开发和评估一个计算机算法来解释肺功能测试的解释
Yuh-Chin T Huang1, Luke Henriquez2, Hengji Chen3
1Department of Medicine, Duke University Medical Center, Durham, NC, United States of America.
PloS one
|January 29, 2024
概括
肺功能测试 (PFT) 的新计算机算法与临床医生的解释高度一致,提高了诊断肺部疾病如阻塞和限制的准确性和效率. 它还为小呼吸道功能障碍提供了敏感的测量.
科学领域:
- 肺部医学 肺部医学
- 医疗信息学 医疗信息学
- 计算生物学 计算生物学
背景情况:
- 临床医生的肺功能测试 (PFT) 解释涉及主观模式识别和基于规则的策略,导致变化.
- 现有的解释方法可能容易导致患者和解释员的错误,影响诊断的准确性.
- 在PFT中的生理缺陷往往呈现出可识别的模式,可以系统地分类.
研究的目的:
- 开发和验证用于解释PFT的计算机算法,旨在减少变化并提高准确性.
- 为了比较算法的解释与专家临床医生在PFT报告的大数据集中的评估.
- 评估算法的识别特定肺部疾病的能力,包括小呼吸道功能障碍.
主要方法:
- 使用Python开发了一个计算机算法,利用pdfplumber包从PDF格式的PFT报告中提取数据.
- 该算法将流量体积循环 (FVL) 数字化并提取数值,应用预定义的阻塞 (FEV1/FVC<0.7),限制 (TLC<80%pred) 和异常DLCO的标准.
- 一个小气道疾病指数 (SADI) 被纳入,以量化FVL特征表明小气道功能障碍,与自然语言处理 (NLP) 用于关键字的识别.
主要成果:
- 该算法显示了与临床医生的解释达成一致的高率:94.4% (科恩的卡帕0.868) 阻碍,99.0% (0.979) 限制,和87.9% (0.750) 异常DLCO.
- 在正常FEV1/FVC的PFT中,该算法发现了190例潜在的小呼吸道功能障碍 (SADI < LLN),其中67.9%也被临床医生标记.
- 该算法与临床医生的解释达成了大约90%的总体一致,在检测小呼吸道功能障碍方面显示出灵敏度.
结论:
- 开发的计算机算法为PFT解释提供了一种一致和客观的方法,与专家临床医生可比.
- 该算法提高了诊断效率,并减少了解释肺功能测试时的人类错误.
- 这种计算方法为PFT分析提供了一个可扩展的解决方案,可以适应各种解释策略和平台.
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