| Home | E-Submission | Sitemap | Contact Us |  
Search
Clin Exp Emerg Med Search

CLOSE

Clin Exp Emerg Med > Accepted Articles
doi: https://doi.org/10.15441/ceem.23.113    [Accepted]
The Diagnostic Accuracy of the Hounsfield Unit Value in Pulmonary Embolism
Mümin Murat YAZICI1 , Sümeyye SEKMEN2 , Ali ÇELİK1 , Özcan YAVAŞİ3 , Nur HÜRSOY4
1Specialist of Emergency Medicine, Recep Tayyip Erdoğan University Training and Research Hospital, Department of Emergency Medicine, Rize, Turkey
2Specialist of Radiology, Recep Tayyip Erdoğan University Training and Research Hospital, Department of Radiology, Rize, Turkey
3Assist. Prof. of Emergency Medicine, Recep Tayyip Erdoğan University Training and Research Hospital, Department of Emergency Medicine, Rize, Turkey
4Assist. Prof. of Radiology, Recep Tayyip Erdoğan University Training and Research Hospital, Department of Radiology, Rize, Turkey
Correspondence  Mümin Murat YAZICI Tel: +905364971612, Email: mmuratyazici53@gmail.com
Received: August 22, 2023. Revised: December 30, 2023.  Accepted: January 3, 2024. Published online: January 29, 2024.
ABSTRACT
Objective
Pulmonary embolism (PE) a vascular disease. Computed tomography pulmonary angiography (CTPA) is the radiological imaging technique used to diagnose PE. In this study, we aimed to demonstrate the diagnostic accuracy of Hounsfield Unit (HU) value for PE based on the hypothesis that acute thrombosis causes an increase in HU value on computed tomography (CT).
Methods
This research was as a single-center, retrospective study. Patients presenting to the emergency department (ED) diagnosed with PE on CTPA were enrolled as the study group. In addition, patients admitted to the same emergency department who were not diagnosed with PE and had non-contrast CT scans were included as the control group. A receiver operating curve (ROC) was produced to the diagnostic accuracy of HU values in predicting PE.
Results
The study population (N=74) consisted of a study group (N=46) and a control group (N=28). The sensitivity and specificity of HU value for predicting PE on thoracic CT were found 61.5% and 96.4% at a value of 54.8 (Area Under the Curve (AUC):0.690) for right main pulmonary artery; 65.0% and 96.4% at a value of 55.9 (AUC:0.736) for left main pulmonary artery; 44.4% and 96.4% at a value of 62.7 (AUC:0.615) for right interlobar artery; and 60.0% and 92.9% at a value of 56.7 (AUC:0.736) for left interlobar artery.
Conclusion
HU values may exhibit high diagnostic specificity on CT, for thrombi up to the interlobar level. An HU value exceeding 54.8 up to the interlobar level may raise suspicion of the presence of PE.
Keywords: Hounsfield unit, pulmonary embolism, non-contrast thorax CT, Hounsfield unit density
TOOLS
PDF Links  PDF Links
Full text via DOI  Full text via DOI
Download Citation  Download Citation
Share:      
METRICS
0
Crossref
0
Scopus
296
View
44
Download
Editorial Office
The Korean Society of Emergency Medicine
101-3104, Brownstone Seoul, 464 Cheongpa-ro, Jung-gu, Seoul 04510, Korea
TEL: +82-31-709-0918   E-mail: office@ceemjournal.org
About |  Browse Articles |  Current Issue |  For Authors and Reviewers
Copyright © by The Korean Society of Emergency Medicine.                 Developed in M2PI