The Association Between Bronchial Wall CT Attenuation and Spirometry in Patients with Bronchial Asthma Publication date: July 2019 Source: Academic Radiology, Volume 26, Issue 7 Author(s): Shoichiro Matsushita, Tsuneo Yamashiro, Shin Matsuoka, Kunihiro Yagihashi, Yasuo Nakajima Rationale and ObjectiveThe purpose of this study was to evaluate the correlation between generation-based bronchial wall attenuation on thin-section computed tomography (CT) scans and airflow limitation in patients with bronchial asthma.Materials and MethodsThis study included 28 bronchial asthma patients (13 men, 15 women; age range, 23–89 years) who underwent both chest CT and spirometry. On CT, the mean values of peak wall attenuation, wall area percentage, and luminal area were measured in the segmental, subsegmental, and sub-subsegmental bronchi of the right B1 and B10 bronchi. Correlations of the CT measurements with forced expiratory volume in 1 second/forced vital capacity (FEV1/FVC), percent predicted forced expiratory flow at 25%–75% of the FVC (%pred forced expiratory flow25–75), and percent predicted peak flow rate were evaluated with Spearman's rank correlation test.ResultsThe peak wall attenuation of each generation of segmental bronchi significantly correlated with the forced expiratory volume in 1 second/FVC (B1 segmental, ρ = −0.683, p < 0.0001; B1 subsegmental, ρ = −0.875, p < 0.0001; B1 sub-subsegmental, ρ = −0.926, p < 0.0001; B10 segmental, ρ = −0.811, p < 0.0001; B10 subsegmental, ρ = −0.903, p < 0.0001; B10 sub-subsegmental ρ = −0.950, p < 0.0001). Similar correlations were found between the peak wall attenuation and %pred forced expiratory flow 25–75 or percent predicted peak flow rate. Overall, the correlation coefficients were relatively high in the more peripheral bronchial generations. In all measurements, the coefficients of the peak wall attenuations were higher than those of the wall area percentage and luminal area.ConclusionPeak attenuation of the bronchial wall, particularly in the peripheral bronchi, measured on CT is a good biomarker for the severity of bronchial asthma. |
ΩτοΡινοΛαρυγγολόγος Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,00306932607174,
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Πέμπτη 4 Ιουλίου 2019
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Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,00306932607174,alsfakia@gmail.com,
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00302841026182,
00306932607174,
alsfakia@gmail.com,
Anapafseos 5 Agios Nikolaos 72100 Crete Greece,
Medicine by Alexandros G. Sfakianakis
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