Pediatric Radiology

, Volume 32, Issue 1, pp 8–15

CT-based virtual tracheobronchoscopy in children – comparison with axial CT and multiplanar reconstruction: preliminary results

  • Erich Sorantin
  • Bernhard Geiger
  • Franz Lindbichler
  • Ernst Eber
  • Guenther Schimpl
Original Article

DOI: 10.1007/s00247-001-0574-6

Cite this article as:
Sorantin, E., Geiger, B., Lindbichler, F. et al. Ped Radiol (2002) 32: 8. doi:10.1007/s00247-001-0574-6

Abstract

Background: 3D post-processing of spiral-CT (S-CT) data using perspective projection allows the generation of virtual views similar to endoscopy. Objective: To evaluate whether simultaneous reading of axial S-CT, multiplanar reconstruction (MPR) and virtual tracheobronchoscopy (VTB) is more precise and accurate than reading of axial S-CT and MPR alone in paediatric patients. Materials and methods: S-CT studies of 15 symptomatic and 4 normal patients were investigated. Two radiologists independently read two sets of images for airway abnormalities: first axial CT and MPR, followed by axial CT, MPR and VTB. A final decision was later made by consensus. All results were compared to fibre-optic bronchoscopy (FTB). Interobserver agreement was used as an indicator of precision for the display technique used. Results: At reading of axial S-CT and MPR an interobserver agreement of 89.5% (κ=0.776, P<0.00103) was found. Based on the consensus decision, a diagnostic accuracy of 89.5% at a sensitivity 86.6% and specificity of 100% (κ=0.776, 95% CI 0.491–1.062, P<0.00103) was achieved. At reporting on axial S-CT, MPR and VTB, all cases were classified correctly by both readers, indicating 100% accuracy, interobserver agreement, sensitivity and specificity (κ=1.00, 95% CI 1.0–1.0, P<0.000258). Conclusions: The simultaneous display of axial S-CT, MPR and VTB raises the precision, accuracy and sensitivity of radiological reports.

Computed tomography 3D imaging Tracheal diseases Endoscopy Computers Diagnostic help 

Copyright information

© Springer-Verlag 2001

Authors and Affiliations

  • Erich Sorantin
    • 1
  • Bernhard Geiger
    • 2
  • Franz Lindbichler
    • 1
  • Ernst Eber
    • 3
  • Guenther Schimpl
    • 4
  1. 1.Division of Paediatric Radiology, Department of Radiology, University Hospital Graz, Auenbruggerplatz 34, 8036 GrazAustria
  2. 2.Siemens Corporate Research Princeton, Inc., East Princeton, New JerseyUSA
  3. 3.Respiratory and Allergic Disease Division, Department of Paediatrics, University Hospital GrazAustria
  4. 4.Department of Paediatric Surgery, University Hospital GrazAustria

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