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108 study
midterm study guide
| Term | Definition |
|---|---|
| MSDS | Used to describe all the properties and safety procedures for a given substance |
| Secondary Labels | Placed on bottles containing chemicals that aren't in there oriial labeled bottle |
| OSHA | Occupational Safety and Health Act |
| Right to Know Act | Workers right to be informed about chemicals |
| Hazard Communication Standard | Ensures all hazardous chemicals are properly labeled and that companies are informed of these risks |
| Signal words | Used to indicate the relative level of severity of a hazard |
| ALARA | As low as reasonably achievable |
| Collimators or Diaphragms | Limit beam to area interest |
| Cone | Directs the X-ray beam |
| Filters | Limit radiation to thinner areas and direct to thicker areas |
| Gray | The S1 unit of absorbed dose |
| Grid | Absorbs scatter radiation |
| Millirem | 1,000 millirems equals 1 REM or 0.001 REM |
| MPD | Maximum permissible dose |
| RAD | radiation absorbed dose |
| REM | Dosage of ionizing radiation that will cause the same amount of injury to human tissue as 1 roentgen of X-rays |
| Scatter radiation | Secondary radiation that occurs when an X-ray beam has been deflected from its intended path |
| Sievert | SI unit of equivalent dose and effective dose |
| Anode | Positively charged electrode that has a tungsten target to receive the X-ray |
| Cathode | Generates the X-ray with a negative charge using a tungsten filament |
| Film fogging | Scatter radiation, excessive heat, or improper processing can cause this |
| Penumbra effect | Results in blurring at the edges of the image |
| Radiographic density | Degree of blackness on X-ray influenced by the mAs and kVp |
| Tungsten | Extremely rare heavy metal element essential in high-tech industry |