Objective: To explore the clinical value of single-photon emission computed tomography(SPECT) for the evaluation of cardio-pulmonary function of perioperative patients with lung cancer. Methods: 63 patients with lung cancer received operative therapy were divided into pulmonary lobectomy group(421 cases) and whole pneumonectomy group(21 cases). Before operation, every patient of the two groups received routine detection of pulmonary function by using pulmonary function analyzer, and then their forced expira...