Bronchial Wall Measurements in Patients after Lung Transplantation: Evaluation of the Diagnostic Value for the Diagnosis of Bronchiolitis Obliterans SyndromeReportar como inadecuado




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Objectives

To prospectively evaluate quantitative airway wall measurements of thin-section CT for the diagnosis of Bronchiolitis Obliterans Syndrome BOS following lung transplantation.

Materials and Methods

In 141 CT examinations, bronchial wall thickness WT, the wall area percentage WA% calculated as the ratio of the bronchial wall area and the total area sum of bronchial wall area and bronchial lumen area and the difference of the WT on inspiration and expiration WTdiff were automatically measured in different bronchial generations. The measurements were correlated with the lung function parameters. WT and WA% in CT examinations of patients with n = 25 and without n = 116 BOS, were compared using the unpaired t-test and univariate analysis of variance, while also considering the differing lung volumes.

Results

Measurements could be performed in 2,978 bronchial generations. WT, WA%, and WTdiff did not correlate with the lung function parameters r<0.5. The WA% on inspiration was significantly greater in patients with BOS than in patients without BOS, even when considering the dependency of the lung volume on the measurements. WT on inspiration and expiration and WA% on expiration did not show significant differences between the groups.

Conclusion

WA% on inspiration was significantly greater in patients with than in those without BOS. However, WA% measurements were significantly dependent on lung volume and showed a high variability, thus not allowing the sole use of bronchial wall measurements to differentiate patients with from those without BOS.



Autor: Sabine Dettmer , Lars Peters, Claudia de Wall, Cornelia Schaefer-Prokop, Michael Schmidt, Gregor Warnecke, Jens Gottlieb, Frank W

Fuente: http://plos.srce.hr/



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