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肺血循环变化与肺部疾病发生间关系密切,研究肺实质含血量的改变可能揭示某些肺部疾病的病理生理过程,为相关疾病的早期诊断及临床分期提供依据,指导临床防治。肺部疾病引起肺血流量改变的机制及其研究价值肺的血液循环包括肺实质循环和支气管循环。肺实质循环为功能循环,主要参与肺内气体交换,携带氧气,同时排除二氧化碳;支气管循环为体循环,为营养循环,主要为肺
Pulmonary blood circulation changes and the occurrence of lung disease are closely related to the study of changes in the blood volume of lung parenchyma may reveal the pathophysiological process of some lung diseases for the early diagnosis of related diseases and clinical stage to provide the basis for clinical prevention and treatment. Pulmonary disease caused by pulmonary blood flow changes in the mechanism and research value of the lung blood circulation, including the lung parenchyma and bronchial circulation. The parenchyma of the lung is a functional circulation that is primarily involved in the exchange of gas in the lungs carrying oxygen while removing carbon dioxide; the bronchial circulation is the systemic circulation, the nutrient circulation, mainly the lungs