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
Ch 38 foundations KT
foundations of radiography, radiographic equipment and safety
| Question | Answer |
|---|---|
| concept of radiation protection that states that all exposures should be kept as low as reasonably achievable | ALARA concept |
| the positive electrode in the x-ray tube | anode |
| the basic unit of matter | atom |
| the negative electrode in the x-ray tube | cathode |
| x-rays at the center of the beam | central ray |
| differences in degrees of blackness on a radiograph | contrast |
| the portion of the x-ray unit that contains the master swithc , the indicator light, the selector buttons, and the exposure button | control panel |
| the overall darkness or blackness of a radiograph | density |
| the process of making radiographs of the teeth and adjacent structures by exposure to radiographs | dental radiography |
| change in the size of an image on a radiograph caused by incorrect vertical angulation | distortion |
| the amount of energy absorbed by tissues | dose |
| a negatively charged particle in the atom | electron |
| the ability to do work | energy |
| flexible arm that is attached to the x-ray tubehead | extension arm |
| effects of radiation that are passed on to future generations through genetic cells | genetic effects |
| an electrically charge particle | ion |
| process by which electrons are removed from atoms, causing the harmful effects of radiation in humans | ionization |
| radiation that produces ionization, resulting in harmful effects | ionizing radiation |
| highest voltage of radiograph tube used during a radiograph exposure | kilovoltage |
| time between exposure to ionizing radiation and appearance of symptoms | latent period |
| device used to protect the reproductive and blood forming tissues from scatter radiation | lead apron |
| the proportional enlargement of a radiographic image | magnification |
| components of control panel | master switch, indicator light, selector buttons, exposure button |
| anything that occupies space and has form or shape | matter |
| one one thousandth of an ampere, a unit of measurement used to describe the intesity of an electrical current | milliampere |
| the blurred or indistinct area that surrounds an image | penumbra |
| a minute bundle of pure energy that has no weight or mass | photon |
| the most penetrating beam produced at the target of teh anode | primary beam |
| same as primary beam | primary radiation |
| forms of waves of energy emission through space or material | radiation |
| image produced on photosensitive film by exposing the film to radiation and then processing it | radiograph |
| the science or study of radiation as used in medicine | radiology |
| a form of secondary radiation that occurs when an x-ray beam has been deflected from its path by interaction with matter | scatter radiation |
| x-radiation that is created when the primary beam interacts with matter | secondary radiation |
| a measure of how well the radiograph reproduces the fine details or outlines of an object | sharpness |
| 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 | somatic effects |
| a flexible lead shield that is placed securely around the neck | thyroid collar |
| the part of the x-ray unit that contains the x-ray tube, the high voltage and low voltage transformers, and insulating oil | tubehead |
| a focal spot in the anode | tungsten target |
| high energy ionizing electromagnetic radiation | x-radiation |
Created by:
cynthia.fryer
Popular Dentistry sets