Dosimetry
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Dosimetry is the detection and measurement of radiation on personnel badges.
The Radiation Safety Office coordinates dosimetry for all OHSU employees.
There are several types of badges available at OHSU; depending on where one is working, what type of radiation will be encountered and positioning on one's body.
To obtain dosimetry, please complete the following: Dosimeter Request Form
Email this document to:
Central Campus Radiation Safety Office (or) West Campus Radiation Safety Office
NOTE: If you change labs or departments, leave OHSU, stop working with radiation, or if there is a change in the badge contact, please notify the Radiation Safety Office as soon as possible.
Central Campus Radiation Safety Office (or) West Campus Radiation Safety Office
503-494-7795 503-690-5390
Badge Requirements:
Research users:
Ring badge is required:
- when using any amount of 32P or
- if extremity exposure could exceed 6000 mRem / quarter or
- if using any pure beta emitter with energy > 66 keV
A torso badge is required if whole body exposure could exceed 600 mRem / quarter.
NOTE: Anyone who requests a badge will be issued one.
Clinical users:
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Physicians who use fluoroscopy must have torso and collar badges.
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Other fluoroscopy users must have collar badges.
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Non-physician personnel who operate x-ray equipment AND who wear lead/equivalent aprons, must wear at least a collar badge.
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Personnel handling radioactive materials must have ring badges.
NOTE: Anyone who requests a badge will be issued one.
Proper wearing of badges:
Ring badges:
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Worn under gloves to prevent contaminating the ring.
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Worn on the hand that will be closest to the radioactive material.
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Worn so that the barcode is facing the palm of your hand (since the detection chip is located underneath the barcode area).
Torso badges:
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Worn on torso with label facing out.
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Clinical personnel wear torso badges under lead aprons, if worn.
Collar badges:
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Worn at the neck; outside lead shielding. Only authorized for clinical personnel.
Proper badge storage:
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Store away from any radiation sources or waste.
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Store in a dry place (usually stored in desk).
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Store badges away from heat and light.
Exposure Reports:
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RSO maintains copies of all exposure history.
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This information is provided for clinical users and upon request for research users.
PREGNANT WORKER POLICY
For information about the pregnant worker policy:
Instruction Concerning Prenatal Radiation Exposure (.pdf)
To declare your pregancy in writing to the Radiation Safety Office:
