Table VI
Common means of exposure to radiation
Exposure
Source
Directed to the specific body region
Scattered to the
whole body (dose per use)
Routine chest X-ray#
0.05 to 2.0 r/exposure
Fluoroscopic examination?
10 to 20 r/min
Cinefluorography?
25 r per examination
Dental X-rays
10 to 150 r per whole-
0.0ltolr
Shoe store fluoroscopy: > shoe -fitting
unit
50 to 150 r/min to feet
1 to 10 r/min
Radium-dial watch? 1uC/watch
7.0 r/yr to the wrist
0.01 r/year
1/200 to 1/1000 of local dose
“?@E7
mouth series
Radium and X-ray? >» 4 technicians
0.1 to 0. 3 r/week
AEC maximum permissible dose for
20 years' exposure
15 r/yr at 0.3 r/week
Average accumulated exposure of
10 most highly exposed individuals
0.1 r /week
(throughout the world)
over 5-year period—U.C. Radiation
Laboratory®
5to 15 r/yr
5 r/yr
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