@Elvena I understand your concern & I would recommend you speak to your rad onc. I havent got a heart condition but following my rad treatment, I make sure I have routine heart/blood tests to ensure everything is OK. I had 3 weeks of rad & as it was on my left side, I had to do DIBH (Deep Inspiration Breath Hold). This means that I had to hold my breath for up to max 25-30 sec while the rad beam was on, to fill my lungs with air which moved my heart away from my chest. This technique saves your heart from the direct radiation beam.
You do have to consider the risks & decide whats best for you your condition. With all the surgery/treatment you go through with cancer, it is so much a part of playing the odds/percentages/risks & knowing that everyone is different. Let us know what you decide & I would definitely put your question to you radiation oncologist as that is what they are trained to do. Good luck xx
