Tehran University of Medical Sciences Frontiers in Biomedical Technologies 2345-5837 11 4 2024 01 31 583 588 Hamid Dahmardeh Department of Radiology, Zahedan University of Medical Sciences, Zahedan, Iran Rahim Momivand Oral and Maxillofacial Radiology Department, Hamadan University of Medical Sciences, Hamadan, Iran Alireza Vatankhah Department of Radiology, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran Zahra Hooshanginezhad Clinical Cardiologist, Department of Cardiology, School of Medicine, Jahrom University of Medical Sciences, Jahrom, Iran Mohamad Ghazanfari Hashemi Department of Radiology, Cancer Institute, Tehran University of Medical Sciences, Tehran, Iran Mohammad Kazem Momeni Department of Internal Medicine, School of Medicine, Clinical Immunology Research of Medicine, Ali IbneAbitaleb Hospital, Zahedan, Iran Hoseinali Danesh Clinical Immunology Research Center, Department of Plastic, Reconstructive & Aesthetic Surgeon, Zahedan University of Medical Sciences, Zahedan, Iran 2023 03 08 2023 05 21 Purpose: Right ventricle failure is a well-known complication following pulmonary thromboembolism. Although Computed Tomography Pulmonary Angiography (CTPA) findings are supposed to be a surrogate for patients’ outcome, investigations based on this issue is not still elucidated. Thus, in the current study, we assessed patients’ CTPA findings and compared the result with echocardiographic findings. Materials and Methods: A total of 36 patients with proven pulmonary thromboembolism were enrolled and a comparison was made between indices in CTPA (interventricular septal deviation to the right side, inferior vena cava contrast reflux, and right ventricle diameter to left ventricle diameter ratio) and echocardiographic findings for detecting right ventricular failure. Also, the reliability of the aforementioned indices was sought for predicting mortality. Results: No significant correlation was found between CTPA indices and echocardiographic findings. The highest sensitivity and positive predictive value in CT pulmonary angiography for detecting right ventricle dysfunction were revealed to be for Right Ventricle Diameter (RVD)/Left Ventricle Diameter (LVD)>1 (63.64%), abnormal septal deviation (75.00%), respectively. Conclusion: Our results revealed that CTPA indices can reliably predict the upcoming mortality risk. On the other hand, these indices were not well-correlated with echocardiographic findings. https://fbt.tums.ac.ir/index.php/fbt/article/view/672 https://fbt.tums.ac.ir/index.php/fbt/article/download/672/335