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| Version | User | Scope of changes |
|---|---|---|
| Feb 16 2010, 6:37 AM EST (current) | AndyC | 79 words added, 9 words deleted |
| Jan 19 2010, 9:50 PM EST | AndyC | 48 words added |
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Glossary of terms index - A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
| Q - Glossary of Terms |
| Quadrant | (qwod'rant) A fourth; a quarter; any one of four equal parts of divisions, as of orbit or of abdomen. |
| Quadrate | (kwod'rat) Square or almost square in form; cubical; quadrate lobe of liver. |
| Quadriceps | Latin quadri = four, and caput = head; hence, a 4-headed muscle |
| Quality | A term referring to the penetrability or average energy of the X-ray beam. |
| Quality assurance (QA) | All planned and systematic actions necessary to provide adequate confidence that a facility, system, or administrative component will perform safely and satisfactorily in service to a patient. It includes scheduling, preparation and promptness in the examination or treatment, reporting of results, and quality control. |
| Quality control (QC) | All actions necessary to control and verify the performance of equipment. It is included in quality assurance. |
| Quantity | A term referring to the number of protons in the X-ray beam. |
| Quantum | An x-ray photon. |
| Quantum mottle | RadiographicA type noiseof producedradiographic bymottle (noise) due to the randomfact interactionthat the beam is composed of X-raysindividual withX-ray anphotons. In a particular region of the beam, there is a statistical variance resultant from the number of photons incident on the intensifying screen. The greater the number of photons in the region, the lower the quantum mottle. This effect is more noticeable when very high rare-earth systems are used at a high kVp. |
| Quantum theory | The theory in the physics of matter smaller than an atom and of electromagnetic radiation. |
| Quickening | (kwik'en-ing) First movement of fetus in utero felt by mother, usually occurring about midterm. |
Glossary of terms index - A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
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