Aim:Geometrical and hemodynamic factors play a major role in aneurysm growth and rupture. This study explores the interplay between different geometrical features of various types of aneurysms related to aneurysm rupture angiographically.Material and Methods:3D DSA studies were retrospectively analysed for 180 patients with ruptured sidewall (SW) and sidewall with branching vessel (SWB) aneurysms and 70 patients with ruptured endwall (EW) aneurysms, excluding anterior communicating artery aneurysms. In SW and SWB cases, relationships between maximum aneurysm depth and different geometrical features including neck diameter, parent vessel (PV) curvature angle, and diameter difference between proximal and distal parent vessel segments were explored. In EW cases, the neck diameter, branching angle, and discrepancy between daughter vessel diameters were measured and compared with aneurysm depth.Results:A narrow PV curvature angle significantly correlates with greater maximum aneurysm depth in sidewall aneurysms (p-value =0.019). PV stenosis distal to sidewall aneurysms is significantly associated with greater aneurysm depth at the time of rupture (p-value<0.001). A wider branching angle is associated with smaller aneurysm depth at the time of rupture in endwall aneurysms having daughter vessels narrower in caliber than their PV (p value=0.02). A positive significant correlation is recorded between aneurysm depth and neck width in both endwall and sidewall types (p-value <0.001). Conclusion:In conclusion, geometrical factors such as PV curvature angle, neck width, and parent vessel distal narrowing could affect the risk of growth and rupture of SW and SWB aneurysms. A wider branching angle could be considered in early rupture of EW aneurysms. Neck width could be significantly related to growth and rupture of both sidewall and endwall intracranial aneurysms.