a. Low-energy
beta- and x-ray emitters ( 3 H, 14 C, 35 S, 33
P, 45 Ca, 63 Ni, 99 Tc and 125 I): External dosimetry is
inefficient for monitoring laboratory personnel. No
external monitoring is required for personnel using only
radionuclides that produce low-energy radiations.
b. Medium
to high-energy beta emitters ( 32 P, 36 Cl). External
monitoring is effective for high-activity protocols only.
Therefore, laboratories utilizing > 10 mCi of high-energy
beta-emitters (e.g. phosphorylations) should use external
dosimetry. If you are using less than 10 mCi per protocol,
personnel monitoring is generally not needed.
c. Medium
to high-energy gamma emitters ( 86 Rb, 22 Na, 51
Cr, 131 I): External monitoring is effective for high-activity
protocols. Therefore, laboratories utilizing >5
mCi per protocol of medium-energy gamma-emitters should
use external dosimetry. Laboratories utilizing less than
5 mCi are not required to use personnel monitoring.
d. X -ray
fluoroscopy: Clinics or laboratories performing
x-ray fluoroscopy must wear a collar film badge and protective
lead apron.
e. Positron Diagnostic
Research Center: Personnel using high activity
positron emitters (>5 mCi per protocol or injection)
are required to use personnel monitoring
f. Environmental
Health and Safety: Personnel working within
Environmental Health and Safety are required to use personnel
monitoring.
g. Voluntarily
Declared Pregnant Worker: Personnel who
are voluntarily declared pregnant workers may be issued an
additional abdomen dosimeter for the duration of the pregnancy.
h. Administratively
badged whole body: Personnel who are not
required using the above criteria can be administratively
badged. You will be issued a quarterly whole body
badge.
i. Administratively
badged extremity: Personnel who are not
required using the above criteria can be administratively
badged. You will be issued a quarterly extremity
monitor (e.g. TLD ring).