Just had an electrocardiogram as I have a heart murmor. The camera was put on the area of my thyroid at the bottom of my throat. I asked if she was looking at my thyroid but apparently it was seeing what my aorta was doing. Can anything wrong with the thyroid be picked up if they were primarily looking at the aorta? Because as I am taking thyroxine for underactive thyroid (also Hashimotos) it might possibly affect the heart yes? Anyone that knows more than me about this area, do help me here if you can. Thanks.