Echo-cardiogram is use to diagnose the proper functioning of heart chambers (2-Atria, 2-
ventricles ) as well as Heart valves (Bi-cuspid and tri-cuspid). It is an ultrasound based
technology which uses electrode to check the proper blood flow from Atria to ventricles
through heart valves.
To diagnose the blockage of arteries or say blood vessels angio-graphy technique is used.
It shows widening, narrowing or blockages of blood vessels.
Full story:
https://www.quora.com/Will-an-echocardiogram-show-blocked-arteries?no_redirect=1
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