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Acoustique
Science des ultrasons
Science des ultrasons : Questions médicales fréquentes
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"description": "Comment les ultrasons sont-ils utilisés en diagnostic ?\nQuels types d'examens utilisent les ultrasons ?\nLes ultrasons peuvent-ils détecter des tumeurs ?\nLes ultrasons sont-ils sûrs pour les femmes enceintes ?\nPeut-on utiliser les ultrasons pour évaluer le cœur ?",
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"@type": "Question",
"name": "Comment les ultrasons sont-ils utilisés en diagnostic ?",
"position": 1,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les ultrasons permettent de visualiser les organes internes et détecter des anomalies."
}
},
{
"@type": "Question",
"name": "Quels types d'examens utilisent les ultrasons ?",
"position": 2,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les échographies abdominales, cardiaques et obstétricales sont courantes."
}
},
{
"@type": "Question",
"name": "Les ultrasons peuvent-ils détecter des tumeurs ?",
"position": 3,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, ils aident à localiser et évaluer la taille des tumeurs dans divers organes."
}
},
{
"@type": "Question",
"name": "Les ultrasons sont-ils sûrs pour les femmes enceintes ?",
"position": 4,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les ultrasons sont considérés comme sûrs et non invasifs pendant la grossesse."
}
},
{
"@type": "Question",
"name": "Peut-on utiliser les ultrasons pour évaluer le cœur ?",
"position": 5,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'échocardiographie utilise des ultrasons pour examiner la fonction cardiaque."
}
},
{
"@type": "Question",
"name": "Quels symptômes peuvent nécessiter un examen par ultrasons ?",
"position": 6,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des douleurs abdominales, des masses palpables ou des anomalies détectées à l'examen."
}
},
{
"@type": "Question",
"name": "Les ultrasons peuvent-ils aider à diagnostiquer des infections ?",
"position": 7,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, ils peuvent montrer des abcès ou des inflammations dans les tissus."
}
},
{
"@type": "Question",
"name": "Quels signes indiquent une échographie abdominale ?",
"position": 8,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des symptômes comme des nausées, vomissements ou jaunisse peuvent le justifier."
}
},
{
"@type": "Question",
"name": "Les ultrasons peuvent-ils détecter des anomalies vasculaires ?",
"position": 9,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'échographie Doppler évalue la circulation sanguine et les anomalies vasculaires."
}
},
{
"@type": "Question",
"name": "Quels symptômes cardiaques peuvent nécessiter une échocardiographie ?",
"position": 10,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des palpitations, essoufflement ou douleurs thoraciques peuvent justifier cet examen."
}
},
{
"@type": "Question",
"name": "Comment les ultrasons aident-ils à la prévention des maladies ?",
"position": 11,
"acceptedAnswer": {
"@type": "Answer",
"text": "Ils permettent un dépistage précoce des maladies, comme les cancers ou les maladies cardiaques."
}
},
{
"@type": "Question",
"name": "Les échographies peuvent-elles prévenir des complications pendant la grossesse ?",
"position": 12,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, elles surveillent le développement du fœtus et détectent des anomalies précoces."
}
},
{
"@type": "Question",
"name": "Les ultrasons peuvent-ils aider à prévenir les maladies cardiovasculaires ?",
"position": 13,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, ils évaluent les risques et détectent les problèmes cardiaques avant qu'ils ne s'aggravent."
}
},
{
"@type": "Question",
"name": "Comment les ultrasons contribuent-ils à la santé des femmes ?",
"position": 14,
"acceptedAnswer": {
"@type": "Answer",
"text": "Ils permettent de surveiller la santé reproductive et de détecter des anomalies gynécologiques."
}
},
{
"@type": "Question",
"name": "Les ultrasons peuvent-ils aider à prévenir des infections ?",
"position": 15,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, ils peuvent détecter des abcès ou des inflammations avant qu'elles ne s'aggravent."
}
},
{
"@type": "Question",
"name": "Les ultrasons sont-ils utilisés en thérapie ?",
"position": 16,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, ils sont utilisés pour traiter des douleurs, des lésions et des calculs rénaux."
}
},
{
"@type": "Question",
"name": "Comment les ultrasons aident-ils à traiter les calculs rénaux ?",
"position": 17,
"acceptedAnswer": {
"@type": "Answer",
"text": "La lithotripsie par ultrasons brise les calculs en petits morceaux pour faciliter l'élimination."
}
},
{
"@type": "Question",
"name": "Les ultrasons peuvent-ils aider à la cicatrisation des blessures ?",
"position": 18,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, ils stimulent la circulation sanguine et favorisent la régénération des tissus."
}
},
{
"@type": "Question",
"name": "Peut-on utiliser les ultrasons pour traiter des douleurs articulaires ?",
"position": 19,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, la thérapie par ultrasons peut réduire la douleur et l'inflammation dans les articulations."
}
},
{
"@type": "Question",
"name": "Les ultrasons sont-ils efficaces pour traiter les tumeurs ?",
"position": 20,
"acceptedAnswer": {
"@type": "Answer",
"text": "Ils peuvent être utilisés pour détruire certaines tumeurs par ablation ciblée."
}
},
{
"@type": "Question",
"name": "Quelles complications peuvent survenir avec les ultrasons ?",
"position": 21,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les complications sont rares, mais peuvent inclure des réactions allergiques aux gels utilisés."
}
},
{
"@type": "Question",
"name": "Les ultrasons peuvent-ils causer des douleurs ?",
"position": 22,
"acceptedAnswer": {
"@type": "Answer",
"text": "Généralement non, mais une pression excessive peut provoquer un léger inconfort."
}
},
{
"@type": "Question",
"name": "Y a-t-il des risques liés à l'échographie pendant la grossesse ?",
"position": 23,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les échographies sont considérées comme sûres, mais doivent être effectuées par des professionnels."
}
},
{
"@type": "Question",
"name": "Les ultrasons peuvent-ils endommager les tissus ?",
"position": 24,
"acceptedAnswer": {
"@type": "Answer",
"text": "À des niveaux normaux, ils ne causent pas de dommages, mais une exposition excessive est à éviter."
}
},
{
"@type": "Question",
"name": "Quelles sont les complications possibles de la lithotripsie par ultrasons ?",
"position": 25,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des saignements ou des infections peuvent survenir après le traitement des calculs rénaux."
}
},
{
"@type": "Question",
"name": "Quels facteurs augmentent le besoin d'échographies ?",
"position": 26,
"acceptedAnswer": {
"@type": "Answer",
"text": "Antécédents familiaux de maladies, symptômes persistants ou grossesse à risque."
}
},
{
"@type": "Question",
"name": "Les personnes âgées ont-elles besoin de plus d'échographies ?",
"position": 27,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, elles sont plus susceptibles de développer des maladies nécessitant un suivi par ultrasons."
}
},
{
"@type": "Question",
"name": "Les antécédents de cancer augmentent-ils le besoin d'échographies ?",
"position": 28,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, un suivi régulier par ultrasons est souvent recommandé pour détecter des récidives."
}
},
{
"@type": "Question",
"name": "Les femmes enceintes à risque ont-elles besoin d'échographies fréquentes ?",
"position": 29,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, elles nécessitent un suivi plus étroit pour surveiller le développement du fœtus."
}
},
{
"@type": "Question",
"name": "Les personnes avec des maladies cardiovasculaires doivent-elles faire des échographies ?",
"position": 30,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, elles peuvent nécessiter des échographies régulières pour surveiller leur état cardiaque."
}
}
]
}
]
}
Aim To assess the prevalence and determine the risk factors of computer vision syndrome among the general population in the Eastern region of Libya. Methods This study used a descriptive cross-section...
The anatomy of the posterior auricular artery (PAA) is highly variable and relevant in various plastic and reconstructive procedures....
The results of 55 consecutive patients who underwent head and neck computed tomography angiography (CTA) were analyzed. A total of 78 hemifaces were evaluated. The analysis has been performed in 19 ca...
Median PAA length was found to be 47.59 mm (LQ = 32.75; HQ = 56.16). The median PAA diameter (at its origin) was established at 2.55 mm (LQ = 2.29; HQ = 2.90). Moreover, the median PAA cross-sectional...
The present study demonstrated the complete anatomy of the PAA. The most frequent origin of the said artery was from the ECA, and its mean length was 45.07 mm; which did not differ between males and f...
Numerous studies discuss the features that constitute facial attractiveness. In recent years, computational research has received attention because it can examine facial features without relying on pr...
The purpose of this study was to evaluate a three-material decomposition algorithm for hepatic fat quantification using a dual-layer computed tomography (DL-CT) and MRI as reference standard on a larg...
A total of 104 patients were retrospectively included in our study, i.e., each patient had an MRI exam and a DL-CT exam in our institution within a maximum of 31 days. Four regions of interest (ROIs) ...
Correlation between MRI and CT data was excellent for all perfusion phases with ICC calculated at 0.99 for each phase. Determination coefficients R...
Multi-material decomposition in DL-CT allows quantification of hepatic fat fraction with a good correlation to MRI data....
The use of DL-CT allows for detection of hepatic steatosis. This is especially interesting as an opportunistic finding CT performed for other reasons, as early detection can help prevent or slowdown t...
• Hepatic fat fractions provided by the dual-layer CT algorithm is strongly correlated with that measured on MRI. • Dual-layer CT is accurate to detect hepatic steatosis ≥ 5%. • Dual-layer CT allows o...
This paper presents a technique for high sensitivity measurement of singlet oxygen luminescence generated during photodynamic therapy (PDT) and ultraviolet (UV) irradiation on skin. The high measureme...
Obesity, which is already pervasive throughout the world, endangers public health by raising the prevalence of metabolic disorders and making their treatment more difficult. The development of drugs t...
The continuous emergence of new severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants with multiple spike (S) protein mutations pose serious threats to current coronavirus disease 2019...
In this work, the initial steps of the mechanism of the Formose reaction (FR) is computationally studied using DFT methods. The FR has been considered to be a relevant process in the prebiotic evoluti...
In this study, mixed carbonyl and nitrous oxide complexes with Rh...
Spike is the grain-bearing organ in cereal crops, which is a key proxy indicator determining the grain yield and quality. Machine learning methods for image analysis of spike-related phenotypic traits...
In this study, we developed a non-invasive, high-throughput approach to quantitatively measuring the multitude of spike architectural traits in barley through combining X-ray computed tomography (CT) ...
This study provides an efficient, non-invasive and useful tool for dissecting barley spike architecture, which will contribute to high-throughput phenotyping and breeding for high yield in barley and ...