交叉抬起的手臂位置改善了对比介质的流动在干对比增强的计算机断层扫描
Y Nishiyama1, K Yabuuchi1, Y Nishiyama2
1Department of Radiology, Tokushima Municipal Hospital 2-34 Kitajosanjima, Tokushima 7700812, Japan.
在对比增强计算机断层扫描 (CECT) 中,交叉抬起的手臂 (CRA) 位置显著减少对比介质流入附带静脉. 这种改进的定位可以提高图像质量和在CECT扫描期间的目标器官可视化.
科学领域:
- 放射学 放射学是一门学科.
- 医疗成像医学成像
- 诊断技术 诊断技术
背景情况:
- 对比增强型计算机断层扫描 (CECT) 对于医学成像非常重要.
- 不必要的对比介质流入附带静脉可以降低CET图像质量.
- 传统的患者定位可能并不总是优化对比度的交付.
研究的目的:
- 为了评估交叉抬起的手臂 (CRA) 位置对对比介质流入和图像质量的影响,在CECT.
- 为了比较CRA位置与传统位置的对比度增强和解剖变化.
主要方法:
- 追溯性队列研究涉及92名参与者.
- 传统和CRA位置之间的对比介质流入和CT值 (肺动脉,大动脉,) 的比较.
- 解剖学变化的分析:关节下静脉尺寸和关节侧静脉距离.
主要成果:
- 在CRA的位置显著降低了对比介质流入到附带静脉 (风险比0.22).
- 在肺动脉 (7.0%),主动脉 (7.4%) 和脏 (9.8%) 中观察到CT值升高的CRA位置 (p < .001).
- 在CRA位置增加了下静脉直径 (19.3%,28.1%),面积 (53.6%) 和侧关节静脉距离 (30.0%) (p < .001).
结论:
- CRA 位置有效地防止对比介质流入附带静脉,改善 CECT 图像质量.
- 在CRA位置扩大胸部出口结构,增强对比介质流向目标器官.
- CRA位置提供了一种成本效益高的方法来优化CECT成像.
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