ArticleAJNR. American journal of neuroradiology2016
Inflow Jet Patterns of Unruptured Cerebral Aneurysms Based on the Flow Velocity in the Parent Artery: Evaluation Using 4D Flow MRI.
Article in AJNR. American journal of neuroradiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed, 17 citations in OpenAlex.
- Associations between middle cerebral artery tortuosity, aneurysm wall enhancement, and hemodynamics assessed by four-dimensional-flow and high-resolution magnetic resonance imaging.Neuroradiology · 2026Article
- Characterization of Maximum Wall Shear Stress Points in Unruptured Cerebral Aneurysms Using Four-dimensional Flow Magnetic Resonance Imaging.Clinical neuroradiology · 2024Article
- Automated hemodynamic assessment for cranial 4D flow MRI.Magnetic resonance imaging · 2023Article
- Aneurysmal wall enhancement and hemodynamics: pixel-level correlation between spatial distribution.Quantitative imaging in medicine and surgery · 2022Article
- Associations between haemodynamics and wall enhancement of intracranial aneurysm.Stroke and vascular neurology · 2021Article
- Large Neck and Strong Ostium Inflow as the Potential Causes for Delayed Occlusion of Unruptured Sidewall Intracranial Aneurysms Treated by Flow Diverter.AJNR. American journal of neuroradiology · 2020Article
- Identification of Vortex Cores in Cerebral Aneurysms on 4D Flow MRI.AJNR. American journal of neuroradiology · 2019Article
- Inflow hemodynamics evaluated by using four-dimensional flow magnetic resonance imaging and the size ratio of unruptured cerebral aneurysms.Neuroradiology · 2017Article
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7 authors at 1 institution in 1 country.
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Abstract
background and purposeInflow jet characteristics may be related to aneurysmal bleb formation and rupture. We investigated the visualization threshold on the basis of the flow velocity in the parent artery to classify the inflow jet patterns observed on 4D flow MR imaging. MATERIALS AND
methodsFifty-seven unruptured aneurysms (24 bifurcation and 33 sidewall aneurysms) were subjected to 4D flow MR imaging to visualize inflow streamline bundles whose velocity exceeded visualization thresholds corresponding to 60%, 75%, and 90% of the maximum flow velocity in the parent artery. The shape of the streamline bundle was determined visually, and the inflow jet patterns were classified as concentrated, diffuse, neck-limited, and unvisualized.
resultsAt the 75% threshold, bifurcation aneurysms exhibited a concentrated inflow jet pattern at the highest rate. At this threshold, the inflow jets were concentrated in 13 aneurysms (group C, 22.8%), diffuse in 18 (group D, 31.6%), neck-limited in 11 (group N, 19.3%), and unvisualized in 15 (group U, 26.3%). In 16 (28.1%) of the 57 aneurysms, the inflow jet pattern was different at various thresholds. Most inflow parameters, including the maximum inflow velocity and rate, the inflow velocity ratio, and the inflow rate ratio, were significantly higher in groups C and D than in groups N and U.
conclusionsThe inflow jet pattern may depend on the threshold applied to visualize the inflow streamlines on 4D flow MR imaging. For the classification of the inflow jet patterns on 4D flow MR imaging, the 75% threshold may be optimal among the 3 thresholds corresponding to 60%, 75%, and 90% of the maximum flow velocity in the parent artery.
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