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Updated: May 19, 2026
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Characterization of Recombination Effects in a Liquid Ionization Chamber Used for the Dosimetry of a Radiosurgical Accelerator
Published on: May 9, 2014
Solid state TL detectors for in vivo dosimetry in brachytherapy
G Gambarini1, M Borroni, S Grisotto
1Physics Department of the Università degli Studi, Milan, Italy. Grazia.gambarini@mi.infn.it
Summary
This study demonstrates the feasibility of in vivo rectal dosimetry using thermoluminescence detectors (TLDs) during prostate cancer brachytherapy. The method accurately measures delivered radiation doses, enhancing treatment quality assurance.
Area of Science:
- Medical Physics
- Radiation Oncology
Background:
- In vivo dosimetry is crucial for radiotherapy quality assurance, verifying patient dose delivery.
- High dose rate brachytherapy boosts are used for prostate cancer treatment.
Purpose of the Study:
- To assess the feasibility of in vivo rectal dosimetry during prostate cancer brachytherapy.
- To evaluate the accuracy of thermoluminescence detectors (TLDs) placed on transrectal ultrasound probes.
Main Methods:
- Developed a calibration protocol for TLDs.
- Performed in vivo rectal dosimetry using TLDs on transrectal ultrasound probes during treatment.
- Compared measured doses with calculated doses.
Main Results:
- Established a suitable TLD calibration protocol.
- In vivo measurements showed good agreement with calculated radiation doses.
- The proposed method proved to be feasible and accurate.
Conclusions:
- In vivo rectal dosimetry using TLDs on transrectal ultrasound probes is a feasible method for prostate cancer brachytherapy.
- This technique provides accurate patient dose information for quality assurance.
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