期刊文献+

个体化低剂量方案用于冠脉支架内再狭窄评估

Individualized low⁃dose scanning regimen for the assessment of coronary in⁃stent restenosis
原文传递
导出
摘要 目的探讨GE 256排Revolution CT低剂量扫描结合个体化对比剂方案在冠状动脉支架内再狭窄评估中的图像质量、辐射剂量及诊断效能。方法回顾性选取2020年8月至2022年8月在北京市仁和医院行冠状动脉支架植入后复查的120例(共142个支架)患者作为研究对象,根据随机数字表法随机分为观察组(60例70个)和常规组(60例72个),均行GE 256排Revolution CT检查。其中,常规组注入70 ml碘普罗胺对比剂;观察组根据体质量指数(BMI)给予个体化剂量。常规组管电压120 kV,管电流534 mAs,观察组管电压、管电流根据患者BMI调节,调节范围为管电压80~120 kV,管电流150~534 mAs。两组患者均于CCTA检查后7~14 d复查冠状动脉造影。对比两组患者的CT图像质量、辐射剂量及碘摄入量、诊断效能。结果常规组与观察组在左冠状动脉主干的CT值、对比噪声比、晕状伪影、支架内径差异方面差异无统计学意义(P>0.05)。常规组在CT剂量指数、CT剂量长度乘积、有效辐射剂量及碘摄入量方面均高于观察组(t=10.30、8.75、10.27、4.60,P<0.05)。观察组、常规组与冠状动脉造影结果诊断效能的一致性分析Kappa值分别为0.904和0.879,结果一致性很好;常规组与观察组在敏感度、特异度方面差异无统计学意义(P>0.05)。结论GE 256排Revolution CT低剂量扫描结合个体化对比剂方案所获得的图像质量及诊断效能与常规方案相当,可有效降低辐射剂量、碘摄入量,值得推广。 Objective To investigate the image quality,radiation dose,and diagnostic efficiency of the regimen of GE 256-slice Revolution CT low-dose scanning,combined with an individualized contrast agent,in the assessment of coronary in-stent restenosis.Methods A total of 120 patients(with 142 stents)treated with coronary stent implantation at the Beijing Renhe Hospital from August 2020 to August 2022 were enrolled in this study.They were randomly divided into an observation group(60 cases with 70 stents)and a conventional group(60 cases with 72 stents)using the random number table method.Both groups received GE 256-slice Revolution CT examinations.Patients in the conventional group were injected with 70 ml of iopromide as a contrast agent each,while those in the observation group were given individualized doses based on their body mass indices(BMIs).A tube voltage of 120 kV and a tube current of 534 mA were applied to the conventional group,whereas the tube voltage and current for the observation group were adjusted within the ranges of 80-120 kV and 150-534 mAs based on patients'BMIs.Both groups received coronary angiography 7-14 d after coronary computed tomography angiography(CCTA).Finally,the CT image quality,radiation dose,iodine intake,and diagnostic efficiency were compared between the two groups.Results Both groups exhibited no significant differences in CT values,contrast-to-noise ratios,blooming artifacts,and stent diameters of the left main coronary artery(P>0.05).The conventional group manifested higher CT dose index,CT dose length product,effective dose,and iodine intake compared to the observation group(t=10.30,8.75,10.27,4.60,P<0.05).With coronary angiography result as the gold standard,the observation and conventional groups yielded Kappa values of 0.904 and 0.879,respectively,suggesting high consistency in diagnostic performance.Additionally,the two groups demonstrated nonsignificant differences in sensitivity and specificity(P>005).Conclusions The regimen of GE 256⁃slice Revolution CT low⁃dose scanni
作者 李飞飞 王振栋 崔新亭 池静静 Li Feifei;Wang Zhendong;Cui Xinting;Chi Jingjing(Department of Radiology,Beijing Renhe Hospital,Beijing 102600,China)
出处 《中华放射医学与防护杂志》 CAS CSCD 北大核心 2024年第1期60-64,共5页 Chinese Journal of Radiological Medicine and Protection
关键词 计算机体层成像 低剂量 个体化 支架内再狭窄 Computed tomography Low dose Individuation In-stent restenosis
  • 相关文献

参考文献1

二级参考文献20

  • 1Slovis TL. The ALARA concept in pediatric CT: myth or reality?[J]. Radiology, 2002, 223(1): 5-6. DOI: 10.1148/radiol.2231012100. 被引量:1
  • 2Zheng M, Wu Y, Wei M, et al. Low-concentration contrast medium for 128-slice dual-source CT coronary angiography at a very low radiation dose using prospectively ECG-triggered high-pitch spiral acquisition[J]. Acad Radiol, 2015, 22(2): 195-202. DOI: 10.1016/j.acra.2014.07.025. 被引量:1
  • 3Oda S, Utsunomiya D, Funama Y, et al. A low tube voltage technique reduces the radiation dose at retrospective ECG-gated cardiac computed tomography for anatomical and functional analyses[J]. Acad Radiol, 2011, 18(8): 991-999. DOI: 10.1016/j.acra.2011.03.007. 被引量:1
  • 4Neefjes LA, Dharampal AS, Rossi A, et al. Image quality and radiation exposure using different low-dose scan protocols in dual-source CT coronary angiography: randomized study[J]. Radiology, 2011, 261(3): 779-786. DOI:10.1148/radiol.11110606. 被引量:1
  • 5Abbara S, Arbab-Zadeh A, Callister TQ, et al. SCCT guidelines for performance of coronary computed tomographic angiography: a report of the Society of Cardiovascular Computed Tomography Guidelines Committee[J]. J Cardiovasc Comput Tomogr, 2009, 3(3): 190-204. DOI:10.1016/j.jcct.2009.03.004. 被引量:1
  • 6Austen WG, Edwards JE, Frye RL, et al. A reporting system on patients evaluated for coronary artery disease. Report of the Ad Hoc Committee for Grading of Coronary Artery Disease, Council on Cardiovascular Surgery, American Heart Association[J]. Circulation, 1975, 51(4 Suppl): 5-40. 被引量:1
  • 7Manke C, Marcus C, Page A, et al. Pain in femoral arteriography. A double-blind, randomized, clinical study comparing safety and efficacy of the iso-osmolar iodixanol 270 mg I/ml and the low-osmolar iomeprol 300 mgI/ml in 9 European centers[J]. Acta Radiol, 2003,44(6):590-596. DOI: 10.1046/j.1600-0455.2003.00129.x. 被引量:1
  • 8Wang R, Schoepf UJ, Wu R, et al. Image quality and radiation dose of low dose coronary CT angiography in obese patients: sinogram affirmed iterative reconstruction versus filtered back projection[J]. Eur J Radiol, 2012, 81(11): 3141-3145. DOI: 10.1016/j.ejrad.2012.04.012. 被引量:1
  • 9Alkadhi H, Scheffel H, Desbiolles L, et al. Dual-source computed tomography coronary angiography: influence of obesity, calcium load, and heart rate on diagnostic accuracy[J]. Eur Heart J, 2008, 29(6): 766-776. DOI: 10.1093/eurheartj/ehn044. 被引量:1
  • 10Cademartiri F, Mollet NR, van der Lugt A, et al. Intravenous contrast material administration at helical 16-detector row CT coronary angiography: effect of iodine concentration on vascular attenuation[J]. Radiology, 2005, 236(2): 661-665. DOI: 10.1148/radiol.2362040468. 被引量:1

共引文献22

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部