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These symptoms suggest benign positional vertigo.
Inner ear canaliths are not in alignment on positional change causing the symptoms.
The noise is also called tinnitus --often benign from inner ear causes.
The recent contrast dye intolerance likely precipitated it.
Viral infection is also likely possibility.
Should subside on its own over time.
You can use tinnitus masking device as well.Best wishes,It was my pleasure to help you today.If I have answered all your questions, Please rate my response Excellent (click on the 5th star).Please bookmark my profile for fast, reliable authentic answers!This is the link to my profile:http://www.justanswer.com/medical/expert-mysticdoc/