Radiology technicians are a great avenue in the healthcare system. You can also work on heart health by x-raying the heart in order to see how the heart is doing. There is an article on oxygen and it is below:http://www.pacificmedicalacls.com/acls- ... xygen.html
This article not only talks about oxygen and why it is so important for the heart, but for the body as well. So, when you x-ray a patient, you can look to see if they are getting enough oxygen or not by the color of the tissues in the area of the body.