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Fig. 4A. —Results of statistical analysis of three radiologists shown
as mean (•) ± 2 SD (whiskers). A, B, and C are qualified
radiologists. Radiologist A is highly experienced in 3D building, B and C are
not. Br = conventional virtual bronchoscopy, PA = enhanced virtual
bronchoscopy using pulmonary artery. Graph shows no significant difference in
luminal diameters among three radiologists regarding limit of bronchus
diameter, which was 1.5 mm. Significant difference was found in reconstructed
diameter among radiologist A (0.75 mm), radiologist B (1.1 mm), and
radiologist C (0.9 mm). Significant differences were found in luminal
diameters between bronchus and pulmonary artery among radiologists.
