I think you mean echocardiogram? ("Ectocardiogram" sounds like something they'd use in Ghostbusters.)

I have had 2 since my pulmonary embolism diagnosis - both resting, not stress. I think the procedure is similar in terms of what they're looking at. It hurts a little when they jab the ultrasound device under your rib cage to get a look at your heart from the other side. (At least the Teutonic titwillow that did mine hurt....)

It's good either way - whether they find something or not, because then at least you know what's in there. If that makes sense. I'm hoping they give me another in a month or so. For me, it is helping to measure my pulmonary hypertension, caused by the blood clots in my lungs, and a decrease shows that the clots are getting smaller. Which is a good thing! It's about the best way they can measure the clots without another full body CT scan with contrast dye. Which has its own risks.

Let us know how it goes!!