In each blank, try to type in the
word that is missing. If you've
typed in the correct word, the
blank will turn green.
If your not sure what answer should be entered, press the space bar and the next missing letter will be displayed. When you are all done, you should look back over all your answers and review the ones in red. These ones in red are the ones which you needed help on. : Radiation with sufficient energy to separate an electron from its : Radiation : True or False: Alpha Particles have a high LET : : True of False: have no mass and no charge: True : What are the three types of background radiation?: Cosmic rays, radiation, and Internal exposure : Medical x-rays, nuclear medicine procedures, and consumer products such as televisions and products, are all examples of what?: Man-made sources of : The amount of ionization by photons in air per unit mass of air.: Exposure : The SI unit for : C/kg : True or False: Exposure is only defined for ionization produced by interacting with air: True : The absorbed per unit mass of any material: Absorbed : The SI unit for : Gray (Gy) : True or : Alpha particles and neutrons have a greater biological effect than x-rays.: : The SI unit for dose : (Sv) : The factor for X-rays: : The quality for alpha particles: : The rate at which a isotope undergoes nuclear decay: : The two of Gas-Filled Detectors: Ionization and Geiger-Muller (G-M) detectors. : True or False: G-M counters are very sensitive, therefore, they are appropriate for detecting low levels of radiation or contamination: True : The amount of on an x-ray film; related to the amount of radiation received by the film: Optical : The NRC for: Regulatory Commission : Oversees the use of isotopes produced in reactors: The : Transportation of radioactive materials is the of what two agencies?: Department of Transportation (DOT) and the : LD 50/30 stands : The lethal dose of 50% of the population 30 days : Erythema, epilation, cataract formation, and infertility are all of what type of effect?: effects : induction, genetic effects, and embryologic and teratogenic effects are all examples of what type of effect?: Stochastic : ALARA for: As Low As Reasonably : A measure of the genetic risk to a as a whole from exposure to ionizing radiation of some or all members of that population: significant dose (GSD) : The effective dose equivalent, which is the limit for effects, is: 50 : The nonstochastic for the lens of the eye are: 150 : The total dose equivalent for an or a fetus is: 5 mSv : What are the four types of monitoring devices?: Film badge dosimeter, TLD, optically stimulated luminescence (OSL) dosimeter, and pocket ionization (pocket dosimeter) : True or False: TLDs are used in ring and badges.: True : True or False: In a TLD, the amount of light emitted is to the amount of radiation absorbed.: : Workload: How many patients will be treated per week and how much radiation will be given to each : Primary Beam Use : The fraction of time of use the beam will be at the wall : Factor: The fraction of time the area will be : Factors for shielding : Workload of the machine, Beam Use Factor for each wall, Occupancy Factor for each area adjacent to the therapy room, Distance from the source of radiation to the occupied area, and Effective Dose Equivalent limit for the occupied area. : Therapy rooms can exceed 1 mSv in 1 hour. , the room must have a warning sign that says what?: “Caution, High Radiation : Beam-on indicators are required on what three areas?: On the panel, at the entrance door, and on the treatment unit. : Entrance doors to therapy rooms must be equipped with a(n) ______ that will shut off the machine if the door is opened during treatment.: : Regulations require both _____ and ______ communication between the therapist and patient during treatment.: and Aural : What radiation warning signs are needed for LDR ?: Caution signs should be on the door, and the patient’s wrist, bed and chart. : Patients with LDR procedures are for how long?: 24 to 72 : For LDR , the position of the patient’s bed should be: So that the patient in the adjoining room will not receive an excess of effective dose equivalent limit for the general public; usually bed placed by a wall to a stairway or other little occupied area. : Develops standards of protection for users of x-rays and other ionizing .: Commission on Radiological Protections (ICRP). : This national makes recommendations for protection against exposure: The National on Radiation Protection and Measurements (NCRP) : The formula:
E = Wt (Wr) x absorbed dose,
is to what?: Equivalent Dose : Scatter or leakage radiation, coming from source or after interacting with the patient requires what type of barrier?: barrier : The formula to the half value layer is: HVL = 0.693/M ;
M: linear attenuation : True or False: Gieger counters can only detect the presence of radiation in the area, but quantify the amount of dose in the area.: True : True or : In a TLD, the amount of light emitted is proportional to the amount of radiation absorbed.: : True or False: A film badge can discriminate between different types and energies of : True : The three time-honored of radiation protection are: Time, Distance, and |
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