Comparison between functional lung volume measurement and segment counting for predicting postoperative pulmonary function after pulmonary resection in lung cancer patients

Table 7 Linear regression equations used to determine the postoperative pulmonary function parameters

Parameters	Predictive equation	R²	RSD
postFVC	0.8 × FVC-0.784 × ΔFLV/FLV + 0.283	0.677	0.33859
postFEV1	0.766 × FEV1-0.694 × ΔFLV/FLV + 0.22	0.743	0.26510

FEV1, forced expiratory volume in 1 s; FLV, functional lung volume; FVC, forced vital capacity; Post, postoperative

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