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A comparison of digital tomosynthesis and chest radiography in evaluating airway lesions using computed tomography as a reference
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A comparison of digital tomosynthesis and chest radiography in evaluating airway lesions using computed tomography as a reference
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Journal Article
A comparison of digital tomosynthesis and chest radiography in evaluating airway lesions using computed tomography as a reference
2016
Overview
Objectives
To compare the diagnostic performance of digital tomosynthesis (DTS) and chest radiography for detecting airway abnormalities, using computed tomography (CT) as a reference.
Materials and methods
We evaluated 161 data sets from 149 patients (91 with and 70 without airway abnormalities) who had undergone radiography, DTS, and CT to detect airway problems. Radiographs and DTS were evaluated to localize and score the severity of the airway abnormalities, and to score the image quality using CT as a reference. Receiver operating characteristics (ROC), McNemar’s test, weighted kappa, and the paired t-test were used for statistical analysis.
Results
The sensitivity of DTS was higher (reader 1, 93.51 %; reader 2, 94.29 %) than chest radiography (68.83 %; 71.43 %) in detecting airway lesions. The diagnostic accuracy of DTS (90.91 %; 94.70 %) was also significantly better than that of radiography (78.03 %; 82.58 %, all
p
< 0.05). DTS image quality was significantly better than chest radiography (1.83, 2.74;
p
< 0.05) in the results of both readers. The inter-observer agreement with respect to DTS findings was moderate and superior when compared to radiography findings.
Conclusions
DTS is a more accurate and sensitive modality than radiography for detecting airway lesions that are easily obscured by soft tissue structures in the mediastinum.
Key Points
•
Digital tomosynthesis offers new diagnostic options for airway lesions
.
•
Digital tomosynthesis is more sensitive and accurate than radiography for airway lesions
.
•
Digital tomosynthesis shows better image quality than radiography
.
•
Assessment of lesion severity, via tomosynthesis is comparable to computed tomography
.
Publisher
Springer Science and Business Media LLC,Springer Berlin Heidelberg,Springer Nature B.V
