肺部定量CT扫描纹理与COPD的全身炎症和死亡率有关
Hira A Awan1, Muhammad F A Chaudhary1, Anthony D El-Sokkary2
1The Roy J. Carver Department of Biomedical Engineering, Iowa City, IA.
Chest
|April 23, 2025
概括
定量CT扫描纹理,特别是支气管束 (BVB) 和CT扫描密度梯度 (CTDG),与慢性阻塞性肺病 (COPD) 患者的全身炎症和死亡风险增加有关.
科学领域:
- 肺部医学 肺部医学
- 放射学 放射学是一门学科.
- 生物标志物 生物标志物
背景情况:
- 慢性阻塞性肺病 (COPD) 涉及到持续的肺炎,导致支气管血管捆 (BVB) 重塑和降低生活质量.
- 定量CT (QCT) 扫描纹理提供了对局部炎症模式和呼吸系统发病率的见解.
研究的目的:
- 为了研究BVB和CT扫描密度梯度 (CTDG) 纹理之间的关联,从QCT扫描中获得,使用适应性多特征方法,与全身炎症,发病率和COPD死亡率相关.
- 为了确定QCT扫描纹理是否预测COPD进展,特别是FEV1下降和全因死亡率.
主要方法:
- 分析了来自两个大队伍的数据:SPIROMICS (n=2,981) 和COPDGene (n=10,305).
- 评估了QCT扫描生物标志物 (BVB和CTDG纹理) 以及临床共变量,肺气和气道参数 (Pi10).
- 结果包括血炎症生物标志物,CBC计数,肺功能 (FEV1,FEV1/FVC),生活质量 (SGRQ),运动能力 (6MWD) 和呼吸障碍 (mMRC).
主要成果:
- 增加的BVB纹理与较高的中性粒细胞和单细胞数量以及中性粒细胞与淋巴细胞比率 (NLR) 相相关,独立于其他因素.
- 升高的CTDG纹理与增加的中性粒细胞,NLR和瘤亡因子-α.
- 无论是BVB和CTDG纹理都显示出与较低FEV1的显著关联,减少6分钟步行距离 (6MWD),并且重要的是,在两个队伍中增加了全因死亡风险.
结论:
- 包括BVB和CTDG在内的QCT扫描纹理作为有价值的成像生物标志物,反映了肺炎的空间异质性和COPD的整体疾病负担.
- 这些成像生物标志物具有预后价值,可预测COPD患者的疾病进展和死亡率.
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