An article that may be of interest for some ... Basically it tells that a vascular compression of the vestibulocochlear nerve may lead to different symptoms, including tinnitus. Also, an arterial loop pressing at the nerve has been identified as the cause of pulsatile tinnitus in one described case.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2793889/
Good news, it can be treated in most cases by microvascular decompression (MVD). This is how it looks like inside. You can clearly see an artery compressing the VIII cranial nerve during surgery:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2793889/figure/f19417-3/
It seems pretty logic that you can hear a pulsating tinnitus in such case.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2793889/
Good news, it can be treated in most cases by microvascular decompression (MVD). This is how it looks like inside. You can clearly see an artery compressing the VIII cranial nerve during surgery:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2793889/figure/f19417-3/
It seems pretty logic that you can hear a pulsating tinnitus in such case.