radiology and dental
Disease Transmission and Infection Prevention Vocabulary Flashcards
| Question | Answer |
|---|---|
| ALARA concept | Concept of radiation protection that states that all exposures should be kept “as low as reasonably achievable.” |
| Anode (AN-ode) | 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. |
| (KATH-ode) | 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 | 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 (of radiation) | 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 (juh-NE-tik) 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 (EYE-on) | An electrically charged particle. |
| Ionization (eye-uh-ni-ZAY-shun) | Process by which electrons are removed from atoms, causing the harmful effects of radiation in humans. |
| Ionizing (EYE-uh-nye-zing) radiation | Radiation that produces ionization, resulting in harmful effects. |
| Kilovoltage (KIL-uh-voel-tuj) peak (kVp) | Highest voltage of x-ray tube used during an exposure. |
| Latent (LAY-tent) 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 (mil-ee-AM-peer) (mA) | One one-thousandth (1/1000) of an ampere; a unit of measurement used to describe the intensity of an electrical current. |
| Penumbra (puh-NUM-bruh) | The blurred or indistinct area that surrounds an image. |
| Personal radiation monitoring badge | A device that measures exposure of personnel to ionizing radiation by measuring the intensity of visible light emitted from a crystal in the detector when heated. The intensity of light emitted is dependent upon the radiation exposure. |
| Photon (FOE-ton) | A minute (tiny) bundle of pure energy that has no weight or mass. |
| Primary beam | The most penetrating beam produced at the target of the anode. |
| Primary radiation | Same as primary beam. |
| Quality (of x-ray beam) | The mean energy or penetrating ability of the x-ray beam. |
| Quantity (of x-ray beam) | The number of x-rays produced in the dental unit; the quantity of x-rays produced is controlled by milliamperage |
| Radiation | Forms of waves of energy emission through space or material. |
| Radiograph (RAY-dee-oe-graf) | Image produced on photosensitive film by exposing the film to radiation and then processing it. |