Hi, I think you should see Mr Hughes before you have jaw surgery as getting any operations in the right order is important. I know my jaw surgery made my VES worse as it moved my right jaw bone too high inside ear canal (I can feel the bone). Not saying that will be so in your case. Also jaw surgery will seriously affect your jaw & neck area ( I had multiple daily physio with Therabite so could recover jaw opening to speak& eat). So do diagnostics before operations so you know what you are dealing with. I agree lack of upright scans or scans without movement is a big issue. There is an upright MRI in london & Manchester allowing movements but are rare here. I think your jaw scan will be done upright (mine were) but the machine moves, not you. they dont use contrast. Contrast helps medics see your vascular structures more clearly I believe. Hope that helps. D