Well, that were fun.
In and out in about 3.5 hours for both tests and both took way less time than advertised. The Echo-cardiogram was about 15 minutes and the MRI brain scan was about 25 minutes, both were scheduled for one hour each.
No results will be available until at least Friday, so it will be a long wait... but, the MRI tech did say that I could call the imaging clinic if my Doctor is not in on Friday, so at least we won't have to wait until Monday or Tuesday of next week.