This information is used for your permanent dosimetry records.
External dosimetry is inefficient for monitoring laboratory personnel.
No external monitoring is required for personnel using only radionuclides that produce low-energy radiations. External monitoring is effective for high-activity protocols only. If you are using less than 10 mCi per protocol, personnel monitoring is generally not needed. Laboratories utilizing less than 5 mCi are not required to use personnel monitoring. Clinics or laboratories performing x-ray fluoroscopy must wear a collar film badge and protective lead apron.