From the case: Myocardial contusion
short axis T2
Myocardial oedema was still present 2.5 months after the injury. This is quite a long period for oedema to still be seen. Oedema is usually resolved much quicker with myocarditis or Takotsubo cardiomyopathy. Such a long period of resolution is sometimes seen with cases of myocardial infarction. And as we can see, myocardial contusion as well (it is still unclear whether injury to the myocard comes from direct contusion of the tissue or indirectly from injury to the arteries or combination of both).