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常用的肺活量、血液气体分析等肺功能测定方法多为双肺全部机能的检查。这些检查对肺局部病灶之机能改变反映的不够准确,在正常肺组织代偿较好时可能掩盖了病患部位机能减退而呈假阴性结果。放射性同位素测定肺功能较简单、安全、不痛苦,采用多探头功能仪或γ照相机常可达到对肺分区功能的连续观察,提供定量数据,配合灌注与吸入闪烁图,对呼吸系统某些疾病的研究和临床应用上有一定的价值。为了探索肺部血流灌注、换气与
Commonly used vital capacity, blood gas analysis and other lung function testing methods are mostly double lung function check. These tests on the local changes in lung function reflects the lack of accuracy, when the normal lung tissue compensated better may mask the performance of patients with false negative results. Radioisotope determination of lung function is relatively simple, safe, not painful, multi-probe function or gamma camera can often achieve continuous observation of lung function, provide quantitative data, with perfusion and inhalation scintigraphy, the respiratory system of certain diseases Research and clinical applications have some value. In order to explore the lung perfusion, ventilation and