Researchers discovered that ruptured intracranial aneurysms (UIAs) had distinct morphological and hemodynamic features, such as a greater size ratio and oscillatory shear index, as well as reduced wall shear stress. They also discovered that UIAs with characteristics comparable to RIAs may be more likely to rupture than those that do not. The authors previously created the Rupture Resemblance Score (RRS), a data-driven computer model that can objectively compare the morphology and hemodynamics of UIAs and RIAs. They wanted to see if RRS could help guide the management of UIAs in the clinic, especially in difficult circumstances such tiny UIAs. A novel study on the unruptured intracranial aneurysm has been released by a group of neurosurgeons from the National Institutes of Health (UIAs) Data from 3D digital subtraction angiography, computer-assisted 3D morphological analysis, and computational fluid dynamics modelling were examined. 

The study looked at 79 patients with 79 UIAs, 90% of which were smaller than 7 mm. Treatment was recommended for 45 of the UIAs, with a mean RRS of 0.24 (range 0.0–1.0). (57 percent ) The RRSs of the instances with significantly higher RRSs than the 34 cases suggested for observation (34) were significantly higher than the RRSs of the observation cases. In terms of morphology and hemodynamics, RRS is a data-driven model that compares UIAs to RIAs. RRS provides further stratification to assist in the identification of high-risk UIAs in circumstances where the UIATS-based advice is not conclusive.  

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