Outfield radiation dose determination by TLD-100 in the treatment of breast cancer using hypofractionated radiation therapy

• Published in: European physical journal plus 2023-10, Vol.138 (10), p.922, Article 922
• Main Authors: Kafadar, Vural E., Yegen, Ömer, Çifci, Şule Baz, Karslıoğlu, İhsan
• Format: Article
• Language: English
• Subjects: Applied and Technical Physics; Atomic; Breast cancer; Calibration; Cancer therapies; Complex Systems; Condensed Matter Physics; Dosimeters; Dosimetry; Esophagus; Mathematical and Computational Physics; Medical imaging; Medical research; Molecular; Nitrogen; Optical and Plasma Physics; Patients; Physics; Physics and Astronomy; Planning; Radiation dosage; Radiation therapy; Regular Article; Spinal cord; Theoretical; Thermoluminescence; Trachea
• ISSN: 2190-5444; 2190-5444
• DOI: 10.1140/epjp/s13360-023-04536-7

The purpose of the study was to use TLD-100 (LiF:Mg,Ti) thermoluminescence dosimetry to assess the outfield radiation dose received by a breast cancer patient during hypofractionated radiation therapy. The element correction factor system was used to assess the variability of the thermoluminescence dosimetry’s (TLD) responses. Sixteen TLD-100 chips were placed in nine specific areas in the Rando phantom for point doses in organs outside the treatment fields during breast cancer radiation treatment (260 cGy × 16 = 41.6 Gy in 16 fractions). The thermoluminescence signals were read out by a Harshaw QS-3500 manual type reader connected to a PC, where the readings were analyzed. The maximum dose values were received in the esophagus (≈3960 cGy) and trachea (≈3464 cGy). The TLD-100 chips can be used to calculate point doses in hypofractionated radiotherapy, making them very useful for ensuring accurate and precise treatment of patients.