title: Evaluation of tracheobronchial diseases: comparison of different imaging techniques.
abstract: OBJECTIVE
  To compare the clinical utility of the different imaging techniques used for the evaluation of tracheobronchial diseases.
  
  
  METHODS
  Forty-one patients with tracheobronchial diseases [tuberculosis (n = 18), bronchogenic carcinoma (n = 10), congenital abnormality (n = 3), post-operative stenosis (n = 2), and others (n = 8)] underwent chest radiography and spiral CT. Two sets of scan data were obtained: one from routine thick-section axial images and the other from thin-section axial images. Multiplanar reconstruction (MPR) and shaded surface display (SSD) images were obtained from thin-section data. Applying a 5-point scale, two observers compared chest radiography, routine CT, thin-section spiral CT, MPR and SSD imaging with regard to the detection, localization, extent, and characterization of a lesion, information on its relationship with adjacent structures, and overall information.
  
  
  RESULTS
  SSD images were the most informative with regard to the detection (3.95+/-0.31), localization (3.95+/-0.22) and extent of a lesion (3.85+/-0.42), and overall information (3.83+/-0.44), while thin-section spiral CT scans provided most information regarding its relationship with adjacent structures (3.56+/-0.50) and characterization of the lesion (3.51+/-0.61).
  
  
  CONCLUSIONS
  SSD images and thin-section spiral CT scans can provide valuable information for the evaluation of tracheobronchial disease.
authors.affiliation: Department of Radiology, Seoul National University College of Medicine and the Institute of Radiation Medicine, SNUMRC, Seoul, Korea. imjg@radcom.snu.ac.kr
authors.forename: Q
authors.initials: Q
authors.lastname: Chen
authors.forename: J M
authors.initials: JM
authors.lastname: Goo
authors.forename: J B
authors.initials: JB
authors.lastname: Seo
authors.forename: M J
authors.initials: MJ
authors.lastname: Chung
authors.forename: Y J
authors.initials: YJ
authors.lastname: Lee
authors.forename: J G
authors.initials: JG
authors.lastname: Im
mesh_terms: D001982:Bronchial Diseases / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed / Q000379:methods; D014133:Tracheal Diseases / Q000000981:diagnostic imaging*