FEASIBILITY STUDY OF 80 KV COMBINED WITH SAFIRE TECHNOLOGY IN REDUCING CHEST CT RADIATION DOSE IN INFANTS

Journal of Chengde Medical University ›› 2020, Vol. 37 ›› Issue (2): 119-121.

FEASIBILITY STUDY OF 80 KV COMBINED WITH SAFIRE TECHNOLOGY IN REDUCING CHEST CT RADIATION DOSE IN INFANTS

<a href="http://tougao.cdmc.edu.cn:8088/EN/article/advancedSearchResult.do?searchSQL=(((YAN Shi-xin[Author]) AND 1[Journal]) AND year[Order])" target="_blank">YAN Shi-xin</a>,<a href="http://tougao.cdmc.edu.cn:8088/EN/article/advancedSearchResult.do?searchSQL=((( DONG Chun-yan[Author]) AND 1[Journal]) AND year[Order])" target="_blank"> DONG Chun-yan</a>,<a href="http://tougao.cdmc.edu.cn:8088/EN/article/advancedSearchResult.do?searchSQL=((( HOU Yu-guang[Author]) AND 1[Journal]) AND year[Order])" target="_blank"> HOU Yu-guang</a>,<a href="http://tougao.cdmc.edu.cn:8088/EN/article/advancedSearchResult.do?searchSQL=((( et al[Author]) AND 1[Journal]) AND year[Order])" target="_blank"> et al</a>

Imaging Department, Wowmen and Children branch of Daqing People's Hospital, Heilongjiang Daqing 163001, China

Received:2019-11-19 Online:2020-04-10 Published:2021-11-19

80kV管电压联合SAFIRE技术降低婴幼儿胸部CT辐射剂量的可行性研究

闫世新¹, 董春艳¹, 侯宇光², 雍敏², 毕纯龙^2△

1.大庆市人民医院妇女儿童分院影像科,黑龙江大庆 163001;
2.大庆油田总医院CT室

通讯作者: △

Abstract

Abstract: Objective: To study the feasibility of 80kV combined with original data-based iterative technology (SAFIRE) in reducing chest CT radiation dose in infants. Methods: 68 infants with chest CT scan were randomly divided into conventional dose group (n=34) and low dose group (n=34). The infants in conventional dose group underwent chest CT examination with 100kV tube voltage and filtered back projection (FBP) reconstruction; the infants in low dose group underwent chest CT examination with 80kV tube voltage and SAFIRE reconstruction. The image quality and radiation dose of 2 groups were compared. Results: There was no statistically significant difference in subjective image quality and objective image quality between conventional dose group and low dose group (P>0.05). The radiation dose of infants in low dose group was significantly lower than conventional dose group (P<0.05). Conclusions: 80kV tube voltage combined with SAFIRE technology can be used to reconstruct chest CT of infants, the image quality not only can be used for diagnosis, but also can significantly reduce the radiation dose, which can be regarded as the best chest CT of infants.

Key words: Infants, Chest, CT scan, Iterative technology (SAFIRE), Radiation dose

摘要： 目的探讨80kV管电压联合基于原始数据的迭代技术（SAFIRE）在降低婴幼儿胸部CT辐射剂量中的可行性。方法 68例行胸部CT扫描的婴幼儿随机分为常规剂量组（n=34）和低剂量组（n=34）。常规剂量组扫描时管电压为100kV,采用滤波反投影(FBP)技术重建图像;低剂量组管电压为80kV,应用SAFIRE技术重建。比较两组的图像质量及辐射剂量。结果两组图像主观质量评价、客观质量评价结果比较,差异均无统计学意义（P>0.05）。低规剂量组患儿的辐射剂量明显低于常规剂量组（P<0.05）。结论婴幼儿胸部CT扫描采用80kV管电压扫描联合SAFIRE技术重建,不仅图像质量可用于诊断,且能明显降低受检者的辐射剂量,可作为婴幼儿胸部CT扫描的最佳方案。

关键词: 婴幼儿, 胸部, CT扫描, 迭代技术（SAFIRE）, 辐射剂量

CLC Number:

R814.2

YAN Shi-xin, DONG Chun-yan, HOU Yu-guang, et al. FEASIBILITY STUDY OF 80 KV COMBINED WITH SAFIRE TECHNOLOGY IN REDUCING CHEST CT RADIATION DOSE IN INFANTS[J]. Journal of Chengde Medical University, 2020, 37(2): 119-121.

闫世新, 董春艳, 侯宇光, 雍敏, 毕纯龙. 80kV管电压联合SAFIRE技术降低婴幼儿胸部CT辐射剂量的可行性研究[J]. 承德医学院学报, 2020, 37(2): 119-121.

References

[1] 李昊岩,段晓岷,刘勇,等.极低剂量扫描模式对婴幼儿大气道病变筛查的可行性研究[J].医学影像学杂志,2017,27(6):1073-1078.
[2] 原桂梅,庞永亮,齐钧,等.多排螺旋CT低剂量扫描诊断婴幼儿气管、支气管异物价值[J].现代医用影像学,2015,24(3):538-540.
[3] 蒋超,杨月娥,蔡娟,等.双源CT管电压80kV联合SAFIRE技术降低甲状腺增强扫描辐射剂量的研究[J].承德医学院学报,2019,36(1):31-34.
[4] 吴永娟,毕纯龙,雍敏,等.双源CT Flash模式双低剂量扫描联合SAFIRE在冠状动脉成像中的可行性研究[J].临床放射学杂志,2016,35(1):142-146.
[5] 杨富阁,高剑波,梁盼,等.低管电压结合AIDR技术在优化婴幼儿胸部CT扫描方案中的价值[J].医学研究杂志,2014,43(4):142-144.
[6] BRENNER D J, HALL E J.Computed tomography an increasing source of radiation exposure[J].N Engl J Med, 2007, 357(22): 2277-2284.
[7] 边传振,卞宠平,戴石,等.外伤儿童胸腹部联合CT扫描的低剂量研究[J].临床放射学杂志,2019,38(9):1742-1746.
[8] No authors listed. The ALARA (as low as reasonably achievable) concept in pediatric CT intelligent dose reduction. Multidisciplinary conference organized by the Society of Pediatric Radiology.Augest 18-19, 2001[J]. Pediatr Radiol, 2002, 32(4): 217-313.
[9] SIEGEL M J, SCHMIDT B, BRADLEY D, et al.Radiation dose and image quality in pediatric CT: Effect of technical factors and phantom size and shape[J]. Radiology, 2004, 233(2): 515-522.
[10] 李佩玲,蒋娜,赵宇,等.滤波反投影与迭代算法的图像质量及左心室功能评价准确性的比较研究[J].中国临床医学影像杂志,2015,26(12):869-872.
[11] 曹希明,郑君惠,张静,等.双源CT大螺距、70kV管电压结合迭代算法低辐射低对比剂CCTA研究[J].医学影像学杂志,2019,29(10):1694-1699.
[12] 杨震,杨树欣,高磊,等.CT图像伪影消除技术的研究[J].中国医学装备,2015,12(2):330-333.
[13] WANG R, SCHOEPF U J, WU R, et al.CT coronary angiography:image quality with sinogram-affirmed iterative reconstruction compared with filtered back-projection[J]. Clin Radiol, 2013, 68(3): 272-278.
[14] 蔡静,丁茗,薛建平,等.80kV结合迭代算法进行多层螺旋CT小儿胸部成像可行性[J].中国医学物理学杂志,2016,33(3):297-300.
[15] 曹国全,蔡志敏,陈勇春,等.低管电压联合迭代重建算法对胸部CT血管造影图像质量及辐射剂量的影响[J].中华放射医学与防护杂志,2015,35(5):393-396.