Whole-body counting

Not to be confused with Body count.

In health physics, whole-body counting is the measurement used in internal dosimetry, the measurement of radioactivity within the body. The technique is primarily applicable to radioactive material that emits gamma rays. Alpha particle decays can also be detected indirectly by their coincident gamma radiation. In certain circumstances, beta emitters can also be measured, but with degraded sensitivity. The instrument used for whole-body counting is referred to as a whole-body counter. In contrast, a whole-body monitor is a device used in radiation protection to check for a person's body external contamination when leaving a radiation controlled area.

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