Software-based simulation for preprocedural assessment of braided stent sizing: a validation study

Abstract

OBJECTIVEThe authors sought to validate the use of a software-based simulation for preassessment of braided self-expanding stents in the treatment of wide-necked intracranial aneurysms.METHODSThis was a retrospective, observational, single-center study of 13 unruptured and ruptured intracranial aneurysms treated with braided self-expanding stents. Pre- and postprocedural angiographic studies were analyzed. ANKYRAS software was used to compare the following 3 variables: the manufacturer-given nominal length (NL), software-calculated simulated length (SL), and the actual measured length (ML) of the stent. Appropriate statistical methods were used to draw correlations among the 3 lengths.RESULTSIn this study, data obtained in 13 patients treated with braided self-expanding stents were analyzed. Data for the 3 lengths were collected for all patients. Error discrepancy was calculated by mean squared error (NL to ML −22.2; SL to ML −6.14, p < 0.05), mean absolute error (NL to ML 3.88; SL to ML −1.84, p < 0.05), and mean error (NL to ML −3.81; SL to ML −1.22, p < 0.05).CONCLUSIONSThe ML was usually less than the NL given by the manufacturer, indicating significant change in length in most cases. Computational software-based simulation for preassessment of the braided self-expanding stents is a safe and effective way for accurately calculating the change in length to aid in choosing the right-sized stent for optimal placement in complex intracranial vasculature.

Predicting flow diverter sizing using the AneuGuideTMsoftware: a validation study

“…Commercially available software with embedded geometrical deployment methods include Sim&Size (Sim&Cure, France)17 18 and Ankyras (Galgo Medical SL, Spain) 19 20. Sim&Size provides a workflow similar to that of AneuGuide TM .…”

Strut remodeling with hypercompliant balloon: A new approach to Y stent-assisted coil embolization in the treatment of complex wide-neck bifurcation aneurysms

“…To prevent this complication, a computational software-based simulation can be used to help select an appropriately sized stent. 30 Saglam et al 31 reported that intersection zone stenosis always occurs in the Y-stent configuration with laser-cut closed-cell designed stents and braided stents. Theoretically, the conformity to curved arterial geometry, wall apposition and neck coverage make the open-cell design superior to the closed design.…”

Cerebral Aneurysm Occlusion at 12-Month Follow-Up After Flow-Diverter Treatment: Statistical Modeling for V&V With Real-World Data

“…The use of computational stent sizing tools is proving its clinical value (6)(7)(8)(9). Accurate stent simulations provide additional information and a rationale for the choice of size and length of the device based on specific patient morphology.…”