Bronchoarterial Ratio on High-Resolution CT Scan of the Chest in Children Without Pulmonary Pathology

Risk Factors for Bronchiectasis in Children With Cystic Fibrosis

“…In addition, we have conservatively defined dilated airways as those with a bronchus-to-artery ratio of more than 1.0. [3][4][5] Kapur et al 20 reported a mean ratio of 0.63 (95% CI, 0.60 to 0.65) in 41 children without apparent pulmonary pathologic features and suggested that a ratio of more than 1.0 underestimates the prevalence of early disease. Thus, the prevalence of bronchiectasis in our study may underestimate the true prevalence.…”

“…20 Four children were lost to follow-up because they moved from the study area. Eleven children missed a planned CT study at an annual review but continued in the study.…”

Does failed chronic wet cough response to antibiotics predict bronchiectasis?

“…Furthermore, its results may not be able to be generalised to other settings as the children were referred to tertiary paediatric respiratory physicians and the 12-month median duration of wet cough suggests they were a high-risk group of patients. The limitations of using adult radiology criteria to diagnose bronchiectasis are well recognised by paediatricians 19. Thus, we used a definition of bronchiectasis based upon radiology findings in the presence of clinical symptoms consistent with this diagnosis.…”

“…As reported previously, the maximum diameter of the pulmonary artery and the inner luminal diameter of the adjacent bronchus were measured using electronic callipers 19. In the context of a chronic wet cough, bronchiectasis was diagnosed when the broncho-arterial ratio was larger than 0.8 with or without peribronchial thickening or lack of bronchial tapering 20…”

Automated CT Scan Scores of Bronchiectasis and Air Trapping in Cystic Fibrosis

“…The key feature of bronchiectasis on CT scanning is an enlarged airway lumen with bronchi that appear larger than the accompanying artery; however, this defi nition may underestimate the extent of airway damage. 27 Other radiographic fi ndings include the failure of the larger airways to taper while progressing to the lung periphery and the identifi cation of airways in the most peripheral areas of the lung, within 2 cm of the costal or paravertebral pleura. 28 Therefore, the num ber of visible airways, especially ones in the periphery, may be a surrogate of bronchiectasis on CT scans.…”