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Ramezani Farkhani, R, Gholamhosseinian, H, Anvari, K, Forghani, M N. (1399). Assessment of Thyroid Lobe Dose in Breast Cancer Intraoperative Radiotherapy. سامانه مدیریت نشریات علمی, 11(1), 55-60. doi: 10.31661/jbpe.v0i0.2001-1046
R Ramezani Farkhani; H Gholamhosseinian; K Anvari; M N Forghani. "Assessment of Thyroid Lobe Dose in Breast Cancer Intraoperative Radiotherapy". سامانه مدیریت نشریات علمی, 11, 1, 1399, 55-60. doi: 10.31661/jbpe.v0i0.2001-1046
Ramezani Farkhani, R, Gholamhosseinian, H, Anvari, K, Forghani, M N. (1399). 'Assessment of Thyroid Lobe Dose in Breast Cancer Intraoperative Radiotherapy', سامانه مدیریت نشریات علمی, 11(1), pp. 55-60. doi: 10.31661/jbpe.v0i0.2001-1046
Ramezani Farkhani, R, Gholamhosseinian, H, Anvari, K, Forghani, M N. Assessment of Thyroid Lobe Dose in Breast Cancer Intraoperative Radiotherapy. سامانه مدیریت نشریات علمی, 1399; 11(1): 55-60. doi: 10.31661/jbpe.v0i0.2001-1046

Assessment of Thyroid Lobe Dose in Breast Cancer Intraoperative Radiotherapy

Journal of Biomedical Physics and Engineering
مقاله 7، دوره 11، شماره 1، اردیبهشت 2021، صفحه 55-60    اصل مقاله (1.1 M)
نوع مقاله: Original Research
شناسه دیجیتال (DOI): 10.31661/jbpe.v0i0.2001-1046
نویسندگان
R Ramezani Farkhani1؛ H Gholamhosseinian* 2؛ K Anvari3؛ M N Forghani4
1MSc, Department of Medical Physics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
2PhD, Department of Medical Physics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
3MD, Department of Radiotherapy & Oncology, Omid Hospital, Mashhad University of Medical Sciences, Mashhad, Iran
4MD, Department of General Surgery, Mashhad University of Medical Sciences, Mashhad, Iran
چکیده
Background: Breast cancer is the most common cancer among women. Considering the fact that a high dose is delivered in a single fraction of IORT, the evaluation of the dose at sensitive organs like thyroid is necessary.
Objective: The current study has aimed to evaluate the received dose to thyroid lobes in the breast IORT technique.
Material and Methods: A total of 49 women with breast cancer undergoing IORT were enrolled in this cross-sectional study with census sampling. Immediately after tumor resection, a single dose of 20 Gray at the applicator surface was delivered using 50KV X-ray by an Intrabeam machine. The thyroid dose was detected using thermoluminescent detectors (TLD) 100 at the mid-thyroid line, left and right lobes.
Results: The dose at the right and left lobes of the thyroid gland as well as the mid-thyroid line was found to be 40.18±35.44 mGy, 35.50±27.32 mGy, and 40.61±32.47 mGy, respectively. The right lobe received a significantly higher absorbed dose compared to the left lobe when the right breast was under IORT treatment. The same trend was seen with the left lobe and left breast under IORT treatment (P=0.0001 and P=0.018, respectively). The applicator size showed non-significant effects on the absorbed dose at the thyroid gland. Also, the applicator depth had a non-significant inverse effect on thyroid dose.
Conclusion: According to our findings, the absorbed dose at each thyroid lobe depends on the under-treatment side as well as the applicator size and depth (applicator upper surface distance from the skin).
کلیدواژه‌ها
Breast Cancer؛ Intraoperative Radiotherapy؛ Thyroid؛ Radiotherapy Dosage؛ Thermoluminescent Dosimetry
مراجع
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