SEGMENTATION OF CORONARY ARTERIES FROM X-RAY ANGIOGRAPHY SEQUENCES DURING CONTRAST FLUID PROPAGATION BY IMAGE REGISTRATION

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Citation Author(s):: Mahdieh Khanmohammadi

Kjersti Engan, Trygve Eftestøl, Charlotte Sæland, Alf Inge Larsen
Submitted by:: Mahdieh Khanmoh...
Last updated:: 20 November 2017 - 6:05am
Document Type:: Presentation Slides
Document Year:: 2017
Event:: GlobalSIP 2017
Presenters:: Mahdieh Khanmohammadi, Kjersti Engan
Paper Code:: 1417

Categories:: Medical image analysis

Gaining information about heart and coronary arteries such as estimating the flow velocity and coronary flow reserve (CFR) by only using 2D + time X-ray angiography sequence is of great interest due to its availability. We propose to segment the coronary arteries from 2D+time X-ray angiography sequences during contrast fluid propagation, by using a multi-step method based on unsharp masking followed by an iterative process of segmenting and non-rigid registration, until the alignment from the registration process is satisfactory. The proposed method is evaluated using 11 sets of angiography sequences, and the results showed 97% accuracy, 99% specificity, and 93% sensitivity in segmentation of the coronary arteries compared to more than 4000 manually marked points.