Term
| through which of the following routes can radon enter houses |
|
Definition
1. crawl spaces
2. floor drains and sump pumps
3. porous cement block foundations |
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Term
| which of the folowing is considered by the FDA to be the second leading cause of lung cancer |
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Definition
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Term
| in the electromagnetic spectrum, higher frequencies are associated with ___ wavelengths and ___ energies |
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Definition
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Term
| both occupational and nonoccupational dose limits may be stated in units of |
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Definition
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Term
| the millisievert is equal to ______ of 1 seivert |
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Definition
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|
Term
| the advantages of BERT method are |
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Definition
1. it does not imply radiation risk it is simply a means of comparison
2. it emphasizes that radiation is an inmate part of our environment
3. the answer given in terms of BERT is easy for the patient to comprehend |
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Term
| if the patient asks the radiographer a question about the irsks of radiation |
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Definition
| the radiographer should use his or her own intelligence and knowledge to answer the question |
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Term
| particles associated with electromagnetic radiation that have no mass or electric charge are |
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Definition
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Term
| which of the following is not a type of interaction between xradiation and biologic matter |
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Definition
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|
Term
| the probability of occurance of photoelctric absorption ____ as the energy of the incident photon decreases and the atomic number of the irradated atoms ___ |
|
Definition
| increases markedly; increases |
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Term
| which of the following are byparducts of photoelectric absorption |
|
Definition
| photoelectron and characteristic photon |
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Term
| differences in density level between radiographic images of adjacent structures as seen in a copleted radiograph define |
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Definition
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|
Term
| most radiation-induced cancers have a _____ of 15 years or longer |
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Definition
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|
Term
| when a technical exposure factor of 100kVp is selected |
|
Definition
| the energy of the average photon in the xray beam is about 33 keV |
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Term
| the passage of xray photon through a patient without interaction is called |
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Definition
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|
Term
| the process most responsible for the contrast between bone and soft tissue in a radiographic image is |
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Definition
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|
Term
| primary radiation is synonymous with |
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Definition
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Term
| which is not one of the five types of interaction between xradiation and matter |
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Definition
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Term
| reducing the amount of tissue irradated reduces the amount of ___ produced by small angle scatter |
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Definition
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|
Term
| attentuation is any process _____ the intensity of the primary photon beam that was directed toward a destination |
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Definition
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|
Term
| the term fluorescent yield refers to the number of ____ emitted per inner shell vacancy |
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Definition
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Term
| im which of the xray interactions with matter is the photon partially absorbed |
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Definition
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|
Term
| the interactions of xray photons with any atoms of biologic matter |
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Definition
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