Dosimetry

As Radiation Safety facilitates and monitors all radioactive materials and radiation generating device use at Boston University and Boston Medical Center, exposure monitoring is a primary concern. As a major component of ensuring the safe work practices with radiation sources, Radiation Safety distributes, surveys, and monitors all dosimetry to BU, BUMC, and BMC employees.

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 if you have any questions or concerns.

Forms related to Dosimetry

Request a Dosimeter

To request a dosimetry, please fill out the Dosimetry Request form

Replacement Dosimeter Request

Fill out the replacement dosimeter request form.

Pregnancy Declaration

To declare a pregnancy, which is on a voluntary basis, please download and fill out the Pregnancy Declaration Form and forward to Radiation Safety via fax 617-638-7509, email, or in person.

Please note NRC Regulatory Guide 8.13 and 8.29 are also available for you to review.

NRC Regulatory Guide 8.13
NRC Regulatory Guide 8.29

If you have any questions regarding the Pregnancy Declaration Form and or NRC Regulatory Guides you can contact Radiation Safety at 617-638-7052 during business hours (M-F 8 a.m. – 5 p.m.) or via email.

Dosimetry Information

Here is some helpful information in regards to using, exchanging and interpreting the results of your dosimetry. This information is based on the manufacturer’s (Landauer) technical specifications, as well as procedures established by DMPRS and the Radiation Safety Committee at Boston University and Boston Medical Center.


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.

DDT

Please complete the Request for Personnel Monitoring Dosimetry Request form online.


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. Technical sheets of your dosimetry can be found here.


There 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.


Dosimetry should be returned to the dosimetry coordinator of the department on either a monthly or quarterly rotation. This rotation is detailed on the front of the dosimeter under the participant’s name. An exchange should only be done after a replacement dosimeter has been received. If a replacement is not received when the wear period has expired please contact your coordinator or DMPRS as soon as possible; continue to use your old dosimetry until a replacement is procured.

Radiation Safety reviews all dosimetry reports to ensure complete regulatory compliance and to ensure the utmost accuracy of reporting. All dosimetric data is reviewed for fidelity and accuracy within expected threshold for each series code. Any variance in measurements prompts a review and follow up actions. DMPRS seeks to ensure that the concept of ALARA (As Low As Reasonably Achievable) is adhered to with the utmost priority. To promulgate this agenda, DMPRS has established annual thresh holds of 10% and 30% of the established State and Federal annual limits. Any time these thresh holds are exceeded an investigation is initiated and the incident is reported to the Radiation Safety Committee.

Please refer to the Landauer Service Guide, pages 13-17, for a report interpretation walk through.

Instructions for Access to Landauer Individual Dose Report Page

Radiation Safety is happy to announce that dosimetry participants will now be able to access their own dose records on Landauer’s user management web site MyLDR.

Please follow the instructions below to access your records.

  1. Click the following link or type it into your web browser: https://www.myldr.com/WebSelfService/
    You will see the page below:
    myldr sign in
  2. Enter the following username and password (this is a universal sign-in to access the Individual Dose Report page).Username: BUMCDosimetryPassword: Dosimetry1Please note: The password and username are case sensitive.
  3. After signing in, you will be redirected a page entitled Landauer Individual Dose Report.
    IDR page
  4. To access your records, enter the Account Number and Badge Serial Number. The account number is 188802. The serial number is a unique six-digit and two-letter sequence (ex. 123456SB) that can be found on your ring badge or the back of your individual dosimetry badge. The IDR access page provides a useful photo key to help you identify where the serial number can be found on your individual badge.Please note: Serial numbers are individually assigned and are intended to be confidential. Sharing them is prohibited. Any person found to be inappropriately accessing an individual’s dose record or sharing serial numbers will be contacted by Radiation Safety.
  5. Upon submitting your account number and serial number, readings for the most recent badge submission, a YTD dose for the current calendar year and previous year, and a Lifetime dose will appear in the lower half of the page.
  6. For access to other dose history records not included, please contact dosimetry coordinator by email at kurk@bu.edu or phone at 617-638-7052.