“…All the patients were subjected to Fiberoptic Bronchoscopy (FOB) and imaging of the chest. The main techniques used for the imaging analysis of the chest were axial CT in seven studies [13,14,17,[19][20][21][22] and Virtual Bronchoscopy (VB) in three studies but the results were analyzed only in two of them [17,18,21]. Moreover, some other techniques of the imaging analysis were used, such as low-dose CT [16], super-high resolution CT (SHR-CT) [20], axial maximum intensity projection (MIP) images [15], coronal and sagittal multidetector CT (MDCT) [16], multiplanar reformatting (MPR) [22], volume rendering techniques (VRT) [22] and CT bronchography [14], each used once.…”