Yoga and Breast Cancer Radiation

I have been wondering how to ease my anxiety during radiation. Today I found a very interesting article about this http://www.emaxhealth.com/1506/51/34310/yoga-benefits-cancer-patients.html and it has inspired me to try yoga. The yoga venue I am considering is only a half a block away. I had wanted to try it out last year before I knew about the breast cancer but now I am seeking ways to reduce stress. This might be the right thing for me. I am worried a bit because this is hot yoga and not just regular yoga. I can start and see how it feels before radiation. Maybe I'll have to transfer to a regular yoga program but at least I will have an idea before radiation begins.
The instructors at the hot yoga facility are Certified Bikram Hatha Yoga instructors. I found http://en.wikipedia.org/wiki/Bikram_Choudhury information on this type of yoga. Other types of yoga include those on this list: http://www.mindbodygreen.com/0-68/Different-Types-of-Yoga.html