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KMID : 1103720150720010038
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Journal of the Korean Society of Radiology
2015 Volume.72 No. 1 p.38 ~ p.45
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Diagnostic Usefulness of Dual-Energy Computed Tomography in Evaluation of the Severity of Acute Pulmonary Thromboembolism
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Moon Sung-Min
Seon Hyun-Ju
Baek Jang-Mi
Lee Seung -Jin
Yoon Yeon-Hong
Kim Yun-Hyun
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Abstract
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Purpose: To evaluate the usefulness of dual-energy computed tomography (DECT) in severity assessment of patients with acute pulmonary thromboembolism (APTE).
Materials and Methods: We evaluated 61 patients diagnosed as APTE from 2011 to 2012 in a retrospective analysis of the severity assessment indices according to Criteria by European Society of Cardiology as well as pulmonary CT angiographic obstruction score (OS) and lung perfusion index (pulmonary perfusion defect score; DS) by DECT. The correlation between OS, DS and the severity of pulmonary thromboembolism was evaluated using logit analysis.
Results: Patients with high OS also showed significantly higher DS values (p < 0.001). There was a significant correlation between both the OS and DS values and the severity of the pulmonary thromboembolism using simple sequence logit analysis (p < 0.001). However, only the DS value showed a very high correlation with the severity of pulmonary thromboembolism using multiple sequence logit analysis.
Conclusion: DECT provides a more useful marker for the diagnosis and severity assessment of pulmonary thromboembolism by checking the degree of lung perfusion as well as determining the existence of APTE in patients with suspected pulmonary thromboembolism.
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KEYWORD
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Acute Pulmonary Thromboembolism, Dual-Energy Computed Tomography
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