ADDING TWO NEW CONTACT CIRCUMSTANCES TO ‘MERGED PHANTOM TOOL’ AND A TECHNIQUE TO CONVERT STRUCTURE INFORMATION SEGMENTED BY THE CARIMAS SOFTWARE INTO GEANT4 GEOMETRY

Two new contact circumstances called ‘stand-lie’ and ‘front–rear’ are implemented to the merged phantom tool. To allow more flexibility for users when they calculate the dose for a volume of interest (VOI) with arbitrary geometry, an optional utility to convert segmented structure information from t...

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Bibliographic Details
Published in:Radiation protection dosimetry 2020-10, Vol.190 (4), p.412-418
Main Authors: Thao, Nguyen Thi Phuong, Trung, Nguyen Thien, Duy, Nguyen Khanh, Danh, Nguyen Thanh, Anh, Pham Tien, Son, Nguyen Dong
Format: Article
Language:English
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Summary:Two new contact circumstances called ‘stand-lie’ and ‘front–rear’ are implemented to the merged phantom tool. To allow more flexibility for users when they calculate the dose for a volume of interest (VOI) with arbitrary geometry, an optional utility to convert segmented structure information from the CARIMAS software into parallel geometry of GEANT4 is provided. The effective dose for a person who has been in contact with a male patient being treated for thyroid cancer with 131I is calculated for four circumstances: opposite, side by side, stand-lie and front–rear. The biggest dose is the ‘opposite’ circumstance and the smallest one is the ‘stand-lie’ circumstance. Using the dose distribution in the patient’s body and applying the right circumstance should be done to optimise the dose calculation for the contact person.
ISSN:0144-8420
1742-3406
DOI:10.1093/rpd/ncaa117