Koenigkam-Santos M, Paula WD, Gompelmann D, Kauczor H, Heussel CP, Puderbach M. Endobronchial valves in severe emphysematous patients: CT evaluation of lung fissures completeness, treatment radiological response and quantitative emphysema analysis<sup>*</sup>. Radiol Bras 2013;46:15-22