RADT 465 Rad. Prot. Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
| Question | Answer |
| What is the monthly gestational dose equivalent limit for the fetus of a pregnant radiographer? | 0.5 mSv (Saia, p135) |
| What are some sources of natural background radiation that contribute to whole-body dose? | Terrestrial radionuclides & internal radionuclides (Saia, p136) |
| Which x-ray interaction with matter is responsible for the most occupational exposure? | Compton scatter (Saia, p137) |
| What factors stimulate the occurrence of the photoelectric effect? | Absorbers having a high Z numbers & positive contrast media (Saia, p138) |
| What type of detector is a component of an optically stimulated luminescence? | Aluminum oxide (Saia, p139) |
| How is the definition of linear energy transfer (LET) best described? | A method of expressing radiation quality & a measure of the rate at which radiation energy is transferred to soft tissue (Saia, p140) |
| Late effects of radiation are also referred to as what? | Stochastic (Saia, p141) |
| Primary radiation must be at least ___ high and have ___ thickness of lead shielding. | 7 ft & 1/16-in (Saia, p139 & 142) |
| Which acute radiation syndrome requires large exposures before radiation effects become visible or noticeable? | Central nervous system (CNS) (Saia, p143) |
| What unit of measurement is used to describe occupational exposure? | rem (Sv) (Saia, p144) |
| Isotopes are defined as atoms that have what? | The same atomic number but a different mass number (Saia, p145) |
| What section of the GI tract is the most radiosensitive? | Small bowel (Saia, p146) |
| Filters in a film badge function to do what? | To measure radiation quality (Saia, p147) |
| Name some examples of late effects of ionizing radiation. | Leukemia, local tissue damage, & malignant disease (Saia, p148) |
| Which x-ray interaction is responsible for the most dose to the patient? | The photoelectric effect (Saia, p149) |
| If a dose of 50 mR per hour is produced with a distance of 3 feet from the source, what would the dose be after 20 minutes at a distance of 5 feet? | 6 mR (Saia, p 150) |
| Examples of secondary radiation barriers include what? | The control booth, lead aprons, & the X-ray tube housing (Saia, p 151) |
| How do intensifying screens constructed of rare earth materials help in lowering the dose to the patient? | They permit the use of lower mAs (Saia, p152) |
| What type of dose-response curve represents genetic and some somatic effects? | Linear, nonthreshold (Saia, p153) |
| What is the maximum permissible tabletop exposure rate during fluoroscopy? | 10 R/min (Saia, p154) |
| ___ radiation passes through the tube housing apart from the path and direction of the useful beam. | Leakage (Saia, p155) |
| Some examples of electromagnetic radiation include what? | X-rays, gamma, visible light, radio waves (Saia, p156) |
| How are lead aprons correctly checked for cracks? | By fluoroscoping them once a year (Saia, p157) |
| What are some examples of sources of radon exposure? | Indoors, in houses & smoking cigarettes (Saia, p158) |
| How are LET and RBE related? | Directly; if one increases, the other increases (Saia, p158) |
Created by:
meschnell
Popular Radiology sets