Hi- i had it done by Dr. Jordan in L.A. He uses ultrasound and flouroscopy and is very experienced. Unfortunatly it did not help me, but I felt confident he knew what he was doing. He injected it in several places. I would wait for Dr. D if you are going to see him anyway because he is very experienced and will probably want to do it himself anyway. It is very important to use ultrasound guidance so they can see exactly where it is going.