I learned about bruits during paramedic training back in 1979. We were taught to use a stethoscope to listen to the necks of older patients during physical exams. If we heard a whooshing sound we were supposed to report it to the hospital as part of our report. Little did I realize it would help alert me to a serious problem in my own life.
Some years later I began hearing my own whooshing sound in my right ear. It wasn't the quiet, barely audible noise one hears when their head is lying on a pillow in a very quiet room I could hear this thing during the day during normal activity. It was worse at night. I equated it to one of those old 1940's "B" grade jungle movies where the explorers are lost in the jungle and the cannibalistic natives are dancing and beating on their drums in preparation for an attack. At that moment the camera cuts to the woman in a pristine white blouse and jodhpurs who screams, "I can't take it anymore, STOP THE DRUMS!!!"
Okay, it's a bit melodramatic, but damn, that is one very annoying sound. Mine diminished after my third embolization, and disappeared completely after the 4th. They had achieved about 85% reduction of the fistula and that held things in check for 9 years. In '92 I had my craniotomy which totally obliterated my malformation.