Ryo U Y
University of Kentucky College of Medicine, Lexington.
Radiol Clin North Am. 1990 May;28(3):657-63.
The quantitative measurement of regional ventilation and perfusion distribution is simply and reliably accomplished by using routinely available radioactive gas and perfusion lung scanning agents, and a large field-of-view gamma camera with an on-line computer. The preoperative prediction of postsurgical loss in lung function can be made accurately by using the quantitative ventilation-perfusion lung scan technique. Either a regional ventilation study or perfusion study may be used for the prediction, but analysis of regional ventilation distribution appears to be a better parameter than that of perfusion distribution for the prediction of postoperative loss of FEV1. In the rare case of a patient with a marked ventilation-perfusion deficit, quantitative distribution of both ventilation and perfusion may be needed for an accurate assessment of postsurgical lung function.
通过使用常规可得的放射性气体和灌注肺扫描剂以及配备在线计算机的大视野伽马相机，能够简单且可靠地完成区域通气和灌注分布的定量测量。运用定量通气-灌注肺扫描技术可以准确地对术后肺功能损失进行术前预测。区域通气研究或灌注研究均可用于该预测，但对于预测术后第一秒用力呼气量（FEV1）的损失而言，分析区域通气分布似乎是比灌注分布更好的参数。在极少数存在明显通气-灌注不足的患者中，可能需要通气和灌注的定量分布来准确评估术后肺功能。
