We didn't even do all the scans before my MVD and a blood vessel was still found. I'd get a second opinion. My MVD did work for a year and a half. Many people show nothing on the scan and still have a compression.
Please if you have time join the TN e-mail support list. It's not very busy and you will get loads of information. When you reply to people it goes to them instead of the group unless you fix that which is irritating, but other than that it's a great list. Here is the info to join.
Send a message to:
and, in the text of your message (not
the subject line), write: SUBSCRIBE TN-L