鼻夹式屏气法在老年患者冠状动脉CT检查中图像质量的研究

A study on image quality of coronary CT examination in elderly patients with nasal clip breath-holding method

中文关键词: 老年, 图像质量, 呼吸训练, 运动伪影

英文关键词: elderly  image quality  breathing training  motion artifact

中文摘要:

      目的 评估鼻夹式屏气法在老年人冠状动脉CT检查中的图像质量.方法 收集复旦大学附属华东医院2024年3-6月期间做冠状动脉CT血管造影者的老年患者73例,所有受检者均行鼻夹式屏气法进行冠状动脉CT血管造影检查(设为观察组),同时回顾性收集2023年3-6月期间行CCTA检查的老年患者73例作为对照组,记录受检者的BMI、辐射剂量、图像CT值的平均数及噪声,冠状动脉分支的病变情况,分析信噪比(SNR)和对比噪声比(CNR),各项指标进行统计学分析.结果 鼻夹式屏气法和常规扫描的2组受检者的冠状动脉图像,观察组噪声比为(38.02±22.96),对照组图像噪声比(28.17±13.63),观察组对比噪声比为(29.04±14.80),对照组对比噪声比(21.96±10.08),2组冠状动脉图像质量差异有统计学意义P＜0.05,2组在BMI、辐射剂量、主动脉图像质量差异无统计学意义P＞0.05.结论 鼻夹式屏气法适合老年人,提高他们在冠状动脉CT检查中的配合度及图像质量.

英文摘要:

      Objective To evaluate the image quality of coronary CT examination in elderly patients with nasal clip breath-holding method.Methods 73 patients who underwent coronary CT examination in Huadong Hospital Affiliated to Fu-dan University from March to June 2024 were collected.All of them underwent coronary CT angiography(CCTA)with the na-sal clamp breath-holding method.Meanwhile,73 elderly patients who underwent CCTA examination from March to June 2023 were retrospectively collected as the control group.Their BMI,radiation dose,average CT value of the image and noise,and the lesion conditions of coronary artery branches were recorded.The signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)were analyzed.Statistical analysis was made for each index.Results The SNR of coronary artery was(38.02±22.96)in the observation group and(28.17±13.63)in the control group.The CNR of coronary artery was(29.04±14.80)in the observation group and(21.96±10.08)in the control group.There were statistically significant differences in the image quality of coronary arteries between the two groups(P＜0.05),but there was no statistically significant difference in BMI,ra-diation dose,and the image quality of the aorta between the two groups(P＞0.05).Conclusion The nasal clamp breath-holding method is suitable for the elderly.It can improve their cooperation and image quality during coronary CT examinations.