Quelles sont les séquelles d'une ischémie cérébrale ?
Les séquelles peuvent inclure des troubles de la parole, des paralysies et des problèmes de mémoire.
Ischémie cérébraleSéquelles
#4
Comment une malformation peut-elle affecter la circulation ?
Une malformation peut entraîner des troubles circulatoires, augmentant le risque d'AVC.
Malformation vasculaireCirculation cérébrale
#5
Quelles complications d'une thrombose cérébrale ?
Les complications incluent des AVC ischémiques et des dommages cérébraux permanents.
ThromboseAccident vasculaire cérébral
Facteurs de risque
5
#1
Quels sont les facteurs de risque d'anévrisme ?
Les facteurs incluent l'hypertension, le tabagisme, et des antécédents familiaux.
AnévrismeHypertension
#2
Comment le diabète influence-t-il le risque d'AVC ?
Le diabète augmente le risque d'AVC en endommageant les vaisseaux sanguins.
DiabèteAccident vasculaire cérébral
#3
Quel rôle joue l'âge dans les maladies vasculaires ?
Le risque de maladies vasculaires augmente avec l'âge en raison de l'usure des vaisseaux.
ÂgeMaladies vasculaires
#4
Comment le stress affecte-t-il la santé vasculaire ?
Le stress chronique peut augmenter la pression artérielle et le risque de maladies cardiaques.
StressHypertension
#5
Quels comportements augmentent le risque d'AVC ?
Le tabagisme, l'inactivité physique et une mauvaise alimentation augmentent le risque d'AVC.
Comportements à risqueAccident vasculaire cérébral
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"position": 8,
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"position": 10,
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"name": "Quels examens réguliers pour le cercle de Willis ?",
"position": 12,
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{
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"position": 14,
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"position": 15,
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"@type": "Question",
"name": "Quels traitements pour un anévrisme du cercle de Willis ?",
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"position": 17,
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"name": "Quel est le rôle de la réhabilitation après un AVC ?",
"position": 18,
"acceptedAnswer": {
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{
"@type": "Question",
"name": "Quels médicaments pour l'ischémie cérébrale ?",
"position": 19,
"acceptedAnswer": {
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"text": "Les médicaments antiplaquettaires et les anticoagulants sont souvent prescrits."
}
},
{
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"name": "Comment gérer les symptômes neurologiques ?",
"position": 20,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des thérapies physiques et occupationnelles peuvent aider à gérer les symptômes neurologiques."
}
},
{
"@type": "Question",
"name": "Quelles complications d'un anévrisme non traité ?",
"position": 21,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les complications incluent la rupture, l'hémorragie cérébrale et des dommages neurologiques permanents."
}
},
{
"@type": "Question",
"name": "Quels risques après un AVC ?",
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"position": 25,
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"name": "Quels sont les facteurs de risque d'anévrisme ?",
"position": 26,
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"position": 30,
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Department of Clinical Medicine, Faculty of Health Sciences, UiT The Arctic University of Norway, Postboks 6050 Langnes, 9037 Tromsø, Norway; PET Centre, University Hospital of North Norway, 9038 Tromsø, Norway. Electronic address: lars.b.hindenes@uit.no.
Department of Radiology and Nuclear Medicine, St. Olav University Hospital, Postboks 3250 Torgarden, 7030 Trondheim, Norway; Department of Neuromedicine and Movement Science, Norwegian University of Science and Technology (NTNU), NTNU 7491 Trondheim, Norway. Electronic address: asta.haberg@ntnu.no.
Department of Clinical Medicine, Faculty of Health Sciences, UiT The Arctic University of Norway, Postboks 6050 Langnes, 9037 Tromsø, Norway; Department of Neurology, University Hospital of North Norway, 9038 Tromsø, Norway. Electronic address: ellisiv.mathiesen@uit.no.
Department of Clinical Medicine, Faculty of Health Sciences, UiT The Arctic University of Norway, Postboks 6050 Langnes, 9037 Tromsø, Norway; PET Centre, University Hospital of North Norway, 9038 Tromsø, Norway. Electronic address: torgil.vangberg@uit.no.
Department of Neurology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China. Electronic address: fl199858@126.com.
Department of Neurology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China. Electronic address: lourahan@163.com.
Department of Neurology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China. Electronic address: zhuych910@163.com.
Department of Neurology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany.
Center for Stroke Research Berlin, Berlin, Germany.
Department of Neurology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany.
Center for Stroke Research Berlin, Berlin, Germany.
Berlin Institute of Health (BIH), Berlin, Germany.
There is considerable variation in circle of Willis morphology among the general population, and these variations have been correlated with risk of aneurysms, cerebral ischemia, and other clinical eve...
To investigate the relationship between circle of Willis variants and stroke outcome....
We performed a retrospective study involving 297 patients from our institution's acute stroke academic registry. All received MRA examinations of the head upon admission for acute strokes. All imaging...
An incomplete circle of Willis was seen in 34% of subjects. There was no significant association between age, gender, hypertension, or presence of arterial stenosis and circle of Willis completeness. ...
This study suggests that an incomplete circle of Willis may be associated with a poorer prognosis for stroke patients....
The Circle of Willis (COW) is an important collateral pathway to protect the persistence of cerebral blood perfusion. This study aims to investigate the morphological variants of this significant vasc...
Quantitative analysis of intracranial vessel segments typically requires the identification of the vessels' centerlines, and a path-finding algorithm can be used to automatically detect vessel segment...
The accurate segmentation, labeling and quantification of cerebral blood vessels on MR imaging is important for basic and clinical research, yet results are not generalizable, and often require user i...
To automatically segment, label and quantify Circle of Willis (CW) arteries on Magnetic Resonance Angiography images using deep convolutional neural networks....
MRA images were pooled from three public and private databases. A total of 116 subjects (mean age 56 years ± 21 [standard deviation]; 72 women) were used to make up the training set (N=101) and the te...
Qualitative analysis showed that eICAB correctly predicted the large, medium and small arteries in 99±0.4%, 97±1% and 88±7% of all images, respectively. For quantitative assessment, the average dice s...
We have developed a quick and reliable open-source CNN-based method capable of accurately segmenting and labeling the CW in MRA images. This method is largely independent of image quality. In the futu...
Limited research has explored the effect of Circle of Willis (CoW) anatomy among blunt cerebrovascular injuries (BCVI) on outcomes. It remains unclear if current BCVI screening and scanning practices ...
This retrospective cohort study included adult traumatic BCVIs at 17 level I-IV trauma centers (08/01/2017-07/31/2021). The objectives were to compare screening criteria, scanning practices, and outco...
Of 561 BCVIs, 65% were male and the median age was 48 y/o. 17% (n = 93) had a CoW anomaly. Compared to those with normal CoW anatomy, those with CoW anomalies had significantly higher rates of any str...
While previous studies suggested universal scanning for BCVI detection, this study found patients with BCVI and CoW anomalies had some other head/neck injury not identified as BCVI scanning criteria s...
Level III, Prognostic/Epidemiological....
This study aimed to evaluate the diameter and flow changes in the circle of Willis and side branches following the use of FDSs extending from the middle cerebral artery (MCA) to the internal carotid a...
This study was conducted in a single center between January 2012 and April 2018 in patients with the anterior choroidal artery (AChoA), the posterior communicating artery (PComA), and the ICA terminal...
Fourteen patients with a total of 25 aneurysms treated with FDSs extending from MCA to ICA were evaluated. The mean aneurysm fundus size was 5.14 mm (range 1.5-22 mm). Before treatment, the anterior c...
If the AComA is patent, ipsilateral anterior circulation can be compensated through modifications in the contralateral ACA A1 segment in patients with ICA terminal segment aneurysms treated with FDSs ...
Angiographic and cadaveric studies have evidenced variations in the circle of Willis (CoW). Age-related changes in cerebral hemodynamics may be attributable to vascular variations....
The objective is to assess interdependence of completeness of CoW with age using non-invasive MRA and cerebral perfusion using arterial spin labeling (ASL)....
This single-center, prospective study segregated 189 subjects into three groups: ≤5, 5 to 18, and >18 years. Angiographic (complete CoW and vascular asymmetry index) using TOF and contrast-enhanced- (...
One hundred and six (56.08%) subjects showed complete CoW on TOF and 100 (52.91%) on CE-MRA. Anterior and posterior collateral pathways were more prevalent in the younger population. Completeness of C...
This study shows that a complete CoW is commoner in pediatrics than adults and with increasing age, the completeness of CoW decreases paralleled by decrease in cerebral and cerebellar perfusion. There...
The circle of Willis (CoW) plays a significant role in intracranial atherosclerosis (ICAS). This study investigated the relationship between different types of CoW, atherosclerosis plaque features, an...
We investigated 97 participants with AIS or transient ischemic attacks (TIA) underwent pre- and post-contrast 3T vessel wall cardiovascular magnetic resonance within 7 days of the onset of symptoms. T...
Patients with incomplete A-CoW showed a higher plaque enhancement ratio (P = 0.002), enhancement grade (P = 0.01), and normalized wall index (NWI) (P = 0.018) compared with the patients with complete ...
This study demonstrated that incomplete A-CoW was associated with enhancement grade of the culprit plaque, and incomplete symptomatic side P-CoW was associated with the presence of HT...
Studies on patients suggest an association between anatomical variations in the Circle of Willis (CoW) and intracranial aneurysms (IA), but it is unclear whether this association is present in the gen...
We included 1667 participants from a population sample with 3 T MRI time-of-flight angiography (40-84 years, 46.5% men). Saccular IAs were defined as protrusions in the intracranial arteries ≥2 mm, wh...
Participants with an incomplete CoW had an increased prevalence of IA (OR, 2.3 [95% CI 1.05-5.04]). This was mainly driven by the variant missing all three communicating arteries (OR, 4.2 [95% CI 1.7-...
The findings suggest that an incomplete CoW is associated with an increased risk of IA for adults in the general population....
In clinical practice a large number of patients with ischemic stroke have internal carotid artery (ICA) stenosis accompanied by Circle of Willis (CoW) stenosis. In the presence of carotid artery steno...
We developed a three-dimensional/zero-dimensional (3D/0D) closed-loop geometric multiscale model of the cerebral artery to quantify the hemodynamic indicators, including time-averaged wall shear stres...
Model calculations showed that for all 3D models the A1 segment of the anterior cerebral artery (ACA) or the posterior communicating artery (PCA) within the CoW exhibited a hemodynamic environment wit...
Therefore, although moderate carotid artery stenosis may not cause ischemic stroke, it may cause hemodynamic changes in the CoW, which in turn may promote CoW stenosis and cause CoW decompensation. In...
