S2. Rad Bio Final

• tissue weighting factor of bone surface and skin:

  0.01
• tissue weighting factor of bladder, breast, liver, esophagus, thyroid, remainder (brain, adrenals, kidneys, muscle, pancreas, spleen, thymus, uterus):

  0.05
• tissue weighting factor of red bone marrow, colon, lung, and stomach:

  0.12
• tissue weighting factor of gonads:

  0.20
• the smaller the number of the tissue weighting factor, the __________ radiosensitive the tissue is

  less
• annual effective dose limit for occupational exposure:

  50 mSv (5 rem)
• cumulative effective dose limit for occupational exposure:

  10 mSv (1 rem) x age in years
• equivalent dose annual limit for lens of eye for occupational exposures:

  150 mSv (15,000 rem)
• equivalent dose annual limit for localized areas of the skin, hands, and feet for occupational exposures:

  500 mSv (50,000 rem)
• effective dose limit, continuous/frequent exposure, for the general public:

  1 mSv (100 mrem)
• effective dose limit, infrequent exposure, for the general public:

  5 mSv (500 mrem)
• equivalent dose limit of the lens of eye for the general public:

  15 mSv
• equivalent dose limit of the localized areas of the skin, hands, and feet for the general public:

  50 mSv
• effective dose of remedial action for natural sources, excluding radon, for the general public:

  >5 mSv (>500 mrem)
• exposure to radon and its decay products for the general public:

  >26 (J/s)m^3
• effective dose limit for education and training exposures annually:

  1 mSv (100 mrem)
• equivalent dose limit for annual education and training exposures to lens of eye:

  15 mSv
• equivalent dose limit for annual education and training exposures to localized areas of skin, hands, and feet:

  50 mSv
• monthly equivalent dose limit for embryo-fetus exposures:

  0.5 mSv
• equivalent dose limit for embryo-fetus exposures during the entire gestation period:

  5.0 mSv
• negligible individual dose annual limit:

  0.01 mSv (1 mrem)
• early and late tissue reactions have a high probability of occurring when entrance radiation doses exceed ________

  2 Gyt
• SID indicator must be accurate to within _________ of the actual SID

  2%
• the collimation beam and xray beam must coincide to within ________ of the SID

  2%
• the PBL must be accurate to within _________ of the SID

  2%
• all general purpose diagnostic xray beams must have a total filtration of at least _________ when operated above __________

  2.5 mm Al; above 70 kVp
• radiographic tubes operated between 50-70 kVp must have at least __________ of filtration

  1.5 mm Al
• below 50 kVp, a minimum of _________ of total filtration is required

  0.5 mm Al
• kilovoltage accuracy must be accurate within __________ of the control panel setting, which equates to about + or - _________ kV of the kV selected

  10%; + or - 5 kV
• variation in xray intensity should not exceed ________

  5%
• the maximum acceptable variation in linearity is ________ from one mA station to an adjacent mA station

  10%
• if the backup timer is controlled automatically, it should terminate at a maximum of ___________ when equipment is operated at or above ________

  600 mAs; 50 kVp
• backup time should be set at ________-________ of the expected exposure time

  150-200% (or 1.5 to 2 times)
• the annual nontherapeutic medical radiation dose to the US population in 2006 was _________ and decreased to _________ in 2016

  2.92mSv decreased to 2.16mSv
• lifetime effective dose of radiation workers must be limited to:

  individual's age in years times 10 mSv
• epidemiologic studies of atomic bomb survivors exposed in utero provided conclusive evidence of a dose dependent increase in the incidence of severe intellectual disability for fetal doses higher than approximately ________

  0.4 Sv
• the limit for any education and training exposures of individuals under the age of 18 years old is an EfD of ______ annually

  1 mSv
• the CumEfD for a 90 year old is:

  900 mSv
• 2 things that every diagnostic imaging system must have:

  protective tube housing

  correctly functioning control panel
• distance indicators must be accurate to within ________ of the SID

  2%