低剂量高清头颈CT血管成像

Detailed Head & Neck CT Angiography at Low Dose


作者:LaurentMacron, M.D.CCN心血管中心,法国)

翻译:刘士辰 刘华阳
审校:任心爽 吕滨(中国医学科学院阜外心血管医院)


病史 Patient History

男性、70岁。右颈内动脉狭窄CT随访。

A man in his 70s was referred to CT for follow-up of astenosis of the right internal carotid.


Revolution CT采集参数

  • 螺旋扫描模式

  • 螺距0.992:1

  • 扫描范围300mm

  • 智能kV 及智能mA 以确保与患者体型相适应的射线剂量:120kV35-320mA、噪声指数25

  • 体重指数BMI26

  • 应用ASiR-V进一步降低剂量

  • 球管转速0.5s/rot

  • 总曝光时间:1.9s

  • DLP 175 mGy*cm

  • 0.9 mSv


结论

曝光时间小于2秒,射线剂量小于1 mSv 的情况下,Revolution CT即可完成高清头颈CT血管造影。(图1)。

This head and neck angiography was performed in less than two seconds with high-resolution images at less than one milliSievert.

1: 高清头颈CT血管造影


Laurent Macron医生的评价

“Revolution CT快速的头颈血管造影能得到纯净的动脉期图像,而无静脉污染。精确的影像学检查确保了可靠的临床诊断。

With Revolution CT, faster head and neck angiography allows for uniform contrast in pure arterial phase, with no venous contamination. Therefore, it gives us the image accuracy that we need to provide a confident diagnosis to referring clinicians.

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