Acronyms
ALARA
as low as reasonably achievable
does not require lead sheilding
mammography
basic annual dose limit
50 mSv/yr
most important aspects of radiation control
time distance shielding
uses low kvp
mammography
TLDs
thermoluminescence dosimeter
exposure cord must be at least
6 ft
dose limit during pregnancy
5 mSv
TLD occupational radiation monitors can be worn for
for intervals up to a year
real time dynamic viewing of anatomic structures
fluoroscopy
NCRP
national council on radiation protection and measurements
dose limit for students
20 mSv/yr
for mobile radiology the occupational exposures rarely exceed
5 mSv/yr
3 types of personnel monitors
film badge, TLDs, and OSLs
establishes dose limits
NCRP
MPD
maximum possible dose
the relationship current dose limits are based on
LNT
occupational radiation exposure usually does not exceed
1 mSv/yr
extremity monitors should be worn on
wrist or fingers
highest occupational exposure
fluoroscopy and mobile
Wt
tissue weight factor
which is more sensitive... TLDs or OSLs
OSL
dose limit for eyes
150 mSv/yr
normal thickness of lead in protective sheilding
0.5 mm
true or false: ultrasound radiologists normally are not classified as radiation workers
true