ArticleNeuroradiology2020
Atherosclerotic ICA stenosis coinciding with ICA asymmetry associated with Circle of Willis variations can mimic near-occlusion.
Article in Neuroradiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled 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.
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.
Who cites it
19 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.
- Congenital internal carotid artery hypoplasia: A systematic review.The neuroradiology journal · 2023Pooled it
- Rule-out and rule-in of carotid near-occlusion using color duplex ultrasound.Neuroradiology · 2025Article
- Anatomical study of variations in the configurations of the circle of Willis in relation to age, sex, and diameters of the components.Anatomy & cell biology · 2024Article
- The pitfalls and challenges in the diagnosis and treatment of patients with carotid near-occlusion: a narrative review.Quantitative imaging in medicine and surgery · 2024Review
- Assessments of arterial and venous phase radiodensity does not improve carotid near-occlusion diagnostics.Scientific reports · 2024Article
- Phase-contrast magnetic resonance imaging of intracranial and extracranial blood flow in carotid near-occlusion.Neuroradiology · 2024Article
- Diagnostic separation of conventional ⩾50% carotid stenosis and near-occlusion with phase-contrast MRI.European stroke journal · 2024Article
- High risk of early recurrent stroke in patients with near-occlusion with full collapse of the internal carotid artery.Neuroradiology · 2024Article
- Quantifying Carotid Stenosis: History, Current Applications, Limitations, and Potential: How Imaging Is Changing the Scenario.Life (Basel, Switzerland) · 2024Review
- Symmetry and asymmetry in atherosclerosis.International journal of occupational medicine and environmental health · 2023Review
- Symptomatic and asymptomatic carotid near-occlusions have very similar angiographic appearance on CT-angiography.Neuroradiology · 2022Article
- Evaluation of Circle of Willis variants using magnetic resonance angiography.Scientific reports · 2022Article
- Variants of the Circle of Willis as seen on magnetic resonance angiography and carotid siphon calcifications in community-dwelling older adults.The neuroradiology journal · 2022Article
- Defining carotid near-occlusion with full collapse: a pooled analysis.Neuroradiology · 2022Article
- The periprocedural and 30-day outcomes of carotid stenting in patients with carotid artery near-occlusion.Scientific reports · 2021Article
- Inner diameters of the normal carotid arteries measured using three-dimensional digital subtraction catheter angiography: a retrospective analysis.BMC neurology · 2021Article
- Near-occlusion is difficult to diagnose with common carotid ultrasound methods.Neuroradiology · 2021Article
- Diagnosing Carotid Near-Occlusion with Phase-Contrast MRI.AJNR. American journal of neuroradiology · 2021Article
- Carotid near-occlusion is often overlooked when CT angiography is assessed in routine practice.European radiology · 2020Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 2 institutions in 2 countries.
Funding
Abstract
Differentiating carotid near-occlusion (tight atherosclerotic stenosis causing distal artery size reduction) from conventional stenosis is the first step when grading carotid stenoses with NASCET method. The internal carotid artery (ICA) can be asymmetrically associated with Circle of Willis variations. When such ICA asymmetry coincides with stenosis, it may mimic near-occlusion. We studied ICA anatomical variant prevalence in 4042 consecutive CTA exams from all indications, 53 excluded due to carotid occlusion, 814 with any ≥ 50% steno-occlusive disease intra- or extracranially, 3228 without. Of the 3989 included cases, 568 (14%) had ICA asymmetry, of which 335 (59%) were from associated with Circle of Willis variations. Of 3228 patients without ≥ 50% stenosis or other steno-occlusive disease intra- and extracranially; 257 (8.0%) demonstrated ICA asymmetry associated with Circle of Willis variations, equally common among sexes and age unrelated and most frequently attributed to an ipsilateral A1 hypoplasia/aplasia, less often attributed to large contralateral posterior communicating artery. As ICA asymmetry associated with Circle of Willis variations are common, caution should be exercised diagnosing near-occlusion on asymmetry alone.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.