1- Sure sorry bout that
2- Both are tests to define in relative terms "cardiac risk".
In brief a THALLIUM perfusion scan is often used to define areas of reduced cardiac blood flow often due to "hardening of the arteries", while a "Sono", in this instance better termed an ECHOCARDIOGRAM is used to evaluate structural heart disease
such as bad valves, or to further categorize those who have an "enlarged heart".
3- if that was the case, I suppose he must have known the risks of running AAS at such high doses was like asking for trouble OR perhaps he elected or actually believed it was the reversible form of cardiomegaly commonly referred to as "athletes heart".
Thx for the update
Jim