在CT肺血管造影过程中,与不同吸入深度相比,肺膜中的度
Koichiro Yasaka1, Hiroyuki Saigusa1, Osamu Abe1
1Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan.
The British journal of radiology
|January 17, 2025
概括
在双能量CT肺血管造影期间改变吸气深度显著影响上肺叶中的度. 深呼吸会增加水平,特别是在右上,右中,左上叶.
科学领域:
- 放射学 放射学是一门学科.
- 医疗成像医学成像
- 肺部医学 肺部医学
背景情况:
- 双能量CT (DECT) 肺血管造影对于诊断肺栓塞至关重要.
- 在DECT成像中的度反映了对比介质的分布.
- 鼓舞人心的机动可以影响肺部体积和潜在的对比度分布.
研究的目的:
- 评估不同吸入深度 (吸入结束与吸入中期) 对肺膜和主要肺动脉中度的影响.
- 为了确定灵感水平的变化是否会影响定量DECT参数.
主要方法:
- 从2020年7月到2023年6月的DECT肺血管扫描的回顾性分析.
- 根据喘息指令将患者分组为:呼吸末期 (2022年1月之前) 和呼吸中期 (2022年1月之后).
- 感兴趣的区域被放置在肺叶和主要肺动脉上,以测量度 (mgI/mL).
主要成果:
- 与终端吸气相比,中吸气停息显示右上部 (0.91与0.81 mgI/mL相比),右中部 (0.74与0.67 mgI/mL相比) 和左上叶 (0.95与0.85 mgI/mL相比) 的平均度更高.
- 灵感深度是右上,右中,左上叶度的一个重要因素.
- 主肺动脉的度在吸入中期 (13.21 mgI/mL) 与吸入结束 (12.51 mgI/mL) 相比较高,在≥70公斤的患者中具有意义.
结论:
- 改变吸入深度从吸入结束到吸入中期显著影响特定肺叶中的度 (右上,右中,左上).
- 在DECT肺血管造影过程中,中期吸入性屏息可以提高肺上部的度.
- 这些发现表明,优化启发性操纵可能会改善DECT图像质量和诊断准确性.
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