没有静脉对比剂的肺栓塞检测,使用来自双能CT的电子密度和Z-有效图
Tommaso D'Angelo1,2, Simone Barbera1, Velio Ascenti3
1Diagnostic and Interventional Radiology Unit, BIOMORF Department, University Hospital "Policlinico G. Martino", 98100 Messina, Italy.
电子密度 (ED) 地图与未增强的双层双能量CT (dl-DECT) 的Z-effective (Zeff) 图像显示了检测肺栓塞 (PE) 的可行性. 这种方法为患有对比介质的禁忌的患者提供了潜在的替代方案.
科学领域:
- 放射学 放射学是一门学科.
- 医疗成像医学成像
- 心血管成像 - 心血管成像
背景情况:
- 肺栓塞 (PE) 诊断通常依赖于对比度增强CT (CECT).
- 类对比剂具有风险,特别是对于患有功能衰竭或过敏的患者.
- 开发用于PE检测的非对比成像技术具有临床意义.
研究的目的:
- 评估使用电子密度 (ED) 地图与未增强的双层双能量CT (dl-DECT) 的Z-effective (Zeff) 图像相结合用于肺栓塞 (PE) 检测的可行性.
- 评估这种新型成像方法的诊断性能.
主要方法:
- 对150名因怀疑PE而接受未增强的dl-DECT患者的回顾性分析.
- 在Zeff图像上叠加的颜色编码ED地图的生成.
- 由两位放射科医生对CECT结果进行的PE的独立评估 (参考标准).
主要成果:
- ED-Zeff地图显示出高诊断性能,整体准确率为86.67%.
- 对于PE检测的灵敏度和特异性分别为85%和86.92%.
- 观察者内部和观察者之间的良好一致性 (科恩的卡帕≥0.9) 被观察到.
结论:
- 电子密度 (ED) 地图与未增强的dl-DECT的Zeff图像相结合,是检测肺栓塞 (PE) 的可行工具.
- 这种技术可能对患有对离子对比剂的禁忌的患者特别有价值.
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