Preliminary investigation of PAGAT polymer gel radionuclide dosimetry of Tc-99m

Kelly Braun, Dale Bailey, Brendan Hill, Clive Baldock

Research output: Contribution to journalConference paperpeer-review

11 Citations (Scopus)


PAGAT polymer gel was investigated as a suitable dosimeter materials for measuring absorbed dose from the unsealed source radionuclide Tc-99m. Differing amounts of Tc-99m over the range of 25-5000 MBq were introduced into a normoxic polymer gel mixture (PAGAT) in sealed nitrogen-filled P6 glass vials. After irradiation the gels were evaluated using MRI more than 48 hours after preparation to allow for radioactive decay. The dose delivered to the vial was also calculated empirically. R2 versus total activity curves were obtained over a number of experiments and these were used to evaluate the relationship between the amount of gel polymerization and the dose deposited by the radionuclide. A linear response up to 1000 MBq (corresponding to 20Gy) was displayed and was still behaving monotonically at 5000 MBq. Polymer gels offer the potential to measure radiation dose three-dimensionally using MRI.
Original languageEnglish
Pages (from-to)012050-1-012050-5
Number of pages5
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2009
Externally publishedYes
EventInternational Conference on Radiotherapy Gel Dosimetry (5th : 2008) - Hersonissos, Crete Greece
Duration: 29 Sep 20083 Oct 2008


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