such as "Introduction", "Conclusion"..etc
Department of Anatomy, School of Medicine, Marmara University, Istanbul, Turkey.
It has been previously recognized that the anatomy of arterial
bifurcations influences blood flow and has a significant role in the
development of vascular disease. MATERIAL AND METHODS: In the present
study, we measured the average diameters of the internal carotid (ICA),
anterior cerebral (ACA), and middle cerebral arteries (MCA) in autopsy
cases. We also calculated the outflow to inflow area ratios for four
distinct age groups and for each gender, using 33 adult autopsies and 7
fetuses. RESULTS: The area ratios decreased with age in both male and
female samples. The decrease in the male (30%, p<0.05) was greater
than the decrease for the female (17%, p > 0.05). The average
diameter of the ACA, MCA and ICA of both female and male cases
increased up to the 25-44 age group, decreased for the 45-64 age group,
with a second increase above the age of 65. CONCLUSIONS: The decrease
in the area ratios and the pattern of changes of the dimensions of the
cerebral vessels with age are useful to examine the causal
relationships of these pathologic conditions and raises novel questions
about age and gender differences in the structure of the intracranial
Full access to text in Zentralbl Neurochir (July 2008).
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