| Autor: |
Nguyen Thi, Phuong Thao, Pedro Arce, Dubois, Nguyen Thien, Trung, Khoa Anh, Nguyen Vo, Nguyen Khanh, Duy, Nguyen Dong, Son |
| Rok vydání: |
2020 |
| Zdroj: |
Journal of radiological protection : official journal of the Society for Radiological Protection. |
| ISSN: |
1361-6498 |
| Popis: |
A dose calculation for a person who has been in in contact with a patient undergoing Nuclear medicine procedure can be performed by Merged Phantom Tool (MPT). In this study, we are upgrading the MPT to help users easily merge phantoms at any axis, with any angle using the "vector rotation" technique. The segmented structure information of the contact's phantom is also included in the calculation using the GEANT4 "parallel geometry" utility. The calculation is applied to the case of a male cancer patient who used I-131 lying on a bed, and a male caregiver standing beside the patient. The equivalent dose rate to the thyroid of the caregiver is calculated at 0.3, 0.5, 0.8 and 1m away from the patient, when the caregiver is standing near the patient's abdomen, chest and neck area. The results show that the dose rate to the thyroid of the male contact greatly depends on his standing position and there are clear differences between the results calculated with the point source and those calculated with the patient source. In summary, using activity distributions in the patient's body as well as the right communication circumstance helps to calculate the optimal dose for people who has been in contact with patients. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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