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Congress: ECR25
Poster Number: C-23165
Type: Poster: EPOS Radiologist (scientific)
DOI: 10.26044/ecr2025/C-23165
Authorblock: D. Marković, K. Lazarevic, S. Hasanagic, T. B. Plojović, M. R. Mitrović, J. Vukmirovic, D. Vasin, D. Mašulović; Belgrade/RS
Disclosures:
Danilo Marković: Nothing to disclose
Katarina Lazarevic: Nothing to disclose
Sanela Hasanagic: Nothing to disclose
Tarik Binasa Plojović: Nothing to disclose
Milanka Risto Mitrović: Nothing to disclose
Jelica Vukmirovic: Nothing to disclose
Dragan Vasin: Nothing to disclose
Dragan Mašulović: Nothing to disclose
Keywords: Emergency, Pulmonary vessels, Thorax, CT-Angiography, Audit and standards, Observer performance, Acute, Obstruction / Occlusion, Quality assurance
Purpose CT pulmonography is among the most common radiological exams in acute settings. Detail reporting and imagining parameters are important in pulmonary embolism management and should not be excluded despite time limit and workload. In these settings it is often necessary to inlude residents in workforce and approve their reports as final depending on the training level, but so far there is no data on this practice. We aimed to investigate whether there is a difference in the assessment of pulmonary...
Read more Methods and materials CT pulmonary angiography (CTPA) is the gold standard for diagnosing acute pulmonary embolism (PE), an emergency condition that manifests as a filling defect in the pulmonary artery (PA). The thrombus burden and the level of propagation within the PA tree are among the key indicators of right heart strain and predictors of adverse outcomes. The subjective nature of the assessment and the experience of the radiologist may affect the findings of CTPA. This retrospective study included 61 CTPAs with confirmed PE...
Read more Results A very high level of agreement was found in the assessment of PE propagation at all levels of the PA tree (trunk k=0.95, main branches k=0.92, lobar branches k=0.90, segmental branches k=0.86) and the overall thrombus burden index based on the modified Qanadli score (0.92). Similar results with a kappa index above 0.8 were found for the supplementary outcome predictors (consolidations, ground-glass opacities, pleural effusions). These results are important since they suggest high reliability of reports made by residents and...
Read more Conclusion The high level of agreement in the assessment of thrombus burden and PE propagation indicates the reliability and objectivity of CTPA regardless of the interpreter's experience.
Read more References Zhang H, Cheng Y, Chen Z, et al. Clot burden of acute pulmonary thromboembolism: comparison of two deep learning algorithms, Qanadli score, and Mastora score. Quant Imaging Med Surg. 2022;12(1):66-79. doi:10.21037/qims-21-140Furlan A, Patil A, Park B, Chang CC, Roberts MS, Bae KT. Accuracy and reproducibility of blood clot burden quantification with pulmonary CT angiography. AJR Am J Roentgenol. 2011;196(3):516-523. doi:10.2214/AJR.10.4603
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