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High-resolution computed tomography of the lung in children with cystic fibrosis: technical factors

Frederick R Long1

  • 1Department of Radiology, Columbus Children's Hospital, Ohio State University, Columbus, Ohio 43205-2696, USA. flong@chi.osu.edu

Proceedings of the American Thoracic Society
|July 27, 2007
PubMed

Insights

High-resolution computed tomography (HRCT) requires controlled breathing techniques for accurate cystic fibrosis outcome measurement in children. Optimized HRCT methods enable early lung disease detection with reduced radiation exposure.

Area of Science:

  • Medical Imaging
  • Pediatric Pulmonology
  • Radiology

Background:

  • High-resolution computed tomography (HRCT) is crucial for monitoring cystic fibrosis (CF) progression.
  • Respiratory motion and lung volume variations can compromise HRCT accuracy in pediatric CF patients.
  • Standardized imaging techniques are needed to establish HRCT as a reliable outcome measure.

Purpose of the Study:

  • To outline optimal HRCT techniques for pediatric CF patients.
  • To enable early detection and differentiation of lung disease using HRCT.
  • To ensure HRCT can be used as a reliable outcome measure in CF research.

Main Methods:

  • Implementing end-inspiratory and expiratory imaging protocols.
  • Utilizing noninvasive controlled ventilation for infants (0-5 years) combined with raised-volume infant pulmonary function tests.
  • Employing spirometric-assisted or spirometric-triggered techniques for older children.
  • Optimizing radiation dose settings (kVp and mA) for diagnostic quality.

Main Results:

  • End-inspiratory/expiratory imaging facilitates early lung disease identification.
  • Specific ventilation techniques are suitable for different age groups (0-5 years vs. older children).
  • Optimized techniques allow for HRCT at radiation doses comparable to standard chest radiography.

Conclusions:

  • Standardized, age-appropriate HRCT techniques are essential for accurate CF outcome assessment in children.
  • These optimized methods improve the detection of early lung disease.
  • HRCT can be performed with reduced radiation doses, making it a safer screening tool.

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