Term
| radiation passing thorugh the tube aperture and the beam limiting device |
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Definition
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Term
| radiation passign though the tube housing other than the useful beam |
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Definition
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Term
| the sum of scattered and leakage radiation |
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Definition
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Term
| material of sufficient atomic number and thickness to reduce the exposure rate of the useful beam to the Maximum permissible dose |
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Definition
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Term
| radiation barriers consist of |
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Definition
| primary and secondary radiation barriers |
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Term
| a wall to which the useful beam can be directed |
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Definition
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Term
| primary barriers have a minimum of ___ |
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Definition
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Term
| ____ is most commonly used for primary barriers |
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Definition
| lead bonded to sheet rock or wood paneling |
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Term
| primary barriers must be at least ___ ft high |
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Definition
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Term
| ____ may be used instead of lead in a primary barrier |
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Definition
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Term
| designed to shield against secondary radiation, less thick than primary barrier |
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Definition
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Term
| secondary barrier has a minumum of ___ |
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Definition
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Term
| ___ is a secondary barrier |
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Definition
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Term
| the use of the area being protected is of principal importance |
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Definition
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Term
| an area that is primarily occupied by radiology personnel and patients |
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Definition
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Term
| barrier is required to reduce exposure to a worker in the controlled area to less than ___ per week |
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Definition
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Term
| the design limit for an uncontrolled area |
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Definition
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Term
| the shielding required for an xray examination room depends on the level of activity in the room |
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Definition
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Term
| the percentage of time during which the xray beam is on and directed towards a particular wall |
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Definition
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Term
| ___ is considered a primary barrier |
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Definition
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Term
| exposure switch must be the ____ type |
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Definition
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Term
| increasing the distance form the source of radiation results in reduction in occupational exposure |
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Definition
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