In vivo dosimetry for testicular and scalp shielding in total skin electron therapy using a radiophotoluminescence glass dosimeter
| Autor: | Kae Okuma, Hiroshi Igaki, Ako Aikawa, Takahito Chiba, Tetsu Nakaichi, Hiroki Nakayama, Satoshi Nakamura, Mihiro Takemori, Shouichi Katsuta, Kotaro Iijima, Kyohei Fujii, Shohei Mikasa, Hiroyuki Okamoto |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Adult
Male Electron therapy Health Toxicology and Mutagenesis medicine.medical_treatment Beam spoiler Electrons In Vivo Dosimetry Testis medicine Humans Radiology Nuclear Medicine and imaging Fundamental Radiation Science Mycosis fungoides Radiation Dosimeter Scalp total skin electron therapy (TSET) business.industry Radiation Dosimeters medicine.disease mycosis fungoides (MF) Radiation therapy radiophotoluminescence glass dosimeter (RPLD) Hair loss medicine.anatomical_structure Electromagnetic shielding AcademicSubjects/SCI00960 AcademicSubjects/MED00870 business Nuclear medicine |
| Zdroj: | Journal of Radiation Research |
| ISSN: | 1349-9157 |
| Popis: | Mycosis fungoides (MF) is a common, low-grade non-Hodgkin’s lymphoma of skin-homing T lymphocytes that can be treated via skin-directed radiotherapy. Our institution has implemented total skin electron therapy (TSET) with a 4.3 m source-to-surface distance (SSD) and 6 MeV electron beams with a beam spoiler. A 35-year-old male undergoing TSET desired to avoid radiotherapy-induced hair loss and temporary infertility; therefore, leakage dose to scalp and testicles was reduced with a special radiation shield composed of stacked lead sheets. The shields for the scalp and scrotal were of 3 mm and 6 mm, respectively. To assess leakage doses, a radiophotoluminescence glass dosimeter (RPLD) was placed at every fraction. The difference dose between the measured and prescribed dose at the calibration point was 2%. The top of the head and scrotal surface exhibited 18 cGy and 10 cGy, respectively. Thus, the dose to the scrotal surface was not beyond the testicular tolerance dose of 20 cGy. Results of semen analysis two months postradiotherapy were normal. There was no hair loss during or after radiation therapy. Therefore, the RPLD is a useful in vivo dosimeter that provides technical information on radiation shielding to allow for completion of TSET without hair loss or temporary infertility. |
| Databáze: | OpenAIRE |
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