优化CTA技术在婴幼儿复杂先天性心脏病术前诊断的研究

发布时间：2018-02-26 10:00

  本文关键词： 小儿先天性心脏病 心电门控 迭代重建 辐射剂量　出处：《中国CT和MRI杂志》2016年11期 　论文类型：期刊论文

【摘要】：目的 探讨优化低剂量CTA方案在小儿先天性心脏病(CHD)术前检查的临床价值。方法 CHD患儿139例(年龄1天-6岁),根据患儿就诊时间分别采用前门控和高级混合迭代重建技术(i Dose4)、前门控和滤波反投影重建(FBP)、非门控和FBP进行CTA检查。采用方差分析及Post-Hoc双样本T检验对每组患儿有效射线辐射剂量及图像质量进行对比分析;并以手术结果为诊断标准,采用CTA诊断结果与超声心动图(UCG)诊断结果进行符合一致性分析。结果 1.有效射线辐射剂量:前门控i Dose4组较前门控FBP组降低13.8%、前门控i Dose4组较非门控FBP组降低23.5%(P0.05)。2.图像质量评估:前门控i Dose4组、前门控FBP组、非门控FBP组分别为:Ⅲ级36、57、12例;Ⅱ级0、25、8例,(χ~2=15,.879,P0.05)。3.经手术治疗的CHD患儿(n=102),术前CTA、UCG诊断结果与手术结果对比:CTA总诊断符合率94.5%(P0.001),UCG诊断符合率90.4%(P0.001)。结论 低剂量前门控i Dose4 CTA技术在小儿CHD的术前应用具有重要临床意义。
[Abstract]:Objective to evaluate the clinical value of optimizing low dose CTA regimen in preoperative examination of congenital heart disease in children. Methods 139 patients with CHD (age 1 day 6 years old) were treated with front door control and advanced mixed replacement according to the time of treatment. Generation reconstruction technique was used to examine CTA. The effective radiation dose and image quality of each group were compared by variance analysis and Post-Hoc double sample T test. And based on the results of surgery as diagnostic criteria, Results 1. Effective radiation dose: Qianmen control I Dose4 group was 13. 8 lower than the front door control FBP group, and the front door control I Dose4 group was lower than the non-gated FBP group. Image quality assessment: Qianmen control I Dose4 group, In front door control FBP group and non gated FBP group, there were 12 cases of 鈪，

本文编号：1537540