Comparison of dosimetric properties among four commercial multi-detector computed tomography scanners

Takeshi Ohno,Fujio Araki,Ryota Onizuka,Masahiro Hatemura, Toshiaki Shimonobou,Takashi Sakamoto,Shuichiro Okumura, Daichi Ideguchi,Keiichi Honda, Kenji Kawata

Physica Medica（2017）

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摘要

•TG-111 reported new CT dosimetry using Farmer chamber in cylindrical water phantom.•We compare absorbed dose among four MDCT based on TG-111.•Our method made it possible to directly measure the absorbed dose with small uncertainty.•Absorbed dose was calculated using 60Co absorbed dose-to-water calibration factor.•Four MDCT scanners were modeled in Monte Carlo to correspond with measured values.

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关键词

Multi-detector CT,Monte Carlo technique,Ionization chamber measurement,Absorbed dose

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