Radiation Dose Evaluation in 3D Rotation Angiography and Cone-beam Computed Tomography with a Flat Panel Detector
フラットパネルディテクタによる3D ローテーションアンギオグラフィ,コーンビームCT の被ばく線量評価

Shigenobu Seguchi, Takaya Saijou, Yoshinobu Ishikawa, Shuji Koyama
2014 Japanese Journal of Radiological Technology  
The aim of this study was to evaluate radiation dose in patients undergoing three-dimensional rotation angiography (3DRA) and cone-beam computed tomography (CBCT) using a flat panel detector (FPD). Radiation doses were measured for angiography equipment using small silicon-photodiode dosimeters that were implanted in various positions in tissues and organs within an anthropomorphic phantom of a standard Japanese adult male. Output signals from the dosimeters were read out on a computer, from
more » ... ch organ and effective doses were calculated according to guidelines published in International Commission on Radiological Protection Publication 103. Lens doses and effective doses obtained in this study were 1.6 mGy and 0.13 mSv for 3DRA, 20 mGy and 1.7 mSv for CBCT (normal mode). 3DRA provided substantial lens doses and effective dose reduction, which were 8% of the doses in CBCT (normal mode).
doi:10.6009/jjrt.2014_jsrt_70.7.646 pmid:25055944 fatcat:hsy4twb5arcevjyupqdpkeipz4