A new, more accurate classification of middle cerebral artery aneurysms: computed tomography angiographic study of 1,009 consecutive cases with 1,309 middle cerebral artery aneurysms.

摘要: Background Classification of middle cerebral artery (MCA) aneurysms is sometimes difficult because the identification main MCA bifurcation, key for accurate classification aneurysms, inconsistent and somewhat subjective. Objective To use meeting point M1 M2 trunks as an objective, generally accepted, angiographically evident hallmark bifurcation more aneurysms. Methods We reviewed computed tomographic angiography data 1009 consecutive patients with 1309 The were followed proximally until their trunk at bifurcation. classified according to relative location: proximal, at, or distal further subgrouped into early cortical branch lenticulostriate extending classic 3-group a 4-group classification. Results was most common location harboring 829 (63%). 406 comprised 242 (60%) 164 (40%). found 106 (8%) origin large frontal branches simulating liable be misclassified Even though 51% 407 ruptured associated intracerebral hematoma, this did not affect Conclusion Studying angioarchitecture applying practical facilitates helping improve surgical outcome.