Titre : Cognition

Cognition : Questions médicales fréquentes

Termes MeSH sélectionnés :

Diffusion Tensor Imaging
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"name": "Cognition", "alternateName": "Cognition", "code": { "@type": "MedicalCode", "code": "D003071", "codingSystem": "MeSH" } }, "author": [ { "@type": "Person", "name": "Nicola J Gates", "url": "https://questionsmedicales.fr/author/Nicola%20J%20Gates", "affiliation": { "@type": "Organization", "name": "Centre for Healthy Brain Ageing (CHeBA), University of New South Wales, Suite 407 185 Elizabeth Street, Sydney, NSW, Australia, 2000." } }, { "@type": "Person", "name": "Anne Ws Rutjes", "url": "https://questionsmedicales.fr/author/Anne%20Ws%20Rutjes", "affiliation": { "@type": "Organization", "name": "" } }, { "@type": "Person", "name": "Marcello Di Nisio", "url": "https://questionsmedicales.fr/author/Marcello%20Di%20Nisio", "affiliation": { "@type": "Organization", "name": "" } }, { "@type": "Person", "name": "Salman Karim", "url": "https://questionsmedicales.fr/author/Salman%20Karim", "affiliation": { "@type": "Organization", "name": "" } }, { "@type": "Person", "name": "Lee-Yee 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Cognition", "description": "Comment évaluer la cognition d'un patient ?\nQuels signes indiquent un trouble cognitif ?\nQuels examens sont recommandés pour un diagnostic ?\nQuand consulter un spécialiste de la cognition ?\nQuelles échelles sont utilisées pour le diagnostic ?", "url": "https://questionsmedicales.fr/mesh/D003071?mesh_terms=Diffusion+Tensor+Imaging&page=4#section-diagnostic" }, { "@type": "MedicalWebPage", "name": "Symptômes", "headline": "Symptômes sur Cognition", "description": "Quels sont les symptômes d'un trouble cognitif ?\nComment reconnaître une perte de mémoire ?\nQuels changements de comportement sont préoccupants ?\nLes troubles de l'attention sont-ils des symptômes ?\nQuels symptômes peuvent indiquer une démence ?", "url": "https://questionsmedicales.fr/mesh/D003071?mesh_terms=Diffusion+Tensor+Imaging&page=4#section-symptômes" }, { "@type": "MedicalWebPage", "name": "Prévention", "headline": "Prévention sur Cognition", "description": "Comment prévenir les 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troubles cognitifs augmentent-ils le risque de chutes ?\nComment les troubles cognitifs affectent-ils la vie quotidienne ?\nLes troubles cognitifs peuvent-ils mener à la démence ?\nQuelles sont les conséquences psychologiques des troubles cognitifs ?", "url": "https://questionsmedicales.fr/mesh/D003071?mesh_terms=Diffusion+Tensor+Imaging&page=4#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Cognition", "description": "Quels sont les facteurs de risque des troubles cognitifs ?\nLe diabète influence-t-il la cognition ?\nLe tabagisme est-il un facteur de risque ?\nL'isolement social est-il un facteur de risque ?\nLes traumatismes crâniens augmentent-ils le risque ?", "url": "https://questionsmedicales.fr/mesh/D003071?mesh_terms=Diffusion+Tensor+Imaging&page=4#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment évaluer la cognition d'un patient ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "Des tests neuropsychologiques et des évaluations cliniques sont utilisés." } }, { "@type": "Question", "name": "Quels signes indiquent un trouble cognitif ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Des difficultés de mémoire, de concentration ou de prise de décision peuvent indiquer un trouble." } }, { "@type": "Question", "name": "Quels examens sont recommandés pour un diagnostic ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "L'IRM cérébrale et les tests de fonction cognitive sont souvent recommandés." } }, { "@type": "Question", "name": "Quand consulter un spécialiste de la cognition ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "En cas de changements notables dans la mémoire ou le comportement, consultez un spécialiste." } }, { "@type": "Question", "name": "Quelles échelles sont utilisées pour le diagnostic ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "L'échelle de démence de Blessed et le MMSE sont couramment utilisées." } }, { "@type": "Question", "name": "Quels sont les symptômes d'un trouble cognitif ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Les symptômes incluent la confusion, l'oubli, et des difficultés à se concentrer." } }, { "@type": "Question", "name": "Comment reconnaître une perte de mémoire ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "La perte de mémoire se manifeste par l'oubli fréquent d'événements récents ou passés." } }, { "@type": "Question", "name": "Quels changements de comportement sont préoccupants ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Des changements tels que l'irritabilité ou l'apathie peuvent signaler un trouble cognitif." } }, { "@type": "Question", "name": "Les troubles de l'attention sont-ils des symptômes ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des difficultés à se concentrer ou à suivre des conversations peuvent être des symptômes." } }, { "@type": "Question", "name": "Quels symptômes peuvent indiquer une démence ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Des oublis fréquents, des difficultés à effectuer des tâches quotidiennes et des changements d'humeur." } }, { "@type": "Question", "name": "Comment prévenir les troubles cognitifs ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Une alimentation saine, l'exercice physique et des activités mentales régulières aident à prévenir." } }, { "@type": "Question", "name": "Le sommeil influence-t-il la cognition ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "Oui, un sommeil de qualité est crucial pour maintenir des fonctions cognitives optimales." } }, { "@type": "Question", "name": "L'éducation joue-t-elle un rôle dans la cognition ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Oui, un niveau d'éducation plus élevé est associé à une meilleure santé cognitive." } }, { "@type": "Question", "name": "Les activités sociales aident-elles à prévenir ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Oui, maintenir des interactions sociales régulières peut réduire le risque de déclin cognitif." } }, { "@type": "Question", "name": "Le stress affecte-t-il la cognition ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Oui, un stress chronique peut nuire aux fonctions cognitives et à la mémoire." } }, { "@type": "Question", "name": "Quels traitements existent pour les troubles cognitifs ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Les traitements incluent des médicaments, la thérapie cognitive et des exercices mentaux." } }, { "@type": "Question", "name": "Les médicaments peuvent-ils améliorer la cognition ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "Certains médicaments, comme les inhibiteurs de la cholinestérase, peuvent aider à améliorer la cognition." } }, { "@type": "Question", "name": "Comment la thérapie cognitive aide-t-elle ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Elle aide à développer des stratégies pour gérer les déficits cognitifs et améliorer la mémoire." } }, { "@type": "Question", "name": "Les exercices mentaux sont-ils bénéfiques ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les exercices mentaux réguliers peuvent renforcer les capacités cognitives et la mémoire." } }, { "@type": "Question", "name": "Quelles approches non médicamenteuses sont efficaces ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Des approches comme la stimulation cognitive et les activités sociales sont bénéfiques." } }, { "@type": "Question", "name": "Quelles complications peuvent survenir avec des troubles cognitifs ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Des complications incluent l'isolement social, la dépression et la perte d'autonomie." } }, { "@type": "Question", "name": "Les troubles cognitifs augmentent-ils le risque de chutes ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les troubles cognitifs peuvent augmenter le risque de chutes et de blessures." } }, { "@type": "Question", "name": "Comment les troubles cognitifs affectent-ils la vie quotidienne ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Ils peuvent rendre les tâches quotidiennes difficiles, affectant l'autonomie et la qualité de vie." } }, { "@type": "Question", "name": "Les troubles cognitifs peuvent-ils mener à la démence ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Oui, certains troubles cognitifs peuvent évoluer vers des formes de démence si non traités." } }, { "@type": "Question", "name": "Quelles sont les conséquences psychologiques des troubles cognitifs ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Ils peuvent entraîner de l'anxiété, de la dépression et une baisse de l'estime de soi." } }, { "@type": "Question", "name": "Quels sont les facteurs de risque des troubles cognitifs ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "L'âge avancé, les antécédents familiaux et les maladies cardiovasculaires sont des facteurs de risque." } }, { "@type": "Question", "name": "Le diabète influence-t-il la cognition ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Oui, le diabète mal contrôlé peut augmenter le risque de troubles cognitifs." } }, { "@type": "Question", "name": "Le tabagisme est-il un facteur de risque ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Oui, le tabagisme est associé à un déclin cognitif accru et à des troubles de la mémoire." } }, { "@type": "Question", "name": "L'isolement social est-il un facteur de risque ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Oui, l'isolement social peut augmenter le risque de déclin cognitif et de démence." } }, { "@type": "Question", "name": "Les traumatismes crâniens augmentent-ils le risque ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les traumatismes crâniens répétés sont liés à un risque accru de troubles cognitifs." } } ] } ] }

Sources (10000 au total)

Advanced muscle imaging in adolescent elite rowers utilizing diffusion tensor imaging: Association of imaging findings with stroke typology.

Muscular overuse injuries are a common health issue in elite athletes. Changes in the muscular microenvironment can be depicted by Diffusion Tensor Imaging (DTI). We hypothesize that the biomechanics ... Twenty-two male elite rowers (12 sweep, 10 scull rowers) with a mean age of 15.8 ± 1.2 years underwent 3-Tesla MRI of the lumbar spine 6 hours after cessation of training. Apparent diffusion coefficie... ADC values in the erector spinae and multifidus muscle were significantly higher (p = 0.039) and FA values significantly lower (p < 0.001) in sweep rowers compared to scull rowers. There was no signif... Our DTI results show that lumbar spine muscle diffusivity is higher in sweep rowers than in scull rowers. Altered muscle diffusivity is suggestive of microscopic tissue disruption and might be attribu...

Evaluating the renal mild tubulointerstitial damage and renal function in IgAN patients: a comparative study based on diffusion kurtosis imaging and diffusion tensor imaging.

To compare the performance of 3.0 T magnetic resonance diffusion kurtosis imaging (DKI) and diffusion tensor imaging (DTI) in evaluation of the degree of tubulointerstitial damage and renal function i... Both DKI and DTI were performed in 40 IgAN patients and 17 healthy volunteers. IgAN patients were divided into two groups according to tubulointerstitial lesion score: Mild injury group, n = 24; Moder... Cortical MK, Kr, Da and parenchymal Ka significantly differed among three groups (P < 0.05). Cortical MK, Kr, Ka were negatively correlated with estimated glomerular filtration rate (eGFR) (MK: r = - ... Compared with DTI, DKI was more sensitive and accurate to probe the renal function and the tubulointerstitial damage of IgAN, especially the mild tubulointerstitial damage....

Role of diffusion tensor imaging in neurological prognostication in spinal tuberculosis - A prospective pilot study.

The current study aims to explore the correlation between the Diffusion Tensor Imaging (DTI) indices and neurological status of individuals with TB spine with neurological deficit (TBSND). Further, fa... The current study included 51 individuals with TBSND undergoing posterior instrumentation and posterolateral decompression. All individuals underwent DTI scanning at the site of compression and at a n... The FA values at the compressed segment were significantly lower while the ADC values were significantly higher when compared with the non-compressed levels. Pre-operative motor and total neurological... Higher FA indices along with lower age constitute independent predictors for faster neurological recovery following decompression. FA values correlate with the neurological status of individuals with ...

Diffusion Tensor Imaging in Boys With Adrenoleukodystrophy: Identification of Cerebral Disease and Association With Neurocognitive Outcomes.

Childhood cerebral adrenoleukodystrophy (C-ALD) is a severe inflammatory demyelinating disease that must be treated at an early stage to prevent permanent brain injury and neurocognitive decline. In s... In this retrospective cohort study, we analyzed high-resolution anatomical MRI, DTI, and neurocognitive assessments from boys with C-ALD undergoing HCT at the University of Minnesota between 2011 and ... Among patients with NL-ALD (n = 14), stable or increasing FA, stable AD, and stable or decreasing RD and MD were generally observed during the 1-year study period across all ROIs. In comparison, patie... DTI was sensitive to lesion presence and severity as well as clinical neurocognitive effects of C-ALD. DTI metrics quantify C-ALD even at an early stage....

A systematic review of repeatability and reproducibility studies of diffusion tensor imaging of cervical spinal cord.

Diffusion tensor imaging (DTI) techniques are being studied as a possible diagnostic and predictive tool for the evaluation of cervical spinal cord disease. This systematic review aims to evaluate the... A search in the PubMed, Scopus, Web of Science and Ovid electronic databases was conducted for articles published between January 1990 and February 2022 that related to the repeatability and reproduci... A total of 11 studies were included and assessed for different characteristics, including sample size,(3-34) re-test time interval (<1 h to >3 months), test-retest reproducibility scores and acquisiti... This study revealed that the application of DTI and its related measures in a clinical setting in the assessment of cervical spinal cord changes is feasible and reproducible. However, cervical spinal ... DTI with its parametric maps provide broad evaluation of the tissue structure of axonal white matter and are being studied as a possible diagnostic and predictive tool for the assessment of cervical s...

Reproducibility of automated calculation technique for diffusion tensor image analysis along the perivascular space.

The method of diffusion tensor image analysis along the perivascular space (DTI-ALPS) was gathering attention to evaluate the brain's glymphatic function or interstitial fluid dynamics. However, to th... This study included 23 participants, including 2 with Alzheimer's disease, 15 with mild cognitive impairment, and 6 with cognitive normals. Scan and rescan data of diffusion magnetic resonance images ... The absolute difference in ALPS-index values between scan and rescan was larger in the ALPS index than in the vALPS index by approximately 0.6% as the relative difference. Cohen's d for the left and r... The vALPS index based on DTI-ALPS maintaining tensor vector orientation information has higher reproducibility than the ALPS index. This result encourages a multisite study on the ALPS index with a la...

The comparison of diffusion tensor imaging in human hearts between 1.5 T and 3.0 T.

The aim was to compare the diffusion tensor imaging (DTI) indices derived from human hearts between 1.5 T and 3.0 T scanners. Additionally, the reproducibility of DTI indices was assessed between 1.5 ... A total of 18 ex-vivo hearts were derived from patients who underwent heart transplantation. The DTI schemes were performed at 1.5 T and 3.0 T, respectively. Then, the same slices from each ex-vivo he... No significant differences (all P > 0.05) were found in the DTI indices between 1.5 T and 3.0 T scanners. Interestingly, the ICC of all DTI indices was relatively lower with a low b-value. The reprodu... The DTI indices of ex-vivo human hearts between 1.5 T and 3.0 T scanners had no significant differences. The consistency of DTI indices needed caution using a low b-value with different field strength...

A diffusion tensor imaging study in schizophrenia patients with clozapine induced obsessive compulsive symptoms.

The aim of this study was to evaluate brain connectivity by diffusion tensor imaging (DTI) in schizophrenia patients with clozapine-induced obsessive compulsive symptoms (OCS).... Eighteen schizophrenia patients, nine of which had clozapine-induced OCS (Clz-OCS (+)), 9 without OCS (Clz-OCS (-)) and 9 healthy controls were included. Psychopathology was evaluated with Positive an... Tract-Based Spatial Statistics based comparison of DTI revealed lower fractional anisotropy in the genu of corpus callosum (CC), right cingulum, left frontal white matter (WM) in the Clz-OCS (+) group... WM integrity in several pathways such as cortico-striato-thalamo-cortical circuitry and orbito-frontal tracts seems to be affected differently in patients with Clz-OCS (+). Different neuroplastic effe...

Diffusion tensor imaging studies on subjects with suicidal thoughts and behaviors: A descriptive literature review.

Globally, suicide represents the second leading cause of death in young people aged 15-29 years for both sexes, after traffic accidents. Suicide occurs not only in high-income countries, in high-incom... This review was conducted on studies focused on white matter alterations in people who have attempted or thought about suicide. We searched PubMed and Scopus databases and screened references of inclu... White matter alterations in suicidal behaviors were found in the prefrontal cortex, orbitofrontal cortex, internal capsule, corpus callosum, and default mode networks, which are critical cerebral area... White matter alteration in cerebral areas involving high cognitive process and emotional regulation to confer a heightened vulnerability for suicidal behavior. Suicide is a complex process ranging fro...

Utility of diffusion tensor imaging in differentiating benign from malignant hepatic focal lesions.

To assess the diagnostic accuracy of diffusion tensor imaging (DTI) in the characterization of hepatic focal lesions (HFLs) and compare it to diffusion-weighted imaging (DWI).... Prospective analysis was done for 49 patients (23 male and 26 female) with 74 HFLs who underwent dynamic MRI, DWI, and DTI. Apparent diffusion coefficient (ADC) values from DWI, fractional anisotropy ... The ADC, MD, and FA at cutoff values of ≤ 1.17 × 10... MD and FA of DTI are non-invasive, very good, and excellent discriminators superior to ADC measured by DWI for the differentiation of HFLs.... • The ADC, MD, and FA at cutoff values of ≤ 1.17 × 10...