論文種別	原著(症例報告除く)
言語種別	英語
査読の有無	その他(不明)
表題	Evaluation of the effectiveness of a tunnel-shaped radiation shielding system in CT-guided interventions: Reduction of scattered radiation in phantom experiment.
掲載誌名	正式名：Acta radiologica (Stockholm, Sweden : 1987) 略　 称：Acta Radiol ISSNコード：16000455/02841851
掲載区分	国外
巻・号・頁	pp.Online ahead of print
著者・共著者	Miyuki Nakatani, Shuji Kariya, Yasuyuki Ono, Takuji Maruyama, Yutaka Ueno, Noboru Tanigawa
発行年月	2025/11
概要	BackgroundComputed tomography (CT) fluoroscopy provides high-resolution images and is widely used for safe and accurate procedures, but it exposes operators to high radiation doses.PurposeTo develop and evaluate a tunnel-shaped shielding system to reduce operator exposure to scattered radiation during CT fluoroscopy-guided procedures.Material and MethodsThe shield, designed based on scattered radiation distribution, consists of a semi-cylindrical leaded acrylic part and a bottom plate with a non-lead shielding board surrounding the patient. Radiation doses were measured with and without the shield using patient and operator phantoms. Dosimeters were placed at 10 locations on the operator phantom, including the eye lens, thyroid, chest, abdomen, pelvis, legs, patient-side armpit, and needle-holding hand. Percentage reductions in radiation exposure were calculated.ResultsThe tunnel-shaped shield significantly reduced radiation exposure, with dose reductions of 83%-100% at the eye lens, 88%-96% at the thyroid, 84%-95% at the upper chest, 84%-92% at the lower chest, 88%-94% at the abdomen, 91%-94% at the pelvis, 57%-68% at the upper leg, 44%-83% at the lower leg, 90%-94% at the patient-side armpit, and 73%-86% at the needle-holding hand. All reductions were statistically significant.ConclusionPhantom experiments demonstrated that the tunnel-shaped shielding system effectively reduces operator exposure to scattered radiation during CT fluoroscopy-guided procedures.
DOI	10.1177/02841851251389937
PMID	41197134