Projects

Background: Knowledge on cerebrovascular geometry in terms of length, calibre, taper and tortuosity are of paramount
importance for Neurointerventionist to safely perform endovascular procedures which require placement of multiple
endoluminal devices. Till date, only limited literatures describing dimensions of segments of ICA beyond the cervical
segment are there. Present study is the single largest study till date, which evaluates the dimensions of ICA in Indian
population using 3D RA, a gold standard in assessing the carotid vasculature. Aim: To determine the normal dimension
of the segments of internal cerebral artery using three-dimensional rotational angiography (3DRA). Design: Retrospective
cross-sectional study done by reviewing 3DRA images of patients with no angiographic features of intracranial vascular
abnormalities. Results: Images of 300 patients were analyzed, 161 (53.7%) male and 139 (46.3%) female patients with
mean age of 47.2 years. The mean length and diameters of different segment of the ICA were calculated, gender and age-
based comparison was done. Male patients had larger caliber of segments of the internal cerebral artery. Length of vessel
has variation depending on age of patient however no gender-based difference in length of the segments were noted.
Conclusion: Our data regarding the normal dimensions of the segments internal carotid artery can help better plan and
execute neuroendovascular procedures