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RADIATION SAFETY ASPECTS OF <sup>90</sup>Y BREMSSTRAHLUNG RADIATION PRODUCED FROM RADIATION SHIELDING APPARATUS USING THE MONTE CARLO SIMULATION

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dc.contributor.authorChayanit Jumpeeen_US
dc.contributor.authorChanakarn Onnomdeeen_US
dc.contributor.authorPutthiporn Charoenphunen_US
dc.contributor.authorPhiphat Phruksarojanakunen_US
dc.contributor.authorKrisanat Chuamsaamarkkeeen_US
dc.contributor.otherFaculty of Medicine Ramathibodi Hospital, Mahidol Universityen_US
dc.contributor.otherMinistry of Higher Education, Science, Research and Innovationen_US
dc.contributor.otherChiang Mai Universityen_US
dc.date.accessioned2022-08-04T08:33:34Z
dc.date.available2022-08-04T08:33:34Z
dc.date.issued2021-09-01en_US
dc.description.abstractSelective internal radiation therapy using an 90 Y labelled microsphere is increasingly used to treat hepatocellular carcinoma. Based on its properties,90Y can produce bremsstrahlung radiation which is essential for post-treatment localisation and dosimetry. However, bremsstrah-lung radiation could lead to an increase of radiation exposure of radiation workers. The aim of this work was to determine the90Y bremsstrahlung radiation produced from the polymethyl methacrylate radiation shielding apparatus using the Monte Carlo simulation. A scintillation detector with a 137 Cs standard source was used to validate the Monte Carlo simu-lation. After validation, the 90 Y bremsstrahlung photons spectrum produced from the radiation shielding apparatus was simulated. The radiation equivalent dose rates to the head, neck, body, lower extremities at a distance of 30 centimeters, and finger (contact with the knob) were estimated to be 4.9 ± 0.6, 6.2 ± 0.1, 18.9 ± 0.4, 13.1 ± 0.6, and 3900 ± 50 µSvh–1, respec-tively. The corresponding annual doses exceeded the limit when radiation workers performed 2631, 1563, 769, and 515 cases per year with contact the knob 3, 5, 10, and 15 minutes per case, respectively. The simulation result showed that radiation exposure of radiation workers and the number of selective internal radiation therapy procedures performed should be considered.en_US
dc.identifier.citationNuclear Technology and Radiation Protection. Vol.36, No.3 (2021), 255-260en_US
dc.identifier.doi10.2298/NTRP2103255Jen_US
dc.identifier.issn14513994en_US
dc.identifier.other2-s2.0-85125468241en_US
dc.identifier.urihttps://repository.li.mahidol.ac.th/handle/123456789/76896
dc.rightsMahidol Universityen_US
dc.rights.holderSCOPUSen_US
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85125468241&origin=inwarden_US
dc.subjectEnergyen_US
dc.subjectEngineeringen_US
dc.titleRADIATION SAFETY ASPECTS OF <sup>90</sup>Y BREMSSTRAHLUNG RADIATION PRODUCED FROM RADIATION SHIELDING APPARATUS USING THE MONTE CARLO SIMULATIONen_US
dc.typeArticleen_US
dspace.entity.typePublication
mu.datasource.scopushttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85125468241&origin=inwarden_US
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