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

Narata, Ana Paula and Obradó, Laura and Moyano, Raquel Kalé and Macho, Juan M. and Blasco, Jordi and Rueda, Antonio López and Roman, Luis San and Remollo, Sebastian and Marinelli, Claudia and Cepeda, Rosana and Fernández, Héctor and Larrabide, Ignacio (2021) Cerebral Aneurysm Occlusion at 12-Month Follow-Up After Flow-Diverter Treatment: Statistical Modeling for V&V With Real-World Data. Frontiers in Medical Technology, 3. ISSN 2673-3129

[thumbnail of pubmed-zip/versions/1/package-entries/fmedt-03-705003/fmedt-03-705003.pdf] Text
pubmed-zip/versions/1/package-entries/fmedt-03-705003/fmedt-03-705003.pdf - Published Version

Download (1MB)

Abstract

Background: Flow-Diverter (FD) porosity has been pointed as a critical factor in the occlusion of cerebral aneurysms after treatment.

Objective: Verification and Validation of computational models in terms of predictive capacity, relating FD porosity and occlusion after cerebral aneurysms treatment.

Methods: Sixty-four aneurysms, with pre-treatment and follow-up images, were considered. Patient demographics and aneurysm morphological information were collected. The computational simulation provided by ANKYRAS provided FD porosity, expansion, and mesh angle. FD occlusion was assessed and recorded from follow-up images. Multiple regression Logit and analysis of covariance (ANCOVA) models were used to model the data with both categorical and continuous models.

Results: Occlusion of the aneurysm after 12 months was affected by aneurysm morphology but not by FD mesh morphology. A Time-To-Occlusion (TTO) of 6.92 months on average was observed with an SE of 0.24 months in the aneurysm population surveyed. TTO was estimated with statistical significance from the resulting model for the data examined and was capable of explaining 92% of the data variation.

Conclusions: Porosity was found to have the most correction power when assessing TTO, proving its importance in the process of aneurysm occlusion. Still, further Verification and Validation (V&V) of treatment simulation in more extensive, multi-center, and randomized databases is required.

Item Type: Article
Subjects: STM Repository > Medical Science
Depositing User: Managing Editor
Date Deposited: 16 Nov 2022 03:59
Last Modified: 28 Oct 2024 08:15
URI: http://classical.goforpromo.com/id/eprint/1708

Actions (login required)

View Item
View Item