5Arakawa A, Yamashita Y, Nakayama Y, et al. Assessment of hmg volumes in pulmonary emphysema using multidetector helical CT: comparison with pulmonary function tests[J]. Comput Med Imaging Graph, 2001, 25(5): 399-404.
6Kitaguchi Y, Fujimoto K, Kubo K, et al. Characteristics of COPD phenotypes classified according to the findings of HRCT[J]. Respir Med, 2006, 100(10): 1742-52.
7Coxson HO, Mayo J, Lam S, et al. New and current clinical imaging techniques to study chronic obstructive pulmonary disease[J]. Am J Respir Crit Care Med, 2009, 180(7): 588-97.
