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Rad Safety 03/4/08
Rad safety 13.1-5
| Question | Answer |
|---|---|
| Nuclear Regulatory Commission (NRC) | Established in 1979 |
| NRC | limits the ammount of protection for workers and non-workers |
| Public law 86-373 | charges the Administrator of the EPA to advise the President with respect to radiation matters directlt or indirectly affecting health |
| title 9 of law 97-35 | Patient-Consumer Radiation Health and Safety Act of 1981 |
| Public Law 97-35 | provides for the establishment of minimum standards by the Federal Government fo rthe Accrediatation of Education programs for persons who do administer radiologic procedures |
| Pub Law 97-35 | insures the Med/Den rad. procedures are consistent with rigorous safety precautions and standards |
| Natural radiation Orgins | Cosmic- (sun, stars), radioactive sub.- (radiopotassium, radiocardon, URANIUM), |
| Pub. Law 88-376 | collect data, inform, deciminate and analyze information |
| background radiation accounts for more than ______ of the exposure the general public receives | 50% |
| Manmade origin | Fallout, effluent from nuclear power plants, radioactive materials used in industries, med/den exposure |
| med/den xrays along with radioactive materials account for _______ of manmade radiation exposure ot general public | 90% |
| Cardinal principles of radiation protection to the patient are | time (decrease exposure), Distance (increased decreases scatter radiation(exposure) and shielding |
| Radiation Protection to personnel are | cover bucky slot, gloves, eyeglasses, increase distance, remain in shielding booth, dont hold patient, use immobilization devices if hold patient STAY OUT OF THE PRIMARY BEAM |
| protection to the public | keep radiation exposure well below adverse levels likely to be observed during a lifetime |
| ten radiation control principles | cardinal principles of radiation, be ware of false security, never stand in direct beam, always wear protective appearal, proper wearing of personnel monitoring device, never hold pat., use gonadal shields, examine female pelvis 10 afterperiod, collimate |
| Beam Limiting Devices (BLD) | apperature diaphragm, cones, collimator |
| aperature diaphragm | (simplest) on tube head |
| cones | primarily used in den |
| collimator | most commonly used and effective |
| purpose of BLD's | limit size of beam |
| Inherent filtration | between tube and collimator - beam must pass through glass envelope and cooling oil layer after leaving the target .5mm equivalent |
| added filtration | tiny sheet of aluminum attached between tube housing and collimator |
| increased filtration =increased beam quality | but decreased quantity |
| optimum kv = | decreased skin dose |
| shorter time = | decreased patient dose =reduced chance of motion |
| thickness greater 10cm | use grid |
| Who collects data information and deciminate, analyze information against radiation | NRCP |
Created by:
flexx
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