Holding breath during radiation therapy can reduce radiation exposure to the heart

[News]

Women who have breast cancer on their left side present a particular challenge to radiation oncologists. Studies have shown that the risk of heart disease is higher in this group of women after radiation treatment because it can be difficult to ensure that a sufficient dose of radiation is delivered to the left breast while adequately shielding the heart from exposure.

More... (http://www.news-medical.net/news/20150105/Holding-breath-during-radiation-therapy-can-reduce-radiation-exposure-to-the-heart.aspx)