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Rad #1 def test
| Term | Definition |
|---|---|
| Dental Radiography | The production of radiographs of the teeth and adjacent structures by the exposure of an image receptor to x-Rays |
| Radiology | The science or study of radiation as used in medicine |
| Compton Electron | An outer shell electron that is ejected from its orbit during Compton scatter |
| Copper Stem | A portion of the anode that dissipates heat away from the tungsten target |
| Frequency | The number of wavelengths that pass a given point in a certain amount of time |
| Ion Pair | A pair of ions, one positive and one negative, that results when an electron is removed from an atom in the ionization process |
| Milliamperage | In radiography, the quantity, or number, of X-rays emitted from the tube head |
| Molybdenum Cup | A portion of the cathode in the X-ray tube, focuses the electrons into a narrow beam and directs the beam across the tube toward the tungsten target |
| Photoelectric Effect | One of the interactions of xradiations with matter, the X-ray photon collides with a tightly bound, inner shell electron and gives up all its energy to eject the electron from its orbit |
| Contrast | How sharply dark and light areas are differentiated or separated on an image |
| Density | The overall darkness or blackness of an image |
| Half -value Layer | The thickness of material that, when placed in the path of the X-ray beam, reduces the exposure rate by one half |
| Intensity | The total energy of the X-ray beam |
| Inverse Square Law | A rule that states that "the intensity of radiation is inversely proportional to the square of the distance from the source of radiation" |
| Kilo voltage Peak | The maximum or peak voltage used during an X-ray exposure |
| Cumulative Effects | The additive effects of repeated radiation exposure |
| Dose Response Curve | A curve that can be used to correlate the "response", or damage, of tissues with the "dose", or amount of radiation received |
| Free Radical | An atom, molecule, or ion that has a negative, positive or zero charge |
| Ionization | The process of converting an atom into an ion |
| Radio sensitive | A cell that is sensitive to radiation |
| Somatic Cells | All the cells in the body, with the exception of the reproductive cells |
| ALARA Concept | A concept of radiation protection that states that all exposure to radiation must be kept to a minimum |
| Collimation | The restriction of the size and shape of the X-ray beam in order to reduce patient exposure |
| Inherent Filtration | Occurs when the primary beam passes through the glass window of the X-ray tube, the insulating oil, and the tube head seal |
| Maximum Permissible Dose | Maximum does equivalent that a body is permitted to receive in a specific period |
Created by:
ashleyi
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