The light areas represent uptake of the radioactive tracer (i.e. thar be cancer!). Some light areas that can be ignored are the brain (top of the photo), heart (center), and the bladder (bottom). As you can see, there were numerous cancerous nodes in my neck, chest, and abdomen. Now, however, they're gone. Yay for science!
I will still continue with my last four chemo treatments so as to eradicate the microscopic traces of the cancer that may be lingering. Take no prisoners! Then, I'll have another scan in six months to make sure none of those pesky cancer critters came back.