What question did this study set out to answer?

This research aims to evaluate the accuracy of urethral dose measurements using MOSFET detectors compared to TPS-calculated doses during interstitial brachytherapy.

March 10, 2026Asian Pacific Journal of Cancer Prevention0 citationsOpen Access

Analysis of In-Vivo Dose Measurement of Urethra Using Array MOSFET Detectors and TPS-Calculated Dose in High-Dose-Rate Interstitial Brachytherapy in Gynaecological Malignancies

NSN. John SushmaKidwai Memorial Institute of Oncology TRTanvir Pasha C RKidwai Memorial Institute of Oncology NSNirupama Y SKidwai Memorial Institute of Oncology

Key Points

This research aims to evaluate the accuracy of urethral dose measurements using MOSFET detectors compared to TPS-calculated doses during interstitial brachytherapy.
Used an array of MOSFET detectors for measuring urethral doses in patients.
Compared measured doses with doses calculated by the Treatment Planning System (TPS).
Analyzed correlation between MOSFET-measured and TPS-calculated doses.
Found a good correlation between MOSFET-measured doses and TPS-calculated doses.
P-value greater than 0.05 indicates statistical significance in the correlation.

Abstract

The urethral doses calculated by the Treatment Planning System (TPS) were comparable to the doses measured by the MOSFET detector. Urethral dose measurement using an array of MOSFET detectors in patients treated with the Interstitial Brachytherapy (ISBT) technique proved its suitability and ease for measuring urethral dose. A good correlation was observed between the MOSFET-measured dose and the TPS-calculated dose, with a P-value > 0.05.

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