yea man the nuclear stress test is the best,ive wanted to take one but been putting it off. i had every other one done so far,like the ECHO CARDIOGRAM,REGULER STRESS TEST,ELECTRO CARDIOGRAM and another one but i forgot the name of it.i just got about 4 blood works done in the last month,one for my job(health insurance),one for my wifes job(health insurance)one for the new methadone clinic i just got in,and my reguler 6 month complete blood work done.all came back great,as far as the size of your HEART,u need the ECHO CARDIOGRAM to see that the best,an EX-RAY can also see it but the best is THE ECHO CARDIOGRAM,THE ECHO can see the size and shape of all your heart valves and even the main arteries around your heart and the main artery in your neck(carotid).the ECHO is a very good test,especially this day and age with the sophisticated computer set ups they got