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DOE-HDBK-1109-97
Radiological Safety Training for Radiation-Producing (X-Ray) Devices
Instructor=s Guide
Lesson Plan
Instructor=s Notes
contracting fatal cancer without consideration of a
threshold for effects. This conservative assumption
is sometimes called the "linear no threshold"
relationship of health effects to dose.
iii. Energy of the Radiation.
The energy of X-rays can vary from less than 1 keV
up to more than 10 MeV. The higher the energy of
the X-ray, the more penetrating it will be into body
tissue.
Lower energy X-rays are largely absorbed in the
skin. They can cause a significant skin dose but
may contribute little dose to the whole body
(depending on energy).
iv. Area of the Body Exposed.
Just as a burn to a large portion of the body is more
damaging than a burn confined to a smaller area, so
also is a radiation dose to the whole body more
damaging than a dose to only a small area. In
addition, the larger the area, the more difficult it is
for the body to repair the damage.
v. Individual Sensitivity.
Some individuals are more sensitive to radiation
than others. Age, gender, and overall health can
have an effect on how the body responds to
radiation exposure.
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