1. Implementation of computer simulation to assess flow diversion treatment outcomes: systematic review and meta-analysis
- Author
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Yoshihiro Okamoto, Katsuhiro Tanaka, Soichiro Fujimura, Simon Tupin, Takanobu Yagi, Masaaki Shojima, Kosuke Suzuki, Yutaro Kohata, Makoto Ohta, Hitomi Anzai, Mingzi Zhang, Institute of Fluid Sciences [Sendai] (IFS), Tohoku University [Sendai], Saitama Medical Center [Saitama, Japan], Nagoya Institute of Technology (NIT), ELyTMaX, École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Tohoku University [Sendai]-Centre National de la Recherche Scientifique (CNRS)
- Subjects
medicine.medical_specialty ,medicine.medical_treatment ,0206 medical engineering ,Treatment outcome ,Pooling ,Self Expandable Metallic Stents ,Hemodynamics ,02 engineering and technology ,03 medical and health sciences ,0302 clinical medicine ,Stent deployment ,Occlusion ,Humans ,blood flow ,Medicine ,Computer Simulation ,[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] ,cardiovascular diseases ,Flow diversion ,business.industry ,[SPI.MECA.BIOM]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Biomechanics [physics.med-ph] ,flow diverter ,Stent ,Intracranial Aneurysm ,General Medicine ,020601 biomedical engineering ,Hemorrhagic Stroke ,Treatment Outcome ,Meta-analysis ,Emergency medicine ,aneurysm ,Surgery ,Stress, Mechanical ,Neurology (clinical) ,business ,Blood Flow Velocity ,030217 neurology & neurosurgery - Abstract
IntroductionDespite a decade of research into virtual stent deployment and the post-stenting aneurysmal hemodynamics, the hemodynamic factors which correlate with successful treatment remain inconclusive. We aimed to examine the differences in various post-treatment hemodynamic parameters between successfully and unsuccessfully treated cases, and to quantify the additional flow diversion achievable through stent compaction or insertion of a second stent.MethodsA systematic review and meta-analysis were performed on eligible studies published from 2000 to 2019. We first classified cases according to treatment success (aneurysm occlusion) and then calculated the pooled standardized mean differences (SMD) of each available parameter to examine their association with clinical outcomes. Any additional flow diversion arising from the two common strategies for improving the stent wire density was quantified by pooling the results of such studies.ResultsWe found that differences in the aneurysmal inflow rate (SMD −6.05, 95% CI −10.87 to −1.23, p=0.01) and energy loss (SMD −5.28, 95% CI −7.09 to −3.46, pConclusionsInflow rate and energy loss have shown promise as identifiers to discriminate between successful and unsuccessful treatment, pending future research into their diagnostic performance to establish optimal cut-off values.
- Published
- 2020