在日本中年和老年人中,计算机断层扫描中的肺体积的参考方程
Naoya Tanabe1, Susumu Sato2, Takafumi Shimada3
1Department of Respiratory Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan.
Respiratory investigation
|December 15, 2023
概括
动脉样硬化多民族研究 (MESA) 的肺体积方程对日本成年人进行了优化. 这提高了预测肺体积和表征慢性阻塞性肺病 (COPD) 患者肺部过膨胀的准确性.
科学领域:
- 肺部医学 肺部医学
- 放射学 放射学是一门学科.
- 医疗成像医学成像
背景情况:
- 用计算机断层扫描 (CT) 来精确测量肺体积需要特定人群的参考值.
- 针对不同美国人群而开发的多民族动脉样硬化研究 (MESA) 方程对日本人群的适用性进行了评估.
- 这项研究旨在验证和完善日本成年人的MESA方程,并将其应用于表征慢性阻塞性肺病 (COPD) 和肺部过膨胀.
研究的目的:
- 在日本队列中验证现有的MESA肺体积预测方程.
- 优化MESA方程,以提高日本中年和老年人的准确性.
- 评估优化方程在确定COPD患者肺部过膨胀的有用性.
主要方法:
- 验证涉及783个无症状,从未吸烟的日本成年人,年龄≥40岁的CT队列.
- 通过调整缩放因子来最大限度地减少根平均平方误差 (RMSE) 来优化MESA方程.
- 在199名COPD患者的单独队列中测试了适用性.
主要成果:
- 原来的MESA方程解释了无症状从未吸烟者肺体积变异的60% (R2=0.60).
- 优化将RMSE从714毫升降至637毫升,大大提高了预测准确度.
- 肺部过度膨胀 (预测的肺体积>122%的测量) 在30%的COPD患者中被发现,与心球肺气泡和空气捕获相关.
结论:
- 对于日本中年和老年人来说,MESA肺体积预测方程已成功优化.
- 精确的方程在这个人群中提供了更准确的肺体积预测.
- 该研究表明,该方程在鉴定COPD患者肺部过度扩张时具有实用性.
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