イマイズミ　ヒロマサ   Hiromasa Imaizumi   今泉　大将    所属   川崎医療福祉大学  医療技術学部 診療放射線技術学科    職種   講師
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Usefulness of electrocardiogram mA modulation during the electrocardiogram-gated CT scan in paediatrics with high heart rate for different helical pitch: a phantom-based assessment study.
掲載誌名	正式名：Radiation protection dosimetry 略　 称：Radiat Prot Dosimetry ISSNコード：17423406/01448420
掲載区分	国外
巻・号・頁	199(12),pp.1295-1300
著者・共著者	Takanori Masuda, Yoshinori Funama, Takeshi Nakaura, Tomoyasu Sato, Takayuki Oku, Rumi Gotanda, Keiko Arao, Hiromasa Imaizumi, Shinichi Arao, Atsushi Ono, Junichi Hiratsuka, Kazuo Awai
発行年月	2023/06
概要	We investigated the effect of electrocardiographic (ECG) mA-modulation of ECG-gated scans of computed tomography (CTA) on radiation dose and image noise at high heart rates (HR) above 100 bpm between helical pitches (HP) 0.16 and 0.24. ECG mA-modulation range during ECG-gated CTA is 50-100 mA, the phase setting is 40-60% and the scan range is 90 mm for clinical data during HR for 90, 120 and 150 bpm. Radiation dose and image noise in Housfield units are measured for CT equipment during HR for 90, 120 and 150 bpm between HP 0.16 and 0.24. ECG mA-modulation, dose reduction ratio for HR 90, 120 and 150 bpm are 19.1, 13.4 and 8.7% at HP 0.16 and 17.1, 13.3 and 7.7% at HP 0.24, respectively. No significant differences were observed in image noise between both HP. Dose reductions of 8-24% are achieved with ECG mA-modulation during ECG-gated CCTA scan, which is beneficial even in high HR more than 100 bpm.
DOI	10.1093/rpd/ncad180
PMID	37337642