Comparison of the detection of lesions between CT and DSA: Observed in bleeding activities CT was detected more than DSA (58.5% compared to 36.5%), in aneurysms, AVFs, embolism, and in particular cases with more associated lesions: DSA detected more than XQCLVT (respectively 56.1%: 31.8%; 19.5: 2.4%; 7.3: 4.8%; 19.5%: 0%).