Science des ultrasons : Questions médicales fréquentes
Nom anglais: Ultrasonics
Descriptor UI:D014465
Tree Number:H01.671.031.849
Termes MeSH sélectionnés :
Visual Fields
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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."
}
}
]
}
]
}
Tablet-based perimetry could be used to test for glaucomatous visual field defects in settings without easy access to perimeters, although few studies have assessed diagnostic accuracy of tablet-based...
This was a prospective, cross-sectional study of patients undergoing their first Humphrey Field Analyser (HFA) visual field test at a glaucoma clinic in India. Participants underwent 24-2 SITA Standar...
203 eyes from 115 participants were included, with 82 eyes classified as moderate or worse glaucoma. iPad perimetry had an area under the receiver operating characteristic (AUROC) curve of 0.64 (95% C...
iPad perimetry using the visualFields Easy application had inadequate diagnostic accuracy to be used as a screening tool for glaucoma in this South Indian population....
The benefit of protective headgear for recreational skiers is an ongoing debate in the snow sports industry, and there are a lot of opposing opinions. Due to the dynamic conditions in which winter spo...
To determine the horizontal extent of the binocular visual field (BVF) in subjects with horizontal strabismus and whether the BVF falls below the driving standard....
Adults with congenital esotropia and infantile exotropia ≤45 Prism Dioptres (PD), and subjects with orthotropia were recruited. The manifest angle of deviation was measured using a simultaneous prism ...
Forty-nine subjects were included: 10 with orthotropia, 20 with exotropia and 19 with esotropia. The horizontal extent of BVF (degrees) was significantly smaller in esotropes (122.8 ± 18.8) than in or...
The horizontal extent of BVF is significantly smaller and more variable in adults with congenital esotropia and may fall below the driving standard....
Largest study on visual fields in subjects with horizontal strabismus including an orthotropic control group who do not have diplopia and who would otherwise meet the driving standard. Visual field qu...
The findings of this study would suggest that people with an esotropia should be offered the opportunity to have a binocular visual field test before applying for a driving license. The DVLA may want ...
Visual abilities tend to vary predictably across the visual field-for simple low-level stimuli, visibility is better along the horizontal vs. vertical meridian and in the lower vs. upper visual field....
In natural environments, head movements are required to search for objects outside the field of view (FoV). Here we investigate the power of a salient target in an extended visual search array to faci...
Optic disc drusen (ODD) are calcified deposits in the prelaminar portion of the optic nerve head. Although often asymptomatic, these deposits can cause progressive visual field defects and vision loss...
This was a retrospective cohort study including 65 eyes of 43 patients with ODD from the Duke Ophthalmic Registry. All eyes had at least 12 months of follow-up and at least 3 reliable standard automat...
Subjects were followed for an average of 7.6 ± 5.3 years. The mean rate of SAP MD change was -0.23 ± 0.26 dB/year, ranging from -1.19 to 0.13 dB/year. Fifty-seven eyes (87.7%) had slow progression (sl...
Most eyes with ODD had slow rates of visual field loss over time. Age and baseline severity were significantly associated with faster rates of visual field loss....
To evaluate the association between baseline severity of visual field (VF) damage and the initial rates of VF progression with quality of life (QOL) outcomes over an extended follow-up in glaucoma....
Retrospective cohort study....
Both eyes of 167 glaucoma or suspected glaucoma patients were followed for 10.0±0.3 years. The National Eye Institute Visual Function Questionnaire (NEI-VFQ)-25 was performed at the end of the follow-...
All models demonstrated association of worse baseline severity of VF damage with worse subsequent NEI-VFQ-25 scores. Faster rates of decline in VF mean deviation of the better eye and the mean sensiti...
Baseline severity and initial rates of change of VF damage are associated with QOL outcomes over an extended follow-up. Assessment of longitudinal VF changes, especially in better eye, provides progno...
To investigate the intereye correlations between and differences in the rates of visual field (VF) progression in eyes with bilateral open-angle glaucoma....
Retrospective, longitudinal, observational study....
Patients with bilateral open-angle glaucoma with 8 or more reliable 30 - 2 standard automated perimetry tests over a period of more than 2 years were enrolled. The rate of change of the MD (MD slope) ...
One hundred eighty-eight eyes from 94 patients (56 women) were enrolled. A significant intereye correlation of the rates of visual field progression (P = .002) was found. The mean ± standard deviation...
A significant intereye correlation in the rate of VF progression was found in eyes with bilateral open-angle glaucoma. We showed the distributions and associated factors of intereye differences in VF ...
To investigate the influence of peripapillary retinoschisis (PRS) on visual field (VF) test results in patients with primary open angle glaucoma (POAG)....
Thirty eyes of 30 patients with POAG who had PRS at least once were included. All eyes were followed-up for a minimum 5 years at 4-6-month intervals. The occurrence of PRS was determined by circumpapi...
Global MD (p=0.345) and regional VF deviations (p=0.255) did not differ significantly between immediately after and just prior to PRS formation. Global MD (p=0.846) and regional VF deviations (p=0.758...
PRS has no short-term effect on the VF sensitivity. Therefore, VF test can still be useful for evaluating glaucomatous damage even in the presence of PRS compared with OCT....
Visual input is not equally processed over space. In recent years, a right visual field advantage during free walking and standing in orientation discrimination and contrast detection task was reporte...