ɪnðə pˈæst, ðə vˈɜːɾɪbɹəl ˈɑːɹɾɚɹi wʌz ˈæksɛst hˈɪɹ ɪn ˈɔːɹdɚ tə kəndˈʌkt ˌæŋɡɪˈɑːɡɹəfi ʌvðə sˈɜːkəl ʌv wˈɪlɪs.
In the past, the vertebral artery was accessed here in order to conduct angiography of the circle of Willis.