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Acides aminés, peptides et protéines
Protéines
Nucléoprotéines
Protéines chromosomiques nonhistones
Protéines de maintenance des minichromosomes
Protéines de maintenance des minichromosomes : Questions médicales fréquentes
Termes MeSH sélectionnés :
Radiographic Image Interpretation, Computer-Assisted
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"name": "Comment diagnostiquer une anomalie des protéines MCM ?",
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"text": "Des tests génétiques et des analyses de protéines peuvent identifier des anomalies."
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"@type": "Question",
"name": "Quels tests sont utilisés pour évaluer les MCM ?",
"position": 2,
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"@type": "Question",
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"position": 3,
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"@type": "Question",
"name": "Quels marqueurs sont associés aux MCM ?",
"position": 4,
"acceptedAnswer": {
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"text": "Les marqueurs de prolifération cellulaire, comme Ki-67, sont souvent associés aux MCM."
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"@type": "Question",
"name": "Les MCM sont-elles liées à des cancers spécifiques ?",
"position": 5,
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"@type": "Question",
"name": "Quels symptômes indiquent une dysfonction des MCM ?",
"position": 6,
"acceptedAnswer": {
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"text": "Des anomalies dans la réplication de l'ADN peuvent entraîner des symptômes variés."
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"@type": "Question",
"name": "Les symptômes sont-ils spécifiques aux MCM ?",
"position": 7,
"acceptedAnswer": {
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"text": "Non, les symptômes peuvent varier selon le type de maladie associée aux MCM."
}
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"@type": "Question",
"name": "Comment les MCM affectent-elles la santé cellulaire ?",
"position": 8,
"acceptedAnswer": {
"@type": "Answer",
"text": "Une mauvaise fonction des MCM peut entraîner des erreurs dans la réplication de l'ADN."
}
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{
"@type": "Question",
"name": "Les MCM sont-elles liées à des symptômes neurologiques ?",
"position": 9,
"acceptedAnswer": {
"@type": "Answer",
"text": "Certaines études suggèrent un lien entre les MCM et des troubles neurologiques."
}
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{
"@type": "Question",
"name": "Peut-on observer des symptômes précoces de dysfonction MCM ?",
"position": 10,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des signes précoces peuvent inclure des anomalies de croissance cellulaire."
}
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{
"@type": "Question",
"name": "Peut-on prévenir les anomalies des MCM ?",
"position": 11,
"acceptedAnswer": {
"@type": "Answer",
"text": "Une bonne hygiène de vie et un suivi médical régulier peuvent aider à prévenir."
}
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{
"@type": "Question",
"name": "Y a-t-il des tests de dépistage pour les MCM ?",
"position": 12,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des tests génétiques peuvent être proposés pour les personnes à risque élevé."
}
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{
"@type": "Question",
"name": "L'alimentation influence-t-elle les MCM ?",
"position": 13,
"acceptedAnswer": {
"@type": "Answer",
"text": "Une alimentation équilibrée peut soutenir la santé cellulaire et la fonction des MCM."
}
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{
"@type": "Question",
"name": "Le stress affecte-t-il les MCM ?",
"position": 14,
"acceptedAnswer": {
"@type": "Answer",
"text": "Le stress chronique peut perturber la fonction cellulaire, y compris celle des MCM."
}
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{
"@type": "Question",
"name": "Les exercices physiques aident-ils les MCM ?",
"position": 15,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'exercice régulier peut améliorer la santé cellulaire et la fonction des MCM."
}
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{
"@type": "Question",
"name": "Quels traitements ciblent les MCM ?",
"position": 16,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des inhibiteurs spécifiques de MCM sont en cours de développement pour le cancer."
}
},
{
"@type": "Question",
"name": "Les thérapies géniques peuvent-elles aider ?",
"position": 17,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, la thérapie génique pourrait corriger les anomalies des MCM dans certains cas."
}
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"@type": "Question",
"name": "Y a-t-il des médicaments pour les MCM ?",
"position": 18,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des médicaments ciblant la voie de réplication de l'ADN sont en développement."
}
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{
"@type": "Question",
"name": "Comment la chimiothérapie affecte-t-elle les MCM ?",
"position": 19,
"acceptedAnswer": {
"@type": "Answer",
"text": "La chimiothérapie peut perturber la fonction des MCM, affectant la réplication cellulaire."
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"@type": "Question",
"name": "Les traitements sont-ils personnalisés pour les MCM ?",
"position": 20,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les traitements peuvent être adaptés en fonction des profils de MCM des patients."
}
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"@type": "Question",
"name": "Quelles complications peuvent survenir avec des anomalies MCM ?",
"position": 21,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des complications incluent des cancers, des troubles de croissance et des maladies génétiques."
}
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{
"@type": "Question",
"name": "Les anomalies MCM sont-elles héréditaires ?",
"position": 22,
"acceptedAnswer": {
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"text": "Certaines anomalies peuvent être héréditaires, augmentant le risque de maladies."
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{
"@type": "Question",
"name": "Comment les MCM affectent-elles le vieillissement ?",
"position": 23,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des dysfonctionnements des MCM peuvent accélérer le vieillissement cellulaire et tissulaire."
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"@type": "Question",
"name": "Les MCM sont-elles liées à des maladies auto-immunes ?",
"position": 24,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des recherches suggèrent un lien potentiel entre les MCM et certaines maladies auto-immunes."
}
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"@type": "Question",
"name": "Les anomalies MCM peuvent-elles causer des troubles neurologiques ?",
"position": 25,
"acceptedAnswer": {
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"text": "Oui, des anomalies dans les MCM peuvent être associées à des troubles neurologiques."
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{
"@type": "Question",
"name": "Quels facteurs augmentent le risque d'anomalies MCM ?",
"position": 26,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des facteurs génétiques, environnementaux et liés au mode de vie peuvent augmenter le risque."
}
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"@type": "Question",
"name": "L'exposition à des toxines influence-t-elle les MCM ?",
"position": 27,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'exposition à certaines toxines peut perturber la fonction des MCM."
}
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{
"@type": "Question",
"name": "Le tabagisme affecte-t-il les MCM ?",
"position": 28,
"acceptedAnswer": {
"@type": "Answer",
"text": "Le tabagisme est un facteur de risque connu pour des anomalies dans la fonction des MCM."
}
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"@type": "Question",
"name": "Le vieillissement est-il un facteur de risque pour les MCM ?",
"position": 29,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, le vieillissement peut affecter la fonction des MCM et augmenter le risque de maladies."
}
},
{
"@type": "Question",
"name": "Les antécédents familiaux influencent-ils les MCM ?",
"position": 30,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des antécédents familiaux de maladies liées aux MCM peuvent augmenter le risque."
}
}
]
}
]
}
Deep learning image reconstruction (DLIR) algorithms employ convolutional neural networks (CNNs) for CT image reconstruction to produce CT images with a very low noise level, even at a low radiation d...
Dynamic myocardial computed tomography perfusion (CTP) is a novel technique able to depict cardiac ischemia....
To evaluate the impact of a four-dimensional noise reduction filter (similarity filter [4D-SF]) on image quality in dynamic CTP imaging, allowing for substantial radiation dose reduction....
Dynamic CTP datasets of 30 patients (16 women) with suspected coronary artery disease, acquired with a 320-slice CT system, were retrieved, reconstructed with the deep learning-based algorithm of the ...
Mean SNR in four-chamber view (unfiltered vs. filtered) were: septum=4.1 ± 2.1 versus 7.6 ± 5.6; lateral wall=4.5 ± 2.0 versus 8.0 ± 4.9; CNRseptum=16.6 ± 8.9 versus 31.7 ± 28; lateral wall=16.2 ± 8.9...
Similarity filtering after DLR improves image quality, possibly enabling dose reduction in dynamic CTP imaging in patient with suspected chronic coronary syndrome....
Quantitative computed tomography (CT) plays an increasingly important role in phenotyping airway diseases. Lung parenchyma and airway inflammation could be quantified by contrast enhancement at CT, bu...
For this cross-sectional retrospective study, 234 lung-healthy patients who underwent spectral CT in four different contrast phases (non-enhanced, pulmonary arterial, systemic arterial, and venous pha...
Mean lung density was higher at 40 keV compared to that at 100 keV in all groups (p < 0.001). λHU of lung attenuation was significantly higher in the systemic (1.7 HU/keV) and pulmonary arterial phase...
Spectral CT may quantify lung parenchyma and airway wall enhancement with a single contrast phase acquisition, and may separate arterial and venous enhancement. Further studies are warranted to analyz...
• Spectral CT may quantify lung parenchyma and airway wall enhancement with a single contrast phase acquisition. • Spectral CT may separate arterial and venous enhancement of lung parenchyma and airwa...
The analysis of the psoas muscle in morphological and functional imaging has proved to be an accurate approach to assess sarcopenia, i.e. a systemic loss of skeletal muscle mass and function that may ...
To evaluate the depiction of wrist tendons in virtual monochromatic images (VMIs) during a dual-energy CT (DE-CT) with the VMI image of conventional equivalent to 120 kVp....
Using Catphan600 and phantom analysis software for CT evaluation, measurements of VMI in a DE-CT were performed corresponding to the tube voltages of single-energy CT at 120 kVp. Using a Discovery CT7...
The highest CT number and CNR for the tendon were for the 140 keV VMI in the DE-CT compared to the other energy levels. There were significantly higher CT numbers, CNR values, and visual scores for ea...
Energy level of the VMIs during DE-CT for the best wrist tendon delineation was 140 keV. This value of 140 keV for the DE-CT was significantly higher than the CT number and CNR for the extensor pollic...
To investigate the image quality of lower extremity computed tomography angiography (LE-CTA) using a reconstruction algorithm for monoenergetic images (MEIs) to evaluate peripheral arterial disease (P...
A total of 146 consecutive patients who underwent LE-CTA on a dual-energy scanner to obtain MEIs at 40, 50, 60, 70, and 80 keV were included. The overall image quality, segmental image quality of the ...
The mean overall image quality of each MEI was 2.9 ± 0.7, 3.6 ± 0.6, 3.9 ± 0.3, 4.0 ± 0.2, and 4.0 ± 0.2 from 40 to 80 keV, respectively. The segmental image quality gradually increased from 40 to 70-...
The LE-CTA method using a reconstruction algorithm for MEIs at 70-80 keV can enhance the image quality for PAD evaluation and improve mitigate venous contamination and metal artifacts....
Acute ischemic lesions are challenging to detect by conventional computed tomography (CT). Virtual monoenergetic images may improve detection rates by increased tissue contrast....
To compare the ability to detect ischemic lesions of virtual monoenergetic with conventional images in patients with acute stroke....
We included consecutive patients at our center that underwent brain CT in a spectral scanner for suspicion of acute stroke, onset <12 h, with or without (negative controls) a confirmed cortical ischem...
In total, 29 patients were included (January 2018 to July 2019). SNR was higher in virtual monoenergetic compared to conventional images, significantly at 60-150 keV. CNR between ischemic gray and nor...
Virtual monoenergetic reconstructions of spectral CIs may improve image quality and diagnostic ability in stroke assessment....
This study aimed to compare the performance of deep learning image reconstruction (DLIR) and adaptive statistical iterative reconstruction-Veo (ASIR-V) in improving image quality and diagnostic perfor...
Prostate cancer is one of the most common malignant tumors in middle-aged and elderly men and carries significant prognostic implications, and recent studies suggest that dual-energy computed tomograp...
We conducted a retrospective analysis of 83 patients with prostate cancer or prostatic hyperplasia who underwent DECT scans at Meizhou People's Hospital between July 2019 and December 2023. The variab...
Virtual monoenergetic images at 40 keV showed significantly higher CT values (168.19 ± 57.14) compared to conventional linear blending images (66.66 ± 15.5) for prostate cancer (P < 0.001). The 50 keV...
Virtual monoenergetic images reconstructed at 40 keV and 50 keV from DECT arterial phase scans substantially enhance the image quality of prostate lesions and improve diagnostic efficacy for prostate ...
Reduction in iodinated contrast medium (CM) dose is highly motivated. Our aim was to evaluate if a 50% reduction of CM, while preserving image quality, is possible in brain CT angiography (CTA) using ...
Consecutive patients older than 18 years without intracranial stenosis/occlusion were included. Three imaging protocols were used: group 1, full CM dose; group 2, 50% CM dose suboptimal timing; and gr...
Qualitatively and quantitatively, VMI (40-60 keV) improved image quality within each group. Significantly higher attenuation and CNR was found for group 3 VMI 40-50 keV, with unchanged SNR, compared t...
VMI of 50 keV with 50% CM dose increases qualitative and quantitative image quality over CI with full CM dose. Using VMI reduces non-diagnostic examinations and may salvage CTA examinations deemed non...