I advocate for Calcium CT as a widespread heart screening tool bc it has the lowest hurdle to adoption - $150, 15 mins, no doc referral and catches 80-90% of heart issues.  However, the angiogram w dye is a more comprehensive look inside the arteries and thus more accurate in diagnosing blockage - BUT can cost > $1000, is more invasive & requires a referral.  To be clear, I did both after my Calcium CT showed minimal plaque.  But 95% of the country is walking around with no scans - the HUGE win would be to get the vast majority of the population to take the simple Calcium CT scan starting at age 35 - like a mammogram for the heart.  Would save tens of thousands of livers per year!!