Radiation Protection. Bushong Ch. 37, 39 & 40. Units of Measurement NCRP ALARA DOSE – Cumulative Annual Patients Fetus. Entrance Skin Exposure Skin erythema dose Genetically significant dose. Objectives. Objectives. Radiation units of measurements QF – Quality Factor
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Bushong Ch. 37, 39 & 40
100 R = 1 C/kg
1Rad = 1/100 Gray
1 Rem = .01 Sievert
(Rad + QF = REM)
1 REM = 10 mSv
1 Rem = 1000mRem
BUT NOT TO EXCEED 1.25 REM/QUARTER
Under 5 rad – negligible risk
Risk increases above 15 rad
Recommend abortion (spontaneous) 25 rad
(“Baby exposure” approx 1/1000 of ESE)
occupational worker (5 rem)
Skin burns from 30 min of beam on time
TECHNOLOGIST . 25 mm LEAD
. 5 mm LEAD
AT 1 METER DISTANCE -
ABOVE AND BELOW THE TABLE TUBE EXPOSURE TO TECH
DURING FLUOROSCOPY THE TECHNOLOGIST SHOULD REMAIN AS FAR FROM THE PATIENT AS PRACTICLE
ALWAYS WEAR YOUR LEAD APRON & THYROID SHIELD DURING FLUOROSCOPY!
GOT A THYROID SHIELD?