ArticleJournal of contemporary brachytherapy2025
Assessment of rectal dose with thermoluminescent in vivo dosimetry in high-dose-rate cobalt-60 intracavitary brachytherapy for cervical cancer: A two-arm cohort study using orthogonal images planning.
Article in Journal of contemporary brachytherapy, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Purpose: High-dose-rate intracavitary brachytherapy delivers high radiation doses to tumors while minimizing exposure to surrounding normal cells. However, inappropriate administration can lead to radiation-induced toxicity by overdosing organs at risk. This study evaluated and compared the rectum doses planned by treatment planning system and measured using a thermoluminescent dosimeter. Material and methods: Thermoluminescent dosimeters (TLD) were employed to measure radiation dose to the rectum across two patient groups: one treated using first fraction-based planning (FFP), and the other with each fraction planned individually (EFP). Results: The mean dose measured by TLD (3.99 ±1.63 Gy) was higher than the mean dose planned by TPS (3.23 ±1.16 Gy, Conclusions: For patients transferred from a brachytherapy couch to a hospital stretcher during applicator insertion and dose delivery, first fraction-based planning is feasible. However, caution is needed to minimize applicator shifts, as these changes can alter the geometric position between fractions.
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