摘要
目的:探析双源CT双能量心肌灌注成像的图像质量与辐射剂量。方法:将我院检查的60例疑似冠心病患者选为研究对象,随机分成A、B两组,A组给予双源CT双能量心肌灌注成像检查,B组给予门控双源CT冠状动脉成像检查,分别比较双源CT双能量心肌灌注成像与门控双源CT冠状动脉成像图像质量及辐射剂量。结果:双源CT双能量心肌灌注成像检查辐射剂量为(8.93±1.94)mSv,图像质量评分为(4.62±0.64)分,右冠CNR为(24.44±4.22),左主干CNR为(24.25±4.46),左旋支CNR为(25.15±4.06),门控双源CT冠状动脉成像检查辐射剂量为(8.07±2.08)mSv,图像质量评分为(4.58±0.66)分,右冠CNR为(25.78±4.33),左主干CNR为(23.85±4.38),左旋支CNR为(24.19±4.24),二者数据比较差异无统计学意义(P>0.05)。结论:在临床疾病诊断中应用双源CT双能量心肌灌注成像检查与门控双源CT冠状动脉成像检查图像质量差异不大,辐射剂量稍有增加,但心肌灌注成像能判断心肌缺血且效果比较显著,值得临床进一步研究与推广应用。
Objective:To discuss the image quality and radiation dose of dual-source CT dual-energy myocardial perfusion imaging in patients.Methods:60 suspected coronary heart disease patients receiving examinations in our hospital were selected as the subjects,who were divided into 2 groups.Patients in Group A were examined with dual-source CT dual-energy myocardial perfusion imaging,while patients in Group B received dual-source CT coronary angiography.Then the imaging quality and radiation dose of patients were compared between both groups.Results:The radiation dose,image quality score,contrast to noise ratio(CNR)of the right coronary artery(RCA),CNR of left main coronary artery(LMCA),CNR of left circumflex(LCX)for dual-source CT dual-energy myocardial perfusion imaging were(8.93±1.94)mSv,(4.62±0.64),(24.44±4.22),(24.25±4.46)and(25.15±4.06),respectively;while the respective(8.07±2.08)mSv,(4.58±0.66),(25.78±4.33),(23.85±4.38)and(24.19±4.24)for gated dual-source CT coronary angiography.There was no statistical difference between the data in both groups(P>0.05).Conclusion:There is no obvious difference of imaging quality between the examination methods in clinical diagnoses,only with slightly increased radiation dose for dual-source CT dual-energy myocardial perfusion imaging.However,MR myocardial perfusion imaging can judge myocardial ischemia and its effect is significant,which is worthy of clinical application and promotion.
作者
邓君良
DENG Junliang(The 1st Department of CT,Meizhou People's Hospital,Meizhou 514031,China)
出处
《华夏医学》
CAS
2019年第4期45-47,共3页
Acta Medicinae Sinica
关键词
冠心病
双源CT
心肌灌注成像
图像质量
辐射剂量
coronary heart disease
dual-source CT
myocardial perfusion imaging
image quality
radiation dose
