It is important to remember that each test looks at different things, I mean, what would be the point of 3 tests if they look
for the same thing. When you have abnormal ECG and or
stress test,
a nuclear scan
is important to establish whether you have any necrosis (dead heart muscle). If the nuclear scan revealed that a section of heart muscle has died, then bypass or stenting is a waste of time because the blood won't be of any benefit.