Computed tomography (CT)
Multidetector CT was performed with a 64-slice CT scanner (Siemens
Somatom Sensation 64, Siemens, Erlangen, Germany) [11]. The
intravenous contrast agent (Iomeron 300, Bracco, Milan, Italy) was
administered, in all patients, with a power injector via a peripheral
vein, and when possible, the examination was performed with breath
holding at suspended inspiration, but in younger and noncooperative
patients, quiet breathing was tolerated. CT images were interpreted
without knowledge of the bronchoscopic findings.