Titre : Acquisition d'organes et de tissus

Acquisition d'organes et de tissus : Questions médicales fréquentes

Termes MeSH sélectionnés :

Diffusion Tensor Imaging
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fonction rénale ?\nComment identifier une complication pulmonaire ?", "url": "https://questionsmedicales.fr/mesh/D009927?mesh_terms=Diffusion+Tensor+Imaging&page=4#section-symptômes" }, { "@type": "MedicalWebPage", "name": "Prévention", "headline": "Prévention sur Acquisition d'organes et de tissus", "description": "Comment promouvoir le don d'organes ?\nQuelles sont les mesures de sécurité pour les donneurs ?\nComment éviter les infections chez les receveurs ?\nQuelles sont les recommandations pour les receveurs ?\nComment sensibiliser à l'importance du don ?", "url": "https://questionsmedicales.fr/mesh/D009927?mesh_terms=Diffusion+Tensor+Imaging&page=4#section-prévention" }, { "@type": "MedicalWebPage", "name": "Traitements", "headline": "Traitements sur Acquisition d'organes et de tissus", "description": "Quels traitements sont nécessaires après une transplantation ?\nComment prévenir le rejet d'organe ?\nQuels sont les traitements pour les complications ?\nComment gérer les effets secondaires des médicaments ?\nQuels sont les traitements pour les infections post-transplantation ?", "url": "https://questionsmedicales.fr/mesh/D009927?mesh_terms=Diffusion+Tensor+Imaging&page=4#section-traitements" }, { "@type": "MedicalWebPage", "name": "Complications", "headline": "Complications sur Acquisition d'organes et de tissus", "description": "Quelles sont les complications possibles après une transplantation ?\nComment gérer le rejet aigu ?\nQuels sont les signes d'une infection grave ?\nQuelles complications cardiovasculaires peuvent survenir ?\nComment prévenir les complications à long terme ?", "url": "https://questionsmedicales.fr/mesh/D009927?mesh_terms=Diffusion+Tensor+Imaging&page=4#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Acquisition d'organes et de tissus", "description": "Quels facteurs augmentent le besoin de transplantation ?\nComment l'âge influence-t-il le don d'organes ?\nQuels comportements augmentent les risques de maladies ?\nComment les antécédents familiaux influencent-ils le risque ?\nQuels facteurs socio-économiques influencent le don ?", "url": "https://questionsmedicales.fr/mesh/D009927?mesh_terms=Diffusion+Tensor+Imaging&page=4#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment évaluer la nécessité d'une transplantation ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "L'évaluation inclut des tests médicaux, des antécédents et des examens physiques." } }, { "@type": "Question", "name": "Quels tests sont utilisés pour le don d'organes ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Des tests sanguins, d'imagerie et de compatibilité tissulaire sont effectués." } }, { "@type": "Question", "name": "Comment déterminer la compatibilité des donneurs ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "La compatibilité est évaluée par des tests HLA et des groupes sanguins." } }, { "@type": "Question", "name": "Quels critères excluent un donneur potentiel ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "Des maladies infectieuses, des cancers ou des antécédents médicaux graves peuvent exclure." } }, { "@type": "Question", "name": "Comment évaluer la fonction d'un organe avant le don ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "Des tests de fonction hépatique, rénale ou cardiaque sont réalisés pour évaluer l'organe." } }, { "@type": "Question", "name": "Quels signes indiquent un besoin d'organe ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Fatigue extrême, douleurs, défaillance d'organe et symptômes d'insuffisance." } }, { "@type": "Question", "name": "Comment reconnaître une réaction au rejet ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Symptômes incluent fièvre, douleur, gonflement et dysfonction de l'organe transplanté." } }, { "@type": "Question", "name": "Quels symptômes d'infection post-transplantation ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Fièvre, frissons, rougeur et douleur au site de la transplantation sont fréquents." } }, { "@type": "Question", "name": "Quels signes d'une mauvaise fonction rénale ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Oligurie, œdème, hypertension et fatigue peuvent indiquer une défaillance rénale." } }, { "@type": "Question", "name": "Comment identifier une complication pulmonaire ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Toux persistante, essoufflement et douleur thoracique peuvent signaler une complication." } }, { "@type": "Question", "name": "Comment promouvoir le don d'organes ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Sensibilisation, éducation et campagnes d'information encouragent le don d'organes." } }, { "@type": "Question", "name": "Quelles sont les mesures de sécurité pour les donneurs ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "Des évaluations médicales rigoureuses et des protocoles de sécurité sont mis en place." } }, { "@type": "Question", "name": "Comment éviter les infections chez les receveurs ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Hygiène rigoureuse, vaccinations et suivi médical régulier aident à prévenir les infections." } }, { "@type": "Question", "name": "Quelles sont les recommandations pour les receveurs ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Suivre les prescriptions, éviter les infections et assister aux rendez-vous médicaux." } }, { "@type": "Question", "name": "Comment sensibiliser à l'importance du don ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Des campagnes médiatiques et des témoignages de receveurs peuvent sensibiliser le public." } }, { "@type": "Question", "name": "Quels traitements sont nécessaires après une transplantation ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Immunosuppresseurs, suivi médical régulier et gestion des effets secondaires sont essentiels." } }, { "@type": "Question", "name": "Comment prévenir le rejet d'organe ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "L'utilisation d'immunosuppresseurs et un suivi régulier aident à prévenir le rejet." } }, { "@type": "Question", "name": "Quels sont les traitements pour les complications ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Les complications peuvent nécessiter des médicaments, des interventions chirurgicales ou des soins intensifs." } }, { "@type": "Question", "name": "Comment gérer les effets secondaires des médicaments ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Un suivi régulier et des ajustements de dosage aident à gérer les effets secondaires." } }, { "@type": "Question", "name": "Quels sont les traitements pour les infections post-transplantation ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Antibiotiques et antiviraux sont souvent utilisés pour traiter les infections." } }, { "@type": "Question", "name": "Quelles sont les complications possibles après une transplantation ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Rejet, infections, complications vasculaires et problèmes de fonction de l'organe transplanté." } }, { "@type": "Question", "name": "Comment gérer le rejet aigu ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Le rejet aigu nécessite souvent des ajustements de médicaments immunosuppresseurs." } }, { "@type": "Question", "name": "Quels sont les signes d'une infection grave ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Fièvre élevée, détérioration rapide de l'état général et symptômes respiratoires sévères." } }, { "@type": "Question", "name": "Quelles complications cardiovasculaires peuvent survenir ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Les receveurs peuvent développer une hypertension, une athérosclérose ou des troubles du rythme." } }, { "@type": "Question", "name": "Comment prévenir les complications à long terme ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Un suivi régulier, une bonne observance des traitements et un mode de vie sain sont cruciaux." } }, { "@type": "Question", "name": "Quels facteurs augmentent le besoin de transplantation ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "Maladies chroniques, accidents, infections graves et cancers augmentent le besoin." } }, { "@type": "Question", "name": "Comment l'âge influence-t-il le don d'organes ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "L'âge avancé peut affecter la qualité des organes et la décision de don." } }, { "@type": "Question", "name": "Quels comportements augmentent les risques de maladies ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Tabagisme, alcoolisme, obésité et sédentarité augmentent les risques de maladies nécessitant un don." } }, { "@type": "Question", "name": "Comment les antécédents familiaux influencent-ils le risque ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Des antécédents familiaux de maladies héréditaires peuvent augmenter le risque de défaillance d'organe." } }, { "@type": "Question", "name": "Quels facteurs socio-économiques influencent le don ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "L'accès aux soins, l'éducation et la sensibilisation peuvent influencer les taux de don." } } ] } ] }

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...