Evidence map›Paper›PMID 33067690›Full record

ArticleActa neurochirurgica2021

Quantitative analysis of flow vortices: differentiation of unruptured and ruptured medium-sized middle cerebral artery aneurysms.

K Sunderland, M Wang, A S Pandey, J Gemmete, Q Huang, A Goudge, J Jiang

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Article in Acta neurochirurgica, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Systematic Review of Radiomics and Artificial Intelligence in Intracranial Aneurysm Management.Journal of neuroimaging : official journal of the American Society of Neuroimaging
    Pooled it
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4 · The record

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5 · Who and what money

Authors and funding

7 authors.

K SunderlandBiomedical Engineering, Michigan Technological University, Houghton, MI, USA.
M WangDepartment of Management Science and Statistics, The University of Texas at San Antonio, San Antonio, TX, USA.
A S PandeyDepartment of Neurosurgery, University of Michigan, Ann Arbor, MI, USA.
J GemmeteDepartment of Radiology, University of Michigan, Ann Arbor, MI, USA.
Q HuangDepartment of Neurosurgery, Changhai Hospital, Shanghai, China.
A GoudgeBiomedical Engineering, Michigan Technological University, Houghton, MI, USA.
J JiangBiomedical Engineering, Michigan Technological University, Houghton, MI, USA. jjiang1@mtu.edu.ORCID http://orcid.org/0000-0001-8812-6246

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSurgical intervention for unruptured intracranial aneurysms (IAs) carries inherent health risks. The analysis of "patient-specific" IA geometric and computational fluid dynamics (CFD) simulated wall shear stress (WSS) data has been investigated to differentiate IAs at high and low risk of rupture to help clinical decision making. Yet, outcomes vary among studies, suggesting that novel analysis could improve rupture characterization. The authors describe a CFD analytic method to assess spatiotemporal characteristics of swirling flow vortices within IAs to improve characterization.

methodsCFD simulations were performed for 47 subjects harboring one medium-sized (4-10 mm) middle cerebral artery (MCA) aneurysm with available 3D digital subtraction angiography data. Alongside conventional indices, quantified IA flow vortex spatiotemporal characteristics were applied during statistical characterization. Statistical supervised machine learning using a support vector machine (SVM) method was run with cross-validation (100 iterations) to assess flow vortex-based metrics' strength toward rupture characterization.

resultsRelying solely on vortex indices for statistical characterization underperformed compared with established geometric characteristics (total accuracy of 0.77 vs 0.80) yet showed improvements over wall shear stress models (0.74). However, the application of vortex spatiotemporal characteristics into the combined geometric and wall shear stress parameters augmented model strength for assessing the rupture status of middle cerebral artery aneurysms (0.85).

conclusionsThis preliminary study suggests that the spatiotemporal characteristics of flow vortices within MCA aneurysms are of value to improve the differentiation of ruptured aneurysms from unruptured ones.

Indexed as

Aneurysm, RupturedIntracranial AneurysmAngiography, Digital SubtractionCerebral AngiographyHemodynamicsHumansHydrodynamicsMiddle Cerebral ArteryAneurysmComputational fluid dynamicsFlow vortexRupture status characterization

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.