身体成分对胸部CT对比度增强的影响:一项随机对照试验
BJR open
|November 9, 2023
概括
胸部CT的身体组成量身定制的对比介质协议提供了比固定体积方法更一致的增强效果. 这种方法减少了不同患者身体类型的图像质量的变化.
科学领域:
- 放射学 放射学是一门学科.
- 医疗成像医学成像
- 诊断成像 诊断成像 诊断成像
背景情况:
- 胸部CT中的对比介质 (CM) 协议对于诊断准确性至关重要.
- 患者的身体组成可以影响CM增强和图像质量.
- 基于个体患者特征优化CM协议是一个正在进行的研究领域.
研究的目的:
- 为了比较固定体积CM协议的有效性与结合的总体体重 (TBW) 和身体组成量身定制的协议在胸部CT.
- 为了评估不同的身体组成 (正常,肌肉,超重) 的图像质量和CM增强.
主要方法:
- 这是一项前性研究,涉及179名患者接受了对比度增强的胸部CT.
- 患者被随机分为两个组:固定CM体积 (组1) 和根据身体组成量身定制的CM体积 (组2).
- 图像质量,特别是血管衰减,使用t测试和Pearson的r相关性在组和身体组成之间进行了比较.
主要成果:
- 根据人体组成量身定制的协议 (组2) 与固定协议 (组1) 相比,导致更均的增强.
- 第1组显示肌肉和超重患者的血管衰减较低,而正常患者的衰减增加.
- 固定的方案在特定的身体类型中显示了衰减和TBW/腰围之间的显著相关性,一些超重的患者低于最佳HU值.
结论:
- 在胸部CT中,结合TBW和人体构成量身定制的CM协议,导致更均的增强和更少的低于最佳结果.
- 这种量身定制的方法比固定体积协议具有优势,特别是在多样化的患者群体中.
- 这项研究是首次调查人体构成对胸部CT中CM增强的影响.
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