{"id":1415,"date":"2010-06-24T15:26:40","date_gmt":"2010-06-24T19:26:40","guid":{"rendered":"https:\/\/www.bu.edu\/oehs\/?page_id=1415"},"modified":"2026-07-17T12:07:43","modified_gmt":"2026-07-17T16:07:43","slug":"dosimetry","status":"publish","type":"page","link":"https:\/\/www.bu.edu\/oehs\/radiation-safety\/home-page\/isotopes\/radiological-services\/dosimetry\/","title":{"rendered":"Dosimetry"},"content":{"rendered":"

As Radiation Safety facilitates and monitors all\u00a0radioactive materials and radiation generating device use\u00a0at Boston University and Boston Medical Center, exposure monitoring is a primary concern. As a\u00a0major component of\u00a0ensuring the safe work practices with radiation sources, Radiation Safety\u00a0distributes, surveys, and monitors all dosimetry to BU and BMC\u00a0employees.<\/p>\n

Dosimeters are passive exposure monitors distributed to individuals who are likely to receive 10% of their annual exposure limits or who otherwise request them. Please contact Radiation Safety<\/a> if you have any questions or concerns.<\/p>\n

Forms related to Dosimetry<\/h3>\n
Request a Dosimeter<\/h5>\n

To request a dosimeter, please fill out the Dosimetry Request form<\/a>.<\/p>\n

In addition, if you have worn a radiation dosimeter in the last 12 months, please complete indicate this on the Dosimetry Request form and fill out all required fields.\u00a0 In addition to this please complete and sign the Past Exposure History Release Statement<\/a> and return it to Radiation Safety via email<\/a> or fax (617-358-7686).<\/p>\n

Replacement Dosimeter Request<\/h5>\n

Fill out the replacement dosimeter request form.<\/a><\/p>\n

Pregnancy Declaration<\/h5>\n

To declare a pregnancy, which is done on a voluntary basis, please contact Radiation Safety by <\/span>email<\/a> or phone at 617-358-6177. A staff member will contact you regarding how to complete the Pregnancy Declaration Form<\/a>.<\/span><\/p>\n

Please note NRC Regulatory Guide 8.13 and 8.29 are also available for you to review.<\/p>\n

NRC Regulatory Guide 8.13:Instruction Concerning Prenatal Radiation Exposure<\/a>
\nNRC Regulatory Guide 8.29: Instruction Concerning Risks from Occupational Radiation Exposure<\/a><\/p>\n

If you have any questions regarding the Pregnancy Declaration Form<\/a> and or NRC Regulatory Guides you can contact Radiation Safety at 617-358-6177 during business hours (M-F 8 a.m. – 5 p.m.) or via email<\/a>.<\/p>\n

Dosimetry Information<\/h3>\n

Here is some helpful information in regards to wearing, syncing and interpreting the results of your dosimetry. This information is based on the dosimetry vendor’s technical specifications, as well as procedures established by DMPRS and the Radiation Safety Committee at Boston University and Boston Medical Center.<\/p>\n

Who needs to use dosimetry?<\/h5>
As prescribed by the Massachusetts Department of Public Health, 105 CMR 120.200, all individuals directly performing fluoroscopic procedures and any individual likely to receive 10% of the annual dose limit of 5000 mRem are required to receive dosimetry. The individuals likely to receive 10% of the limit are determined by Radiation Safety through an extensive review process. The “Dosimetry Requirement Decision Tree” is a helpful tool for any individual unsure if they should have dosimetry.<\/p>\n

\"DDT\"<\/p>\n

Please complete the Request for Personnel Monitoring Dosimetry Request form<\/a> online.<\/div>\n<\/div>\n\n

What does my dosimetry do?<\/h5>
Dosimetry is used to determine the cumulative exposure over a wear period, not mitigate it. A dosimeter cannot perform its function if it is not worn or not returned. After being returned, the dosimetry is shipped out to the vendor for processing and measurement. This process takes several weeks and the results of these measurements will be sent electronically to the departmental contact for each series code, usually during the first week of the month.<\/div>\n<\/div>\n\n
How do I wear my dosimetry?<\/h5>

\nThere are several different wear configurations established by DMPRS to accurately measure the dose to an individual. These configurations are vital for accurate measurements and compensate for artificially inflated or lowered values. Please reference the wear chart for detailed information in regards to this matter.
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How do I sync my electronic dosimeter?<\/h5>

\nYour Mirion Instadose+ Dosimeters are designed to stay with you throughout the duration of your employment at BU and\/or BMC, and should only be used while performing work as part of your employment. If you work with radiation\/radioactive material at another institution, do not use your BU\/BMC issued dosimeter there.<\/strong><\/p>\n