Hounsfield’s Unit (HU) value inthe detection of thrombus involving pulmonary trunk, right and left pulmonary arteries on plain CT chest images: A retrospective study.
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2017, Vol 17, Issue 2
Abstract
Pulmonary embolism is one of the common diseases with high morbidity and mortality. It is the third most common cause of death after myocardial infarction and stroke. Because of its nonspecific clinical presentation, the condition is still difficult to diagnose clinically and is a major public health problem.Current practice of diagnosis of pulmonary thrombo embolism depends mainly on the computed tomography pulmonary angiography using iodinated contrast material. But in conditions of contraindications for usage of iodinated contrast material, the diagnostic efforts depend mainly on the conventional tools like conventional pulmonary angiography and lung perfusion scintigraphy (V/Q test). The aim of our study is to identify pulmonary embolism on Plain CT images itself using HU value difference between the pulmonary thrombus and the adjacent flowing blood. It is a retrospective study. A total of 39 cases of CTPA proven pulmonary thromboembolism (involving pulmonary trunk, its right and left branches) were included in the studywhich were done from June 2011 to June 2017 in S S Institute of medical sciences, Davangere, India.HU is assessed all along the length of pulmonary arteries using an uniform ROI of 0.3 sq.cm and observed for any sudden variation in the average HU value. On plain CT Images, there was a difference minimum of 15 HU noted between the thrombus and adjacent flowing blood in 27 out of 39 cases. Our study shows the possibility of diagnosis of pulmonary embolism in significant number of clinically suspected cases on plain CT imaging itself.
Authors and Affiliations
Dr. Kishan A Bhgwat1, Dr. Vijaya Mohana Reddy. R2
Keywords
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- EP ID EP365238
- DOI 10.9790/0853-1702140611
- Views 86
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