High calcium scores in coronary CT angiography: Effects of image post-processing on visualization and measurement of coronary lumen diameter
MetadataShow full item record
High calcium scores due to heavy calcification in the coronary artery wall present challenge to accurately diagnose coronary artery stenosis due to blooming artifacts associated with the severe calcification. This has been reported to significantly reduce specificity when compared to the diagnostic value in patients with low calcium scores. In this study, we tested a number of image post-processing approaches in a sample patient with high calcium scores (>400) with the aim of determining the appropriate technique for reduction of the effect of high calcium scores on the visualization of coronary artery wall and measurement of the coronary lumen diameter. Our results showed that the image post-processing approach, default ImageJ sharpen function improved the visualization of coronary artery with measured coronary lumen diameter similar to that measured with invasive coronary angiography. Our preliminary findings highlight the potential value of using image post-processing techniques for minimizing artifacts due to high calcium scores, although further studies with more robust data analysis and evaluation are warranted.
Showing items related by title, author, creator and subject.
Haemodynamic evaluation of coronary artery plaques : prediction of coronary atherosclerosis and disease progressionChaichana, Thanapong (2012)Coronary artery disease is the leading cause of death in advanced countries. Coronary artery disease tends to develop at locations where disturbed flow patterns occur, such as the left coronary artery. Haemodynamic change ...
Coronary CT angiography: How should physicians use it wisely and when do physicians request it appropriately?Sun, Zhonghua; Abdul Azizb, Yang; Ng, Kwan-hoong (2012)Coronary CT angiography has been increasingly used in the diagnosis of coronary artery disease due to rapid technological developments, which are reflected in the improved spatial and temporal resolution of the images. ...
Coronary ct angiography in heavily calcified coronary arteries: Improvement of coronary lumen visualization and coronary stenosis assessment with image postprocessing methodsSun, Zhonghua; Ng, C.; Xu, L.; Fan, Z.; Lei, J. (2015)To compare the diagnostic value of coronary CT angiography (CCTA) with use of 2 image postprocessing methods (CCTA_S) and (CCTA_OS) and original data (CCTA_O) for the assessment of heavily calcified plaques. Fifty patients ...