Comment diagnostique-t-on une infection virale ?

Le diagnostic repose sur des tests sanguins, des cultures virales et des analyses cliniques.

Quels tests sont utilisés pour le VIH ?

Les tests de dépistage incluent les tests ELISA et les tests de charge virale.

Les symptômes peuvent-ils indiquer un virus spécifique ?

Oui, certains symptômes comme la fièvre ou la toux peuvent orienter vers un virus particulier.

Quelle est l'importance des tests PCR ?

Les tests PCR détectent l'ADN ou l'ARN viral, permettant un diagnostic précoce et précis.

Peut-on diagnostiquer une grippe sans test ?

Oui, un médecin peut diagnostiquer la grippe par l'examen clinique et les symptômes.

Quels sont les symptômes courants des maladies virales ?

Fièvre, fatigue, douleurs musculaires, toux et maux de tête sont fréquents.

La diarrhée est-elle un symptôme viral ?

Oui, certaines infections virales, comme le rotavirus, peuvent provoquer des diarrhées.

Les éruptions cutanées sont-elles liées aux virus ?

Oui, des virus comme la varicelle peuvent provoquer des éruptions cutanées.

Comment la fatigue se manifeste-t-elle dans les infections virales ?

La fatigue peut être intense et persistante, souvent due à la réponse immunitaire.

Les symptômes varient-ils selon le virus ?

Oui, chaque virus peut provoquer un ensemble de symptômes distincts.

Comment prévenir les infections virales ?

Se laver les mains, éviter les contacts étroits et se faire vacciner sont essentiels.

Les vaccins sont-ils sûrs ?

Oui, les vaccins sont rigoureusement testés pour leur sécurité et leur efficacité.

Le port du masque aide-t-il à prévenir les virus ?

Oui, le port du masque réduit la transmission des virus respiratoires.

Quelles sont les recommandations pour les voyages ?

Se faire vacciner et éviter les foules sont recommandés lors de voyages.

L'hygiène alimentaire peut-elle prévenir les infections ?

Oui, une bonne hygiène alimentaire réduit le risque d'infections virales d'origine alimentaire.

Quels traitements sont disponibles pour les infections virales ?

Les traitements incluent des antiviraux, des soins symptomatiques et des vaccins.

Les antibiotiques sont-ils efficaces contre les virus ?

Non, les antibiotiques ne traitent que les infections bactériennes, pas virales.

Comment les antiviraux fonctionnent-ils ?

Les antiviraux inhibent la réplication virale, réduisant la gravité et la durée de l'infection.

Les vaccins préviennent-ils les maladies virales ?

Oui, les vaccins stimulent le système immunitaire pour prévenir certaines infections virales.

Quels sont les traitements pour l'hépatite virale ?

Les traitements incluent des antiviraux spécifiques et des soins de soutien.

Quelles complications peuvent survenir avec la grippe ?

Des complications comme la pneumonie et l'aggravation des maladies chroniques peuvent survenir.

Les infections virales peuvent-elles causer des maladies chroniques ?

Oui, certaines infections virales peuvent entraîner des maladies chroniques comme l'hépatite.

Quelles sont les complications du VIH ?

Le VIH peut entraîner des infections opportunistes et des cancers liés à l'immunodéficience.

Les virus peuvent-ils affecter le système nerveux ?

Oui, des virus comme le virus de la rage peuvent causer des atteintes neurologiques graves.

Quelles complications peuvent survenir après une infection par le COVID-19 ?

Des complications comme le syndrome post-COVID, des problèmes respiratoires et neurologiques peuvent survenir.

Quels sont les facteurs de risque pour les infections virales ?

Les facteurs incluent un système immunitaire affaibli, le vieillissement et le manque de vaccination.

Le stress augmente-t-il le risque d'infections virales ?

Oui, le stress peut affaiblir le système immunitaire, augmentant le risque d'infections.

Les enfants sont-ils plus à risque d'infections virales ?

Oui, les enfants ont un système immunitaire en développement, les rendant plus vulnérables.

Le tabagisme influence-t-il les infections virales ?

Oui, le tabagisme peut affaiblir les défenses immunitaires et augmenter le risque d'infections.

Les voyages augmentent-ils le risque d'infections virales ?

Oui, les voyages peuvent exposer à de nouveaux virus et augmenter le risque d'infection.

Maladies virales - Informations médicales vérifiées

Automatic landmark identification in cone-beam computed tomography.

Nov 2023

DOI: 10.1111/ocr.12642 PMID: 36811276

To present and validate an open-source fully automated landmark placement (ALICBCT) tool for cone-beam computed tomography scans.... One hundred and forty-three large and medium field of view cone-beam computed tomography (CBCT) were used to train and test a novel approach, called ALICBCT that reformulates landmark detection as a c... Our method achieved a high accuracy with an average of 1.54 ± 0.87 mm error for the 32 landmark positions with rare failures, taking an average of 4.2 second computation time to identify each landmark... The ALICBCT algorithm is a robust automatic identification tool that has been deployed for clinical and research use as an extension in the 3D Slicer platform allowing continuous updates for increased...

Cephalometry Imaging, Three-Dimensional Reproducibility of Results Anatomic Landmarks Cone-Beam Computed Tomography

Automatic Classification System for Periapical Lesions in Cone-Beam Computed Tomography.

28 Aug 2022

DOI: 10.3390/s22176481 PMID: 36080940

Imaging examinations are of remarkable importance for diagnostic support in Dentistry. Imaging techniques allow analysis of dental and maxillofacial tissues (e.g., bone, dentine, and enamel) that are ...

Cone-Beam Computed Tomography Neural Networks, Computer Tooth

Evaluation of maxillary palatal process pneumatization by cone-beam computed tomography.

09 2023

DOI: 10.1016/j.jormas.2023.101432 PMID: 36921841

The aim of this study is to investigate the pneumatization type of the palatal process (PTP) and angular and distance measurements of neighbouring structures on cone beam computed tomography (CBCT) im... 400 maxillary sinuses (MS) of 200 patients (96 female; 104 male; mean age: 43.2) were retrospectively evaluated. PTP was divided into three as types 1,2 and 3 and evaluated at distances 4, 8, 16, and ... PTP I (101, 25.3%) was the most frequent type, followed by PTP II (95, 23.8%), and the least was PTP III (4, 1%). In patients with PTP I, the alveolar ridge height in the 4 mm and 8 mm group was signi... Knowing the anatomy of the MS is very important for a successful surgical procedure in this area. Anatomy and pathology of the MS can be understood more clearly in CBCT....

Humans Male Female Adult Retrospective Studies +4 autres

Effective doses of scout projections in maxillofacial cone beam computed tomography.

05 Oct 2024

DOI: 10.1007/s00784-024-05971-1 PMID: 39367969

To assess the effective and organ/tissue equivalent radiation doses of different scout projection protocols in four CBCT units.... Optically stimulated luminescence dosimeters (OSLD) were placed in reference anatomical locations in the head and neck segments of an anthropomorphic phantom representing an average adult male. Ten re... Effective doses ranged from 0.7 µSv (Accuitomo F170 60 × 60 mm-anterior maxilla) to 6.9 µSv (Midmark 50 × 50 mm-anterior maxilla). The highest organ/tissue equivalent doses were recorded for the oral ... Despite some variability among CBCT machines and protocols, the acquisition of scout projections is a low-dose procedure. The use of scout projections to ensure an adequate position of the region of i...

Cone-Beam Computed Tomography Humans Phantoms, Imaging Radiation Dosage Male +2 autres

Human Bone Typing Using Quantitative Cone-Beam Computed Tomography.

Apr 2023

DOI: 10.1016/j.identj.2022.08.011 PMID: 36182605

Bone typing is crucial to enable the choice of a suitable implant, the surgical technique, and the evaluation of the clinical outcome. Currently, bone typing is assessed subjectively by the surgeon.... The aim of this study is to establish an automatic quantification method to determine local bone types by the use of cone-beam computed tomography (CBCT) for an observer-independent approach.... Six adult human cadaver skulls were used. The 4 generally used bone types in dental implantology and orthodontics were identified, and specific Hounsfield unit (HU) ranges (grey-scale values) were ass... Correlation analyses between the different bone tissue quantification methods to identify bone types based on numerical ranges of HU values revealed that the Pearson correlation coefficient of qCBCT w... We found that qCBCT can reproducibly and objectively assess human bone types at implant sites....

Adult Humans X-Ray Microtomography Mandible Bone Density +2 autres

Photoacoustic tomography versus cone-beam computed tomography versus micro-computed tomography: Accuracy of 3D reconstructions of human teeth.

2022

DOI: 10.1371/journal.pone.0274818 PMID: 36534651

In this in-vitro study, teeth were imaged using photoacoustic tomography (PAT), cone-beam computed tomography (CBCT), and micro-computed tomography (μ-CT). The study had aim: to identify the best wave... Nineteen human mandibular single-rooted incisors were extracted from patients with trauma or periodontitis. To determine the best wavelength for acquiring photoacoustic images, all 19 teeth were scann... The highest quality tooth images were achieved using the 680 nm wavelength, which showed the best contrast ratio. The full geometry of the dental root (μ-CT compared with PAT) could be visualized with... Images, which were acquired using PAT at 680nm showed the best contrast ration, enabling the identification of dentin, cementum and the dental pulp. No significant differences were found between the P...

Humans X-Ray Microtomography Imaging, Three-Dimensional Cone-Beam Computed Tomography Image Processing, Computer-Assisted +1 autres

Application of four-dimensional cone beam computed tomography in lung cancer radiotherapy.

17 Apr 2023

DOI: 10.1186/s13014-023-02259-8 PMID: 37069641

This study explored the application of four-dimensional cone beam computed tomography (4D CBCT) in lung cancer patients, seeking to improve the accuracy of radiotherapy and to establish a uniform prot... 4D CBCT was applied to evaluate tumor volume response (TVR), motion, and center coordinates during radiotherapy in 67 eligible individuals with lung cancer diagnoses. The differences between 4D CBCT a... TVR was observed during treatment in 41% of patients (28/67), with a mean volume reduction of 41.7% and a median time to TVR of 19 days. Tumor motion was obvious in 16 patients, with a mean value of 0... Tumor volume and motion of intrapulmonary lesions in individuals diagnosed with lung cancer varied significantly in the third week of radiotherapy. 4D CBCT may be more advantageous for isolated lesion...

Humans Cone-Beam Computed Tomography Lung Neoplasms Lung Four-Dimensional Computed Tomography +2 autres

Prevalence and Characteristics of Root Resorption Identified in Cone-Beam Computed Tomography Scans.

Feb 2023

DOI: 10.1016/j.joen.2022.11.006 PMID: 36509167

Root resorption is a destructive process that compromises tooth structure and can result in tooth loss. Often it remains asymptomatic and is an incidental finding on radiographic examinations. The pur... The study included CBCT scans of 1086 consecutive patients referred for CBCT imaging over an 18-month period. A total of 1148 scans were acquired. Data were abstracted from radiology reports, and prev... Resorption was identified in 171 patients (15.7%, 95% CI: 13.6%-17.9%) and in 249 teeth with a prevalence range of 2.6%-92.3% across specific indications. An 18.7% of the patients had 2 resorption sit... The high proportion of incidental findings of resorption detected by CBCT suggests that resorption is not recognized/detected by conventional radiography and therefore remains underdiagnosed....

Humans Root Resorption Prevalence Tooth, Impacted Molar +1 autres

Detection and characteristics of the gubernacular tract in supernumerary teeth on cone beam computed tomography.

04 2023

DOI: 10.1007/s11282-022-00636-9 PMID: 35907117

The aim of this study was to evaluate the prevalence and visualization of supernumerary teeth (ST) and imaging characteristics of their gubernacular tract (GT) using cone beam computed tomography (CBC... Presence and visualization of ST were retrospectively evaluated using 960 CBCT images. The imaging characteristics of GT were analyzed to determine various presentations of GT according to type, shape... ST were radiographically detected in 93 patients, for a prevalence of 9.7%. Premolar shaped ST were more common (p = 0.003). GT was detected in 104 (77.2%) of impacted ST and mostly found straight in ... CBCT can be used for evaluations in dental practice to provide comprehensive information about ST and their GT characteristics. Clinicians should be able to identify the characteristics of GTs on CBCT...

Humans Tooth, Supernumerary Retrospective Studies Cone-Beam Computed Tomography Tooth, Impacted +1 autres

An Overview of Cone-Beam Computed Tomography and Dental Panoramic Radiography in Dentistry in the Community.

07 Aug 2024

DOI: 10.3390/tomography10080092 PMID: 39195727

This study reviews the two most important and frequently used systems of tomography used in dentistry today. These are the dental panoramic radiograph (DPR) and cone-beam computed tomography (CBCT). T...

Humans Cone-Beam Computed Tomography Radiography, Panoramic COVID-19 SARS-CoV-2 +1 autres

Maladies virales : Questions médicales fréquentes

Termes MeSH sélectionnés :

Questions fréquentes et termes MeSH associés

Diagnostic 5

Symptômes 5

Prévention 5

Traitements 5

Complications 5

Facteurs de risque 5

Contenu validé par Dr Olivier Menir

Sous-catégories

Infections à arbovirus

Infections à virus à ADN

Infections à virus à ARN

Infections à virus lents

Infections à virus oncogènes

Infections à Adenoviridae

Infections à Circoviridae

Infections à Hepadnaviridae

Infections à Herpesviridae

Infections à Parvoviridae

Infections à polyomavirus

Infections à Poxviridae

Infections à Arenaviridae

Infections à Astroviridae

Infections à Birnaviridae

Infections à Bunyaviridae

Infections à Caliciviridae

Infections à Flaviviridae

Fièvres hémorragiques virales

Infections à Mononegavirales

Infections à Nidovirales

Infections à Orthomyxoviridae

Infections à Picornaviridae

Infections à Reoviridae

Infections à Retroviridae

Infections à Togaviridae

Infections à virus Epstein-Barr

Infections humaines à adénovirus

Infections à cytomégalovirus

Infections à roséolovirus

Infection à virus varicelle-zona

Cowpox

Variole

Vaccine

Infections à hantavirus

Fièvre à phlébotomes

Syndrome de fièvre sévère avec thrombocytopénie

Infections à flavivirus

Infections à pestivirus

Dengue

Fièvre hémorragique avec syndrome rénal

Fièvre hémorragique américaine

Fièvre hémorragique de Crimée-Congo

Fièvre hémorragique d'Omsk

Maladie de la forêt Kyasanur

Fièvre de Lassa

Fièvre jaune

Infections à Filoviridae

Infections à Paramyxoviridae

Infections à Rhabdoviridae

Infections à artérivirus

Infections à Coronaviridae

Infections à cardiovirus

Infections à entérovirus

Fièvre à tiques du Colorado

Infections à rotavirus

Infections à lentivirus

Infections à alphavirus

Infections à rubivirus

Varicelle

Zona

Infection par le virus Zika

Dengue sévère

Fièvre hémorragique à virus Ebola

Infections à avulavirus

Infections à hénipavirus

Infections à virus morbilleux

Infections à pneumovirus

Infections à respirovirus