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ch. 38 Term Words
| Question | Answer |
|---|---|
| ALARA concept | The concept of radiation protection that states that all exposures should be kept "as low as reasonably achievable" |
| Ampere | a unit of electric current |
| anode | the positive electrode in the x-ray tube |
| atom | the basic unit of matter |
| Bremsstrahlung radiation | Braking radiotion; the sudden braking 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 middle of the beam |
| contrast | differences in degrees of light 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 buttons |
| density | the overall degree or blackness of an image |
| dental radiography | the process of recording images of the teeth and adjacent structures by exposure to radiation |
| digital imaging | a filmless method of capturing an image and displaying it by using an image receptor, an electronic signal, and a |
| distortion | change in the size or shape of an image caused by incorrect vertical angulation |
| dose | The amount of energy absorbed by tissue |
| dosimeter | A device used to detect and measure an accumalated dosage of radiation |
| electron | A negatively charged particle in the atom |
| energy | The ability to do work |
| extension arm | A flexible arm that is attached to the x-ray tube head |
| genetic effects | The effects of radiation are passed on to future generation through germ cells |
| image | Film based or digitally produced recordings of anatomical structures |
| image receptor | The recording medium for an image, normally film phosphor storage plate or digital sensor |
| intensity | The total energy of the x-ray beam |
| ion | An electrically charged particle |
| ionization | The process by which electron are removed from atoms, causing the harmful effects of radiation in humans |
| ionization radiation | Radiation that produces ion resulting in harmful effects |
| kilovoltage peak (kVp) | The highest voltage of x-ray tubes used during an exposure |
| latent period | The time between exposure to ionization radiation and their appearance of clinical symptoms |
| lead apron | Device used to protect the reproductive and blood flowing tissues from scatter radiation |
| magnification | The proportional enlargement of an image |
| master switch,indicator light, selector buttons, exposure button | Components of the control panel |
| matter | Anything that occupied space has form or space |
| milliampere | A unit of measurement used to describe the quantity of an electrical current |
| penumbra | The blurred or in distinct area that surrounds an image |
| personal radiation monitoring badge | A device that measures exposure personal to ionization radiation by measuring the intensity of visual light emitted from a crystal in the detector when he did, the intensity of light admitted depends on the radiation exposure |
| photon | A minute bundle of pure energy that has no weight or mass |
| primary beam | The most penetration being produced at the target anode |
| primary radiation | The same as the primary beam |
| quality (of x-ray beam) | The mean, energy or penetration 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 produce is controlled by milliamperage |
| radiation | Forms of waves of energy emission through space or material |
| radiograph | The image produced on photosensitive, film by exposing the film to radiation and then processing it |
| radiology | The science are study of radiation as used in medicine |
| scatter radiation | A form of secondary radiation that occurs when an x-ray beam has been deflected from its path by interaction with matter |
| secondary radiation | X radiation that is created when the primary beam interacts with matter |
| sensor | A solid state image receptor that contains a silicon chip with an electric current |
| sharpness | The measure of how well an image reproducing find details of outlines of an object |
| somatic effects | The affect a radiation that causes illness and irresponsible to pour health, but are not passed down to future generations |
| thyroid collar | Accessible land shield there’s place securely around the neck |
| tubehead | The part of the F unit that contains the x-ray tube of the high voltage and the low voltage transformers and insulating oil |
| tungsten target | The focal spot in the anode |
| x-radiation | High energy, ionizing, electromagnetic radiation |
Created by:
Al3xander