In particular, it's implicated in oxidative stress and myocardial fibrosis — an abnormal thickening of the heart valves.

醛固酮与氧化应激和心肌纤维化（心脏瓣膜异常增厚）尤其相关。

And it's thought that radiation generates reactive oxygen species in the tissue, which ultimately leads to inflammation over time, and causes myocardial fibrosis, or fibrosis of the heart muscle tissue, which makes the tissue stiffer and more restrictive.

它被认为是因为辐射会在组织中产生很多活性氧物质，随着时间推移最终导致炎症，导致心肌纤维化，或者说心脏肌肉组织的纤维化，即导致组织更加僵硬、受限。