In health physics,<unk>  refers to the measurement of radioactivity within the human<unk> . 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 be measured, but with degraded sensitivity. The instrument used is normally referred to as a<unk> <unk>  counter. This must not be confused with a<unk> <unk>  monitor" which used for personnel exit monitoring, which is the term used in radiation protection for checking for external contamination of a<unk> <unk>  of a person leaving a radioactive contamination controlled area.
Whole-body counting
Hyperoxia test
Gaseous detection device
Multiple inert gas elimination technique
Carbon monoxide detector
CO-oximeter
Pulse oximetry
Respiratory pressure meter