Research Article
CTA Characteristics of the Circle of Willis and Intracranial Aneurysm in a Chinese Crowd with Family History of Stroke
Table 2
Anatomical variations in the anterior Circle of Willis.
| | Participant, | Normal circle, (%) | Prevalence of variants, | Incomplete proportion, (%) | Incomplete | Complete | Total of variants | | | | | | | | | |
| Male | 153 | 93 (60.8) | 5 | 4 | 1 | 4 | 43 | 1† | 2 | 0 | 60 | 58 (37.9) | Female | 128 | 63 (49.2) | 1 | 11 | 2 | 10 | 39 | 0 | 1 | 1 | 65 | 63 (49.2) | Total | 281 | 156 (55.5) | 6 | 15 | 3 | 14 | 82 | 1 | 3 | 1 | 125 | 121 (43.1) | value | | | | | | | | | | | | 0.057 |
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† indicates that the variation includes undesirable variation of right A1 segment.
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