Estimated radiation doses to ovarian and uterine organs in breast cancer irradiation using radio‐photoluminescent glass dosimeters (RPLDs)

Autor: Sivalee Suriyapee, Chulee Vannavijit, Puntiwa Oonsiri, Kitwadee Saksornchai, Mananchaya Wimolnoch
Jazyk: angličtina
Rok vydání: 2021
Předmět:
medicine.medical_treatment
Uterus
ovarian dose
R895-920
Breast Neoplasms
Ovary
Radiation Dosage
Imaging phantom
030218 nuclear medicine & medical imaging
law.invention
03 medical and health sciences
Medical physics. Medical radiology. Nuclear medicine
0302 clinical medicine
Breast cancer
law
medicine
Humans
Radiology
Nuclear Medicine and imaging
Irradiation
out‐of‐field radiation
radio‐photoluminescent glass dosimeters (RPLDs)
Dosimeter
Radiological and Ultrasound Technology
Radiation Dosimeters
business.industry
Radiotherapy Planning
Computer-Assisted
Radiotherapy Dosage
Collimator
Left‐side breast irradiation
Original Articles
medicine.disease
Radiation therapy
medicine.anatomical_structure
030220 oncology & carcinogenesis
Original Article
Female
Radiotherapy
Intensity-Modulated
Nuclear medicine
business
Zdroj: Journal of Medical Radiation Sciences, Vol 68, Iss 2, Pp 167-174 (2021)
Journal of Medical Radiation Sciences
ISSN: 2051-3895
2051-3909
Popis: Introduction The well‐being of breast cancer patients is essential, especially fertility in patients of reproductive age. The objective of this study was to estimate the radiation doses to the ovaries and uterus for different treatment techniques of breast cancer irradiation using radio‐photoluminescent glass dosimeters (RPLDs). Methods A Farmer‐type ionisation chamber (IBA FC‐65G) and RPLDs were used to measure in‐ and out‐of‐field radiation doses in a solid water phantom. The field sizes were set to 10 × 10 cm2 and 8 × 17 cm2 with the central axis at out‐of‐field measurement distances of 30 or 50 cm. The Rando phantom’s left breast was planned using four different techniques: two tangential standard fields with and without electronic tissue compensator (E‐comp) techniques, intensity‐modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT). The radiation doses in the ipsilateral ovary, contralateral ovary and uterus were measured using RPLDs. Results The percentage ratio of out of field to in field was affected by distance from the central axis to the point of measurement, in addition to the field sizes associated with collimator scatter. Advanced techniques such as IMRT and VMAT produced higher doses to the ovaries and uterus. The estimated results of the worst‐case scenario for the ipsilateral ovary, contralateral ovary and uterus were 0.84% (42 cGy), 0.62% (31 cGy) and 0.76% (38 cGy), respectively, for a 5000 cGy prescription dose. Conclusion The lowest to highest out‐of‐field radiation doses to the ovarian and uterine organs from breast irradiation were the two tangential field techniques, VMAT and IMRT. These advanced techniques yielded higher radiation leakage, which potentially contributed to the out‐of‐field radiation dose.
The ovarian and uterine radiation dose in breast cancer irradiation was measured by using the radio‐photoluminescent glass dosimeters (RPLDs). The estimated results of the worst‐case scenario for ipsilateral ovary, contralateral ovary and uterus were 42 cGy, 31 cGy and 38 cGy of 50 Gy prescription dose of patient’s VMAT plans, respectively.
Databáze: OpenAIRE
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