952 / 1674
What is the risk of major coronary event or heart death at
these dose levels?
Darby et al, NEJM 2013
From supplementary files:
RT at age 60 years
No cardiac risk factors
MHD
Absolute risk of RT related
death from IHD by age 80
9 Gy
1%
5 Gy
0.6%
4 Gy
0.5%
2 Gy
0.2%
If 1 risk factor for IHD
5 Gy
1.1%