during follow-up extending to 180 months , 77 patients ( 55.8 % ) remained neurologically asymptomatic , 37 patients ( 26.8 % ) developed tia 's one month to 99 months after detection of bruit , and 24 patients ( 17.4 % ) sustained mild to profound frank strokes one week to 124 months postdetection .
C0007787
tia 's
C0038454
strokes