title: Evaluation of obstructive airway lesions in complex congenital heart disease using composite volume-rendered images from multislice CT.
abstract: BACKGROUND
  Multislice CT (MSCT) allows high-quality volume-rendered (VR) and composite volume-rendered images.
  
  
  OBJECTIVE
  To investigate the clinical usefulness of composite VR images in the evaluation of the relationship between cardiovascular structures and the airway in children with complex congenital heart disease (CHD).
  
  
  METHODS
  Four- or 16-slice MSCT scanning was performed consecutively in 77 children (mean age 6.4 months) with CHD and respiratory symptoms, a chest radiographic abnormality, or abnormal course of the pulmonary artery on ECHO. MSCT scanning was performed during breathing or after sedation. Contrast medium (2 ml/kg) was administered through a pedal venous route or arm vein in all patients. The VR technique was used to reconstruct the cardiovascular structures and airway, and then both VR images were composed using the commercial software (VoxelPlus(2); Daejeon, Korea).
  
  
  RESULTS
  Stenoses were seen in the trachea in 1 patient and in the bronchi in 14 patients (19%). Other patients with complex CHD did not have significant airway stenoses.
  
  
  CONCLUSIONS
  Composite VR images with MSCT can provide more exact airway images in relationship to the surrounding cardiovascular structures and thus help in optimizing management strategies in treating CHD.
authors.affiliation: Department of Diagnostic Radiology, Pusan National University Hospital, Pusan National University School of Medicine, 10 1-Ga, Ami-Dong, Seo-Gu, 602-739 Busan, Korea.
authors.forename: Ki Seok
authors.initials: KS
authors.lastname: Choo
authors.forename: Hyoung Doo
authors.initials: HD
authors.lastname: Lee
authors.forename: Ji Eun
authors.initials: JE
authors.lastname: Ban
authors.forename: Si Chan
authors.initials: SC
authors.lastname: Sung
authors.forename: Yun Hee
authors.initials: YH
authors.lastname: Chang
authors.forename: Chang Won
authors.initials: CW
authors.lastname: Kim
authors.forename: Tae Hong
authors.initials: TH
authors.lastname: Lee
authors.forename: Suk
authors.initials: S
authors.lastname: Kim
authors.forename: Kun Il
authors.initials: KI
authors.lastname: Kim
mesh_terms: D000402:Airway Obstruction / Q000000981:diagnostic imaging* / Q000209:etiology; D002675:Child, Preschool; D003287:Contrast Media; D005260:Female; D006330:Heart Defects, Congenital / Q000150:complications*; D006801:Humans; D021621:Imaging, Three-Dimensional; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D003287:Contrast Media