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- 2018
可变螺距技术在320排CT急性胸痛三联检查中的应用
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Abstract:
摘要 目的：探讨可变螺距(VHP)技术在320排CT急性胸痛三联检查中的可行性.方法: 连续收集44例采用320排CT行胸痛三联检查的患者,与54例单独行320排CT主动脉成像、52例肺动脉成像及48例冠状动脉成像患者生成的图像分别进行对照,针对患者基本资料、图像质量及辐射剂量使用SPSS19.0软件进行统计学分析.结果: 两组患者性别构成比、年龄差异对比无统计学差异.三联组与对照组中主动脉、肺动脉及冠状动脉图像质量的优良率对比,均无统计学差异(P>0.05).三联组与对照组中降主动脉、右冠状动脉中段、左主干、左冠状动脉前降支近段、左冠状动脉前降支中段、左冠状动脉旋支近段及左冠状动脉旋支远段血管强化CT值不同,有统计学差异(P<0.05),以上所有血管增强CT值均大于300 HU.两组患者剂量长度乘积、有效剂量结果对比,均有统计学差异(P<0.05).结论: VHP技术可以一次扫描完成急性胸痛患者主动脉、肺动脉及冠状动脉的CT血管造影(CTA)检查.与单纯主动脉、肺动脉及冠状动脉CTA成像对比,图像质量无区别,对于急性胸痛病因的诊断具有极其重要的意义.
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