在中脑动脉狭窄中分析血液流速的变化,使用跨的颜色编码超声波
Liyong Du1, Yang Hua1, Lingyun Jia1
1Department of Vascular Ultrasonography, Xuanwu Hospital, Capital Medical University, Beijing, PR China; Beijing Diagnostic Center of Vascular Ultrasound, Beijing, PR China; Center of Vascular Ultrasonography, Beijing Institute of Brain Disorders, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing, PR China.
概括
跨骨彩色编码超声波 (TCCS) 显示了内动脉血流的变化. 为校正角度和中脑动脉 (MCA) 形态进行调整,可以提高MCA狭窄症 (MCAS) 的诊断准确度.
科学领域:
- 神经学 神经学
- 医疗成像医学成像
- 血管超声波是指血管超声波.
背景情况:
- 在临床实践中,通过跨色编码超声波 (TCCS) 测量的内动脉血流速度表现出显著的变化.
- 这种变化可能会影响TCCS的诊断准确性,例如中脑动脉狭窄 (MCAS).
研究的目的:
- 为了研究影响中脑动脉 (MCA) 血流速度测量的因素,使用TCCS.
- 通过分析影响因素,提高TCCS对MCAS的诊断准确性.
主要方法:
- 328个MCA血管使用计算机断层扫描血管学 (CTA) 来评估狭窄症分级 (正常,轻度,中度,严重).
- MCA形态被分为I型和II型.
- 峰值缩速度 (PSV) 用TCCS和跨骨多普勒 (TCD) 测量,并与MCAS,校正角度和形态学进行分析.
主要成果:
- 与TCD和CTA相比,TCCS对MCAS的测量显示了更高的平均等级.
- 一般来说,TCCS PSV高于TCD PSV,但当TCCS校正角度≤30°时,可以比较.
- 在TCCS和TCD之间的PSV显著差异被观察到,TCCS校正角度>30°对于I型MCAs和在II型MCAs的所有角度.
- 使用TCCS进行MCAS诊断的最佳切线值随着更高的校正角度而增加.
结论:
- 在TCCS和TCD之间PSV的差异归因于MCA校正角度和形态.
- 针对特定校正角度量身定制的最佳切断值的实施可以提高TCCS的MCAS诊断的准确性.
相关概念视频
01:29Blood Flow
Blood is pumped by the heart into the aorta, the largest artery in the body, and then into increasingly smaller arteries, arterioles, and capillaries. The velocity of blood flow decreases with increased cross-sectional blood vessel area. As blood returns to the heart through venules and veins, its velocity increases. The movement of blood is encouraged by smooth muscle in the vessel walls, the movement of skeletal muscle surrounding the vessels, and one-way valves that prevent backflow.
01:19Assessing Blood pressure using a doppler ultrasound
To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment: