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利用放射性同位素及其标记化合物,在肺脏或肺癌组织中暂时停留或积聚,用探测仪器在体表记录的方法,称之为肺扫描。肺扫描一般有灌注扫描、吸入扫描、亲肿瘤扫描三种。现分述如下:灌注肺扫描原理和方法静脉注入的肺灌注扫描剂(直径为10～50微米以上的放射性颗粒)到达肺部后,肺脏毛细血管由于扫描剂的微栓子可造成肺毛细血管和动脉前毛细血管的暂时阻塞,所以,当肺脏发生病变影响到血运时,均可使放射性颗粒的分布发生改变,而在扫描图上出现放
The use of radioisotopes and their labeled compounds, temporary retention or accumulation in the lung or lung cancer tissue, using the detection instrument on the body surface recording method, called the lung scan. Lung scans typically include three types of perfusion scans, inhalation scans, and pro-tumor scans. They are summarized as follows: Perfusion Lung Scan Principles and Methods After an intravenously injected lung perfusion scanner (radioparticles with a diameter of 10 to 50 μm or more) reaches the lungs, the pulmonary capillaries can cause pulmonary capillaries due to the microemboli of the scanning agent. Temporary occlusion of precapillary arteries and capillaries, so that when the lung lesions affect the blood supply, the distribution of radioactive particles can be changed, and appear on the scan map.