通过Technegas SPECT量化的通风缺陷和超极化Xe MRI的比较
Nisarg Radadia1, Yonni Friedlander2,3, Eldar Priel2,4,5
1Division of Respirology, Department of Medicine, McMaster University, Hamilton, ON, Canada.
Frontiers in physiology
|May 26, 2023
概括
通过Technegas SPECT测量的通风缺陷百分比 (VDP) 和高极化129XeMRI是可比的,特别是在COPD患者中. 这两种成像方法都显示COPD患者的VDP更高,与肺功能减弱相关.
科学领域:
- 肺部医学 肺部医学
- 医疗成像医学成像
- 放射学 放射学是一门学科.
背景情况:
- 透气成像对于评估肺功能至关重要,特别是在肺癌切除之前.
- 德尼加斯SPECT和超极化129XeMRI是通风成像的理想对比剂,但尚未直接比较.
- 将这些方法进行比较对于理解它们在患有或没有阻塞性肺病的患者的临床实用性至关重要.
研究的目的:
- 为了比较Technegas SPECT评估的通风缺陷百分比 (VDP) 和超极化129XeMRI.
- 在接受肺癌切除术的患者中评估这两种成像方法之间的相关性和一致性.
- 评估阻塞性肺病对两种模式的VDP测量的影响.
主要方法:
- 计划进行肺癌切除的41名成年患者在同一天接受了Technegas SPECT,高极化129XeMRI,螺旋计和DLCO测量.
- 使用两个方法量化了通风异常:自适应值 (VDP_T) 和k-平均集群 (VDP_K).
- 使用斯皮尔曼相关性和布兰德-阿尔特曼分析来确定模式之间的相关性和一致性.
主要成果:
- 从Technegas SPECT和129XeMRI进行的VDP测量显示出显著的相关性 (VDP_T:r=0.48,p=0.001;VDP_K:r=0.63,p<0.0001).
- 在这两种模式中,更高的VDP与更低的FEV1/FVC和DLCO相关.
- 与那些患有喘或没有阻塞性肺病的参与者相比,COPD的参与者对SPECT和MRI的VDP显著更高.
结论:
- 尽管成像技术有所不同,Technegas SPECT和129Xe MRI对通风缺陷的定量评估是可比的.
- 这两种方法都有效地识别了COPD患者的通风缺陷增加.
- 这些发现支持Technegas SPECT和129XeMRI在评估肺癌患者的通风异常方面的临床实用性.
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