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目的在猪的气道阻塞模型上使用CT特殊的气体容积测定和超极化气体氦3He-MRI来量化肺内局部的残气。材料与方法获得动物研究批准,4只猪在完成无关的心脏实验后处死,取下猪肺。在段或叶支气管内放置反向单向阀门创建
Objective To quantify the local residual gas in the lung using the CT specific gas volumetric determination and hyperpolarized gas helium 3He-MRI on a pig model of airway obstruction. Materials and Methods Animals were approved for the study. Four pigs were sacrificed after completing unrelated cardiac tests and piglets were removed. Place the reverse one-way valve in the segment or leaf bronchus to create