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BioMed Research International
Volume 2014 (2014), Article ID 470295, 10 pages
Research Article

A Single Imaging Modality in the Diagnosis, Severity, and Prognosis of Pulmonary Embolism

1Department of Pulmonology, Dicle University Medical Faculty, 21281 Diyarbakir, Turkey
2Department of Radiodiagnostics, Dicle University Medical Faculty, 21281 Diyarbakir, Turkey

Received 24 June 2014; Accepted 9 September 2014; Published 14 December 2014

Academic Editor: Martin G. Mack

Copyright © 2014 Hadice Selimoglu Sen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Introduction. This study aimed to investigate the currency of computerized tomography pulmonary angiography-based parameters as pulmonary artery obstruction index (PAOI), as well as right ventricular diameters for pulmonary embolism (PE) risk evaluation and prediction of mortality and intensive care unit (ICU) requirement. Materials and Methods. The study retrospectively enrolled 203 patients hospitalized with acute PE. PAOI was calculated according to Qanadli score. Results. Forty-three patients (23.9%) were hospitalized in the ICU. Nineteen patients (10.6%) died during the 30-day follow-up period. The optimal cutoff value of PAOI for PE 30th day mortality and ICU requirement were found as 36.5% in ROC curve analysis. The pulmonary artery systolic pressure had a significant positive correlation with right/left ventricular diameter ratio (, ), PAOI (, ), and pulmonary artery diameter (, ). The patients with PAOI values higher than 36.5% have a 5.7-times increased risk of death. Conclusion. PAOI is a fast and promising parameter for risk assessment in patients with acute PE. With greater education of clinicians in this radiological scoring, a rapid assessment for diagnosis, clinical risk evaluation, and prognosis may be possible in emergency services without the need for echocardiography.