Angiographie par résonance magnétique : Questions médicales fréquentes
Nom anglais: Magnetic Resonance Angiography
Descriptor UI:D018810
Tree Number:E01.370.370.050.500
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"description": "Quand l'ARM est-elle indiquée ?\nQuels vaisseaux peut-on visualiser avec l'ARM ?\nL'ARM peut-elle détecter des anévrismes ?\nL'ARM est-elle invasive ?\nQuels sont les avantages de l'ARM ?",
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"headline": "Symptômes sur Angiographie par résonance magnétique",
"description": "Quels symptômes peuvent nécessiter une ARM ?\nL'ARM peut-elle aider en cas d'accident vasculaire cérébral ?\nQuels signes indiquent une maladie vasculaire ?\nL'ARM peut-elle détecter des caillots sanguins ?\nQuels symptômes sont associés aux anévrismes ?",
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"description": "Comment prévenir les maladies vasculaires ?\nLe tabagisme influence-t-il les maladies vasculaires ?\nL'hypertension peut-elle être prévenue ?\nLe diabète influence-t-il les maladies vasculaires ?\nDes examens réguliers sont-ils nécessaires ?",
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"headline": "Traitements sur Angiographie par résonance magnétique",
"description": "L'ARM peut-elle guider un traitement ?\nQuels traitements suivent une ARM anormale ?\nL'ARM est-elle utilisée pour le suivi des maladies vasculaires ?\nPeut-on utiliser l'ARM pour évaluer l'efficacité d'un traitement ?\nQuels médicaments peuvent être prescrits après une ARM ?",
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"description": "Quelles complications peuvent survenir après une ARM ?\nL'ARM peut-elle causer des effets secondaires ?\nY a-t-il des risques liés à l'agent de contraste ?\nL'ARM peut-elle entraîner des complications neurologiques ?\nComment gérer les complications après une ARM ?",
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"name": "Facteurs de risque",
"headline": "Facteurs de risque sur Angiographie par résonance magnétique",
"description": "Quels sont les principaux facteurs de risque vasculaires ?\nL'âge influence-t-il le risque de maladies vasculaires ?\nLe stress est-il un facteur de risque ?\nL'hérédité joue-t-elle un rôle dans les maladies vasculaires ?\nL'alimentation influence-t-elle le risque vasculaire ?",
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"@type": "Question",
"name": "Quand l'ARM est-elle indiquée ?",
"position": 1,
"acceptedAnswer": {
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"text": "L'ARM est indiquée pour évaluer les malformations vasculaires et les obstructions."
}
},
{
"@type": "Question",
"name": "Quels vaisseaux peut-on visualiser avec l'ARM ?",
"position": 2,
"acceptedAnswer": {
"@type": "Answer",
"text": "L'ARM permet de visualiser les artères et veines cérébrales, coronaires et périphériques."
}
},
{
"@type": "Question",
"name": "L'ARM peut-elle détecter des anévrismes ?",
"position": 3,
"acceptedAnswer": {
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"text": "Oui, l'ARM est efficace pour détecter les anévrismes cérébraux et périphériques."
}
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{
"@type": "Question",
"name": "L'ARM est-elle invasive ?",
"position": 4,
"acceptedAnswer": {
"@type": "Answer",
"text": "Non, l'ARM est non invasive et n'utilise pas de cathéter pour l'imagerie."
}
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{
"@type": "Question",
"name": "Quels sont les avantages de l'ARM ?",
"position": 5,
"acceptedAnswer": {
"@type": "Answer",
"text": "L'ARM offre une excellente résolution des tissus mous et ne nécessite pas d'agent de contraste iodé."
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{
"@type": "Question",
"name": "Quels symptômes peuvent nécessiter une ARM ?",
"position": 6,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des douleurs thoraciques, des maux de tête sévères ou des troubles neurologiques peuvent nécessiter une ARM."
}
},
{
"@type": "Question",
"name": "L'ARM peut-elle aider en cas d'accident vasculaire cérébral ?",
"position": 7,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'ARM est utile pour évaluer les vaisseaux après un AVC et détecter des occlusions."
}
},
{
"@type": "Question",
"name": "Quels signes indiquent une maladie vasculaire ?",
"position": 8,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des douleurs aux jambes lors de la marche ou des changements de couleur de la peau peuvent indiquer une maladie vasculaire."
}
},
{
"@type": "Question",
"name": "L'ARM peut-elle détecter des caillots sanguins ?",
"position": 9,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'ARM est efficace pour visualiser les caillots dans les vaisseaux sanguins."
}
},
{
"@type": "Question",
"name": "Quels symptômes sont associés aux anévrismes ?",
"position": 10,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des douleurs soudaines et intenses, des nausées ou des troubles de la vision peuvent indiquer un anévrisme."
}
},
{
"@type": "Question",
"name": "Comment prévenir les maladies vasculaires ?",
"position": 11,
"acceptedAnswer": {
"@type": "Answer",
"text": "Un mode de vie sain, incluant une alimentation équilibrée et de l'exercice, aide à prévenir les maladies vasculaires."
}
},
{
"@type": "Question",
"name": "Le tabagisme influence-t-il les maladies vasculaires ?",
"position": 12,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, le tabagisme augmente le risque de maladies vasculaires et d'accidents vasculaires cérébraux."
}
},
{
"@type": "Question",
"name": "L'hypertension peut-elle être prévenue ?",
"position": 13,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, la gestion du stress, une alimentation saine et l'exercice régulier peuvent prévenir l'hypertension."
}
},
{
"@type": "Question",
"name": "Le diabète influence-t-il les maladies vasculaires ?",
"position": 14,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, le diabète non contrôlé augmente le risque de maladies vasculaires et d'AVC."
}
},
{
"@type": "Question",
"name": "Des examens réguliers sont-ils nécessaires ?",
"position": 15,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des examens réguliers aident à détecter précocement les maladies vasculaires et à prévenir les complications."
}
},
{
"@type": "Question",
"name": "L'ARM peut-elle guider un traitement ?",
"position": 16,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'ARM peut aider à planifier des interventions chirurgicales ou des traitements endovasculaires."
}
},
{
"@type": "Question",
"name": "Quels traitements suivent une ARM anormale ?",
"position": 17,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les traitements peuvent inclure des médicaments, une chirurgie ou une surveillance régulière selon le diagnostic."
}
},
{
"@type": "Question",
"name": "L'ARM est-elle utilisée pour le suivi des maladies vasculaires ?",
"position": 18,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'ARM est souvent utilisée pour surveiller l'évolution des maladies vasculaires."
}
},
{
"@type": "Question",
"name": "Peut-on utiliser l'ARM pour évaluer l'efficacité d'un traitement ?",
"position": 19,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'ARM peut être utilisée pour évaluer la réponse au traitement des maladies vasculaires."
}
},
{
"@type": "Question",
"name": "Quels médicaments peuvent être prescrits après une ARM ?",
"position": 20,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des anticoagulants ou des antiplaquettaires peuvent être prescrits selon le diagnostic."
}
},
{
"@type": "Question",
"name": "Quelles complications peuvent survenir après une ARM ?",
"position": 21,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les complications sont rares mais peuvent inclure des réactions allergiques ou des effets secondaires liés à l'agent de contraste."
}
},
{
"@type": "Question",
"name": "L'ARM peut-elle causer des effets secondaires ?",
"position": 22,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des effets secondaires comme des nausées ou des maux de tête peuvent survenir, mais sont généralement légers."
}
},
{
"@type": "Question",
"name": "Y a-t-il des risques liés à l'agent de contraste ?",
"position": 23,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des réactions allergiques ou des problèmes rénaux peuvent survenir avec certains agents de contraste."
}
},
{
"@type": "Question",
"name": "L'ARM peut-elle entraîner des complications neurologiques ?",
"position": 24,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les complications neurologiques sont très rares, mais peuvent survenir en cas de réaction à l'agent de contraste."
}
},
{
"@type": "Question",
"name": "Comment gérer les complications après une ARM ?",
"position": 25,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les complications doivent être signalées au médecin, qui peut prescrire un traitement approprié."
}
},
{
"@type": "Question",
"name": "Quels sont les principaux facteurs de risque vasculaires ?",
"position": 26,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les facteurs incluent l'hypertension, le diabète, le tabagisme et l'obésité."
}
},
{
"@type": "Question",
"name": "L'âge influence-t-il le risque de maladies vasculaires ?",
"position": 27,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, le risque de maladies vasculaires augmente avec l'âge, surtout après 50 ans."
}
},
{
"@type": "Question",
"name": "Le stress est-il un facteur de risque ?",
"position": 28,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, le stress chronique peut contribuer à l'hypertension et aux maladies cardiovasculaires."
}
},
{
"@type": "Question",
"name": "L'hérédité joue-t-elle un rôle dans les maladies vasculaires ?",
"position": 29,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des antécédents familiaux de maladies vasculaires augmentent le risque individuel."
}
},
{
"@type": "Question",
"name": "L'alimentation influence-t-elle le risque vasculaire ?",
"position": 30,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, une alimentation riche en graisses saturées et en sucres augmente le risque de maladies vasculaires."
}
}
]
}
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To evaluate the great vessels in young children with complex congenital heart disease (CHD) using non-contrast cardiovascular magnetic resonance angiography (CMRA) based on three-dimensional relaxatio...
In this retrospective study from April to July 2021, respiratory- and electrocardiogram-gated native REACT CMRA was compared to contrast-enhanced single-phase steady-state CMRA in children with CHD wh...
Thirty-six young children with complex CHD (median 4 years, interquartile range, 2-5; 20 males) were included. Native REACT CMRA was obtained successfully in all patients (mean scan time: 4:22 ± 1:44 ...
In young children with complex CHD, REACT CMRA can provide gadolinium-free high image quality, accurate vascular measurements, and equivalent diagnostic quality compared to standard contrast-enhanced ...
To develop an accelerated 3D intracranial time-of-flight (TOF) magnetic resonance angiography (MRA) sequence with wave-encoding (referred to as 3D wave-TOF) and to evaluate two variants: wave-controll...
A wave-TOF sequence was implemented on a 3 T clinical scanner. Wave-encoded and Cartesian k-space datasets from six healthy volunteers were retrospectively and prospectively undersampled with 2D-CAIPI...
Flow-related artifacts caused by the wave-encoding gradients in wave-TOF were eliminated by properly chosen parameters. Images from wave-CAIPI and CS-wave acquisitions had a higher SNR and better-pres...
3D wave-TOF improves the capability of accelerated MRA and provides better image quality at higher acceleration factors compared to traditional PI- or CS-accelerated TOF, suggesting the potential use ...
The quality of visualization in inflow magnetic resonance angiography (MRA) depends highly on the excitation state of the longitudinal magnetization obtained using specified imaging parameters. In add...
Cerebrovascular segmentation based on phase-contrast magnetic resonance angiography (PC-MRA) provides patient-specific intracranial vascular structures for neurosurgery planning. However, the vascular...
Preoperative identification of the carotid bifurcation (CB) location and plaque and stenosis distal end of the cervical internal carotid artery in relation to bony structures is essential for carotid ...
The fusion images showed vascular structures obtained by MRA, plaque observed by BB-MRI, and bone structures shown by CT. Spatial localization accuracy was verified by directly overlaying contrast-enh...
The median 2D distance CB MRA-CTA was 1 mm. CB MRA was located distal and proximal to CB CTA in 21and 29 patients, respectively. The CB location and fusion-image plaque were consistent with the intrao...
Fusion images created from MRA, BB-MRI, and noncontrast CT were feasible as an alternative to 3D-CTA for patients with contrast contraindications....
Radiographic detection of the Adamkiewicz artery (AKA) before aortic surgery helps to avoid spinal cord ischemia (SCI). We applied magnetic resonance angiography (MRA) using gadolinium enhancement (Gd...
A total of 63 patients with thoracic or thoracoabdominal aortic disease (30 with aortic dissection [AD] and 33 with aortic aneurysm) who underwent both CTA and Gd-MRA to detect AKA were evaluated. The...
The detection rates of the AKAs using Gd-MRA and CTA were higher in all 63 patients (92.1% vs. 71.4%, P = 0.003). In AD cases, the detection rates using Gd-MRA and CTA were higher in all 30 patients (...
Despite the longer examination time and more complicated imaging techniques compared to those of CTA, the high spatial resolution of slow-infusion MRA may be preferable for detecting AKA before perfor...
Digital subtraction angiography (DSA) assesses revascularization in pediatric moyamoya patients after surgery, but MRI and angiography (MRI/A) may provide comparable data....
To evaluate DSA and MRI/A with respect to clinical utility in postoperative follow-up, complication profile, and relative cost at 1 year....
All pediatric moyamoya patients who received bilateral indirect revascularization between 2011 and 2020 were retrospectively reviewed at 1 institution. Patients who underwent MRI/A-only, DSA-only, or ...
Eighty-two patients were included. At 1 year, patients who underwent either MRI/A (n = 29) or DSA (n = 40) had no significant differences in detection rate of new at-risk hypovascular territories (6.9...
Using DSA to follow moyamoya patients after indirect revascularization is generally safe but associated with a low rate of minor complications and a 6.5-fold greater financial cost relative to MRI/A. ...
We aimed to validate hyperintense vessel sign (HVS) on FLAIR imaging or posterior cerebral artery (PCA) laterality on MR angiography beyond 4.5 hours after stroke onset....
Data from acute ischemic stroke patients with internal carotid or middle cerebral artery occlusion who underwent CT perfusion imaging at baseline, follow-up MR perfusion imaging and angiography within...
Of 49 patients analyzed, four patients with artifacts were excluded and 45 were classified into high (n = 23) or low (n = 22) HVS group. High group had a smaller core volume (median 32 ml versus 109 m...
Prominent HVS in later time was associated with small core volume, persistent penumbra volume and favorable outcomes....
Chronic subdural hematoma (CSDH) is associated with postoperative recurrence. Although various factors are involved in postoperative recurrence of CSDH, blood flow, especially in the middle meningeal ...
The maximum SI of both MMAs was measured on TOF MRA images within 1 month before or after the initial surgery....
In total, 185 patients (20 with and 165 without recurrence of CSDH) were included in the analysis. The SI ratio and dementia were significant predictors of recurrence of CSDH (SI ratio: odds ratio [95...
Patients with an increased SI ratio of the affected MMA on TOF MRA who underwent surgery for CSDH were significantly more likely to experience recurrence....