We read with great interest a recent article which was published in Academic Radiology by Maschke and colleagues (
1). The authors evaluated the value and possible benefit of conventional digital subtraction angiography (DSA) and combined C-arm computed tomography (CACT) of the pulmonary arteries in the diagnostic work-up of patients with suspected chronic thromboembolic pulmonary hypertension (CTEPH). They used Cohen’s kappa to determine the intermodality and interobserver agreement and to assess the correlation of DSA consensus (DSAcons) and CACT consensus (CACTcons) with the standard of reference (SOR) to evaluate the impact of each modality on the final diagnosis. We congratulate the authors on their research but raise concerns about the use of Cohen’s kappa to estimate the agreements.
- Maschke S.K.
- Werncke T.
- Becker L.S.
- et al.
The value of C-arm computed tomography in addition to conventional digital subtraction angiography in the diagnostic work-up of patients with suspected chronic thromboembolic pulmonary hypertension: an update of 300 patients.
Acad Radiol. 2022; 29: S1-S10
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- The value of C-arm computed tomography in addition to conventional digital subtraction angiography in the diagnostic work-up of patients with suspected chronic thromboembolic pulmonary hypertension: an update of 300 patients.Acad Radiol. 2022; 29: S1-S10
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Published online: May 20, 2023
Accepted: April 23, 2023
Received in revised form: October 18, 2022
Received: October 13, 2022
Publication stageIn Press Corrected Proof
© 2023 The Association of University Radiologists. Published by Elsevier Inc. All rights reserved.