question: I have had a problem with my balance for 16 weeks. I was told by my Doctor that I probably had a viral infection however, another Doctor recently told me that I may have a Dura puncture and if so, it is usually in the thoracic part of the Spine.should I have an MRI scan with a contrasting dye or without a dye? Should I have both my Head & Spine done together. I have a strange pulsating noise in the left inner Ear! Please advise