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影响双源CT冠状动脉成像质量技术因素的探讨 被引量:5

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摘要 目的探讨双源CT冠状动脉成像质量的影响因素。方法分析400例双源CT冠状动脉造影检查资料,评价呼吸训练、电极的放置、造影剂的剂量及浓度、监测层面的选择、监测点位置的放置、心动周期内不同R-R间期时相重建图像的冠状动脉成像质量。结果 20例患者由于屏气不好出现呼吸运动伪影,8例出现电极产生的金属放射性伪影。6例由于造影剂剂量不足出现动脉灌注不足而导致冠状动脉显示欠佳。6例患者监测层面及感兴趣区的选择不准确导致冠状动脉对比不良及右心结构对右冠状动脉产生影响。4例患者在心动周期内不同R-R时相重建图像出现不同的效果。结论患者的呼吸训练、电极正确的放置、造影剂剂量的正确选择、监测层面及感兴趣区的正确放置、选择最佳的重建时相等有利于提高冠脉的成像质量。
出处 《宁夏医学杂志》 CAS 2010年第10期927-928,共2页 Ningxia Medical Journal
基金 宁夏自治区卫生厅资助项目(2008042)
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