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Pediatric Radiology

, Volume 31, Issue 6, pp 413–422 | Cite as

Technique and clinical applications of full-inflation and end-exhalation controlled-ventilation chest CT in infants and young children

  • F. R. Long
  • Robert G. Castile
Original article

Abstract

Background. The inability of young children to cooperate with breath holding limits the usefulness of chest CT. Objective. To describe the technique and utility of a non-invasive method called controlled-ventilation CT (CVCT) for obtaining motion-free full-inflation and end-exhalation images of the lung in infants and young children. Materials and methods. Eighty-seven children (ages 1 week to 5 years, mean 2 years) underwent CVCT of the chest during suspended respiration at full-lung inflation and end-exhalation for a variety of clinical indications. Respiratory pauses were produced using conscious sedation and positive-pressure face-mask ventilation. Forty-one of 87 children had recordings of respiratory motion during CVCT. Results. Respiratory pause lengths increased with age (P < 0.003), were highly reproducible (r = 0.85), and lasted sufficiently long to be practical for full-inflation (24 ± 9 s) and end-exhalation (12 ± 5 s) CT scanning. Full-inflation CVCT was useful in evaluating tracheal and bronchial stenosis, bronchial wall thickening, early bronchiectasis, bronchial fistula, extent of interstitial fibrosis, and lung nodules. End-exhalation CVCT was useful in evaluating tracheomalacia and air trapping. Conclusion. Controlled-ventilation chest CT is a practical and reliable technique that promises to be clinically useful for a number of clinical indications in infants and young children.

Keywords

Respiration Young Child Clinical Indication Bronchiectasis Interstitial Fibrosis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • F. R. Long
    • 1
  • Robert G. Castile
    • 2
  1. 1.Children's Radiological Institute, Children's Hospital Columbus, 700 Children's Drive, Columbus, OH 43205–2696, USA e-mail: Flong@chi.osu.edu Tel.: + 1-6 14-7 22 22 89 Fax: + 1-6 14-7 22 23 32US
  2. 2.Section of Respiratory Medicine, Children's Hospital Columbus, 700 Children's Drive, Columbus, OH 43205–2696, USAUS

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