Chinese Journal of Radiological Health 2023;32(3):259-263

doi:10.13491/j.issn.1004-714X.2023.03.008

Development of a simplified phantom for calibration of whole-body counter

Jianhua WU 1 ; Hongchao PANG 1 ; Zhiping LUO 1 ; Yang LIU 1 ; Xinglong LI 1 ; Guojun YUAN 1

Affiliations

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Keywords

Whole-body counter; BOMAB; Simplified phantom; Monte Carlo; Calibration

Country

China

Language

Chinese

Abstract

Objective To develop a simplified phantom for the calibration of whole-body counters. Methods A simplified phantom design method for the calibration of whole-body counters was established based on the process and method of calibrating whole-body counters. By using the established method and Monte Carlo method, a simplified phantom including the total body, thyroid, lungs, and gastrointestinal tract was designed to calibrate the ORTEC-Stand FAST II whole-body counter. The simplified phantom was compared with the BOMAB phantom through experimental measurements. Results Within the range of 50 keV to 2 MeV, for rays of the same energy in the same organ of the simplified phantom and BOMAB phantom, the simulated data of detection efficiency by whole-body counting showed an error within 5%, and the experimental measurements showed an error within 10%. Conclusion We developed a simplified phantom for the calibration of the whole-body counter, demonstrating the feasibility of using the simplified phantom instead of a physical body phantom for whole-body counter calibration, which can greatly facilitate whole-body counter calibration for internal radiation monitoring.