双源CT冠脉成像中患者因素与对比剂示踪扫描次数的关系

The relationship between the patient′s factors and bolus tracking repetition of dual-source CT coronary angiography

目的:寻找双源CT冠脉成像(DSCT-CCTA)中患者因素对对比剂示踪扫描次数的影响。方法:搜集2009年行双源CT冠脉检查691例患者资料,采用多因素线性关系分析方法,回顾性分析患者性别、年龄、心率(HR)及有无心律失常(Arr)、高血压(Hyp)、糖尿病(DM)、心瓣膜病(VHD)、冠脉支架植入(CSI)等因素与对比剂示踪扫描次数的关系。结果:对比剂示踪扫描次数与性别、HR呈负相关,与年龄及患有心律失常、心瓣膜病呈正相关,与患者是否患有高血压、DM、冠脉支架植入等因素关系不密切。结论:老年、男性、心率慢、心律失常或有心瓣膜病的患者DSCT-CCTA检查时适当延迟对比剂示踪扫描的起始时间,减少对比剂示踪扫描次数,从而减少冠脉CT检查中的X线辐射剂量。

Objective：To investigate the relationship between the patient′s factors and bolus tracking repetition of dual-source CT coronary angiography（DSCTCA）.Methods：DSCTCA data of 691 patients were retrospectively analyzed.Multivariate linear relationship analysis was used to evaluate the impact of gender,age,heart rate and with or without arrhythmia,hypertension（Hyp）,diabetes mellitus（DM）,valvular heart disease（VHD） and coronary stent implantation（CSI） on bolus tracking repetition.Results：Gender、HR were negatively correlated to the repetition,while Age、Arr、VHD correlated to the repetition positively.Hyp、DM、CSI were not correlated significantly to repetition.Conclusion：During DSCTCA,the bolus tracking scan should be delayed a little longer if the patient is an old man with slow heart rate,arrhythmia,valvular heart disease to reduce the repetition and radiation dose.