微气泡对比剂改善了对活跃出血的检测
Scott Schoen1, Alexis Prasov2, Ion Candel1
1Center for Ultrasound Research and TranslationHarvard Medical School and Massachusetts General Hospital Boston MA 02114 USA.
IEEE open journal of engineering in medicine and biology
|November 19, 2024
概括
超声波对比剂 (UCAs) 显著改善了创伤患者内出血的检测. 这种新的方法增强了出血的可视化和局部化,有可能增加在医院前的生存率.
科学领域:
- 医疗成像医学成像
- 超声波技术 超声波技术 超声波技术
- 创伤护理 创伤护理
背景情况:
- 评估创伤引起的出血在医院前环境中具有挑战性.
- 焦点评估与创伤超声波 (FAST) 考试在检测正在进行的血液流失方面是有限的.
- 目前的方法很难识别越来越严重的伤害.
研究的目的:
- 使用超声波对比剂 (UCAs) 来增强创伤患者活跃出血的检测.
- 开发新的流量幻影和对比敏感处理技术,用于表征内部出血.
- 改善在医院前环境中实际检测出血的方法.
主要方法:
- 使用了具有自定义流量幻影和对比敏感处理的UCAs.
- 通过一般化对比与噪声比 (CNR) 测量评估出血可视化.
- 在各种流速下使用接收器运行特征 (ROC) 曲线评估检测概率.
- 应用非线性处理 (NLP) 管道用于空间和时间分析.
- 与UCAs和没有UCAs的多普勒信号增强进行比较.
主要成果:
- 与没有对比度的方法相比,UCAs显著增强了出血可视化,平均增加了17%的CNR.
- 在40毫升/分钟的流速下,ROC曲线下的面积从0.72提高到0.99,而UCA则是40毫升/分钟.
- 新的处理技术有效地局部化了出血部位.
- 与传统超声波相比,UCAs提高了多普勒信号检测.
结论:
- 专用非线性处理 (NLP) 管道与UCAs相结合,在检测较慢的出血中提供了显著的改进.
- 这种方法有可能提高在前医院环境中创伤引起的伤害的生存率.
- 在紧急医疗中,UCAs代表了重症监护超声波的有希望的进步.
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