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"name": "Diagnostic",
"headline": "Diagnostic sur Tocotriénols",
"description": "Comment diagnostiquer une carence en tocotriénols ?\nQuels tests sont utilisés pour évaluer les tocotriénols ?\nLes symptômes indiquent-ils un besoin de tocotriénols ?\nPeut-on mesurer les tocotriénols dans les aliments ?\nLes niveaux de tocotriénols sont-ils standardisés ?",
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"headline": "Symptômes sur Tocotriénols",
"description": "Quels sont les symptômes d'une carence en tocotriénols ?\nLes tocotriénols affectent-ils la peau ?\nLes tocotriénols influencent-ils le cholestérol ?\nY a-t-il des effets secondaires des tocotriénols ?\nLes tocotriénols affectent-ils l'immunité ?",
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"description": "Comment prévenir une carence en tocotriénols ?\nLes suppléments de tocotriénols sont-ils nécessaires ?\nQuels aliments sont riches en tocotriénols ?\nLes tocotriénols aident-ils à prévenir les maladies cardiaques ?\nLes tocotriénols sont-ils bénéfiques pour les diabétiques ?",
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"headline": "Traitements sur Tocotriénols",
"description": "Comment les tocotriénols sont-ils administrés ?\nLes tocotriénols sont-ils efficaces contre le cancer ?\nQuelle est la posologie recommandée de tocotriénols ?\nLes tocotriénols peuvent-ils interagir avec des médicaments ?\nLes tocotriénols sont-ils sûrs pour les femmes enceintes ?",
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"name": "Complications",
"headline": "Complications sur Tocotriénols",
"description": "Quelles complications peuvent survenir avec une carence en tocotriénols ?\nLes tocotriénols peuvent-ils causer des saignements ?\nY a-t-il des risques d'allergies aux tocotriénols ?\nLes tocotriénols peuvent-ils affecter la coagulation sanguine ?\nLes tocotriénols sont-ils liés à des maladies chroniques ?",
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"name": "Facteurs de risque",
"headline": "Facteurs de risque sur Tocotriénols",
"description": "Qui est à risque de carence en tocotriénols ?\nLes personnes âgées ont-elles un risque accru ?\nLes maladies digestives augmentent-elles le risque ?\nLe mode de vie influence-t-il les niveaux de tocotriénols ?\nLes fumeurs ont-ils un risque accru de carence ?",
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"@type": "Question",
"name": "Comment diagnostiquer une carence en tocotriénols ?",
"position": 1,
"acceptedAnswer": {
"@type": "Answer",
"text": "Un diagnostic se fait par des analyses sanguines mesurant les niveaux de tocotriénols."
}
},
{
"@type": "Question",
"name": "Quels tests sont utilisés pour évaluer les tocotriénols ?",
"position": 2,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des tests de chromatographie sont utilisés pour quantifier les tocotriénols dans le sang."
}
},
{
"@type": "Question",
"name": "Les symptômes indiquent-ils un besoin de tocotriénols ?",
"position": 3,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des symptômes comme la fatigue ou des troubles neurologiques peuvent indiquer une carence."
}
},
{
"@type": "Question",
"name": "Peut-on mesurer les tocotriénols dans les aliments ?",
"position": 4,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des analyses peuvent déterminer la concentration de tocotriénols dans les aliments."
}
},
{
"@type": "Question",
"name": "Les niveaux de tocotriénols sont-ils standardisés ?",
"position": 5,
"acceptedAnswer": {
"@type": "Answer",
"text": "Il n'existe pas de niveaux standardisés, mais des références sont disponibles pour l'évaluation."
}
},
{
"@type": "Question",
"name": "Quels sont les symptômes d'une carence en tocotriénols ?",
"position": 6,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les symptômes incluent fatigue, troubles de la vision et problèmes neurologiques."
}
},
{
"@type": "Question",
"name": "Les tocotriénols affectent-ils la peau ?",
"position": 7,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, ils peuvent améliorer l'hydratation et réduire les signes de vieillissement cutané."
}
},
{
"@type": "Question",
"name": "Les tocotriénols influencent-ils le cholestérol ?",
"position": 8,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, ils peuvent aider à réduire le cholestérol LDL et améliorer la santé cardiovasculaire."
}
},
{
"@type": "Question",
"name": "Y a-t-il des effets secondaires des tocotriénols ?",
"position": 9,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des effets secondaires sont rares, mais des doses élevées peuvent causer des troubles digestifs."
}
},
{
"@type": "Question",
"name": "Les tocotriénols affectent-ils l'immunité ?",
"position": 10,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, ils peuvent moduler la réponse immunitaire et réduire l'inflammation."
}
},
{
"@type": "Question",
"name": "Comment prévenir une carence en tocotriénols ?",
"position": 11,
"acceptedAnswer": {
"@type": "Answer",
"text": "Consommer des aliments riches en tocotriénols comme l'huile de palme et les noix aide à prévenir."
}
},
{
"@type": "Question",
"name": "Les suppléments de tocotriénols sont-ils nécessaires ?",
"position": 12,
"acceptedAnswer": {
"@type": "Answer",
"text": "Ils ne sont pas toujours nécessaires si l'alimentation est équilibrée et riche en nutriments."
}
},
{
"@type": "Question",
"name": "Quels aliments sont riches en tocotriénols ?",
"position": 13,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les huiles végétales, les grains entiers et certains fruits sont de bonnes sources."
}
},
{
"@type": "Question",
"name": "Les tocotriénols aident-ils à prévenir les maladies cardiaques ?",
"position": 14,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, leur effet antioxydant peut contribuer à réduire le risque de maladies cardiaques."
}
},
{
"@type": "Question",
"name": "Les tocotriénols sont-ils bénéfiques pour les diabétiques ?",
"position": 15,
"acceptedAnswer": {
"@type": "Answer",
"text": "Ils peuvent améliorer la sensibilité à l'insuline et aider à gérer le diabète."
}
},
{
"@type": "Question",
"name": "Comment les tocotriénols sont-ils administrés ?",
"position": 16,
"acceptedAnswer": {
"@type": "Answer",
"text": "Ils sont généralement pris sous forme de suppléments oraux ou d'aliments enrichis."
}
},
{
"@type": "Question",
"name": "Les tocotriénols sont-ils efficaces contre le cancer ?",
"position": 17,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des études suggèrent qu'ils peuvent avoir des effets anticancéreux, mais des recherches sont nécessaires."
}
},
{
"@type": "Question",
"name": "Quelle est la posologie recommandée de tocotriénols ?",
"position": 18,
"acceptedAnswer": {
"@type": "Answer",
"text": "La posologie varie, mais 100 à 300 mg par jour est souvent suggérée pour les suppléments."
}
},
{
"@type": "Question",
"name": "Les tocotriénols peuvent-ils interagir avec des médicaments ?",
"position": 19,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, ils peuvent interagir avec des anticoagulants et d'autres médicaments, nécessitant prudence."
}
},
{
"@type": "Question",
"name": "Les tocotriénols sont-ils sûrs pour les femmes enceintes ?",
"position": 20,
"acceptedAnswer": {
"@type": "Answer",
"text": "Ils sont généralement considérés comme sûrs, mais il est conseillé de consulter un médecin."
}
},
{
"@type": "Question",
"name": "Quelles complications peuvent survenir avec une carence en tocotriénols ?",
"position": 21,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des complications neurologiques et cardiovasculaires peuvent survenir en cas de carence prolongée."
}
},
{
"@type": "Question",
"name": "Les tocotriénols peuvent-ils causer des saignements ?",
"position": 22,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des doses élevées peuvent augmenter le risque de saignements, surtout avec des anticoagulants."
}
},
{
"@type": "Question",
"name": "Y a-t-il des risques d'allergies aux tocotriénols ?",
"position": 23,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les allergies sont rares, mais des réactions peuvent survenir chez certaines personnes sensibles."
}
},
{
"@type": "Question",
"name": "Les tocotriénols peuvent-ils affecter la coagulation sanguine ?",
"position": 24,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, ils peuvent influencer la coagulation, nécessitant une surveillance chez les patients à risque."
}
},
{
"@type": "Question",
"name": "Les tocotriénols sont-ils liés à des maladies chroniques ?",
"position": 25,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des études montrent un lien potentiel entre les tocotriénols et la réduction de certaines maladies chroniques."
}
},
{
"@type": "Question",
"name": "Qui est à risque de carence en tocotriénols ?",
"position": 26,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les personnes ayant une alimentation pauvre en graisses saines ou des troubles d'absorption sont à risque."
}
},
{
"@type": "Question",
"name": "Les personnes âgées ont-elles un risque accru ?",
"position": 27,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, le vieillissement peut affecter l'absorption des nutriments, y compris les tocotriénols."
}
},
{
"@type": "Question",
"name": "Les maladies digestives augmentent-elles le risque ?",
"position": 28,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des maladies comme la maladie cœliaque peuvent réduire l'absorption des tocotriénols."
}
},
{
"@type": "Question",
"name": "Le mode de vie influence-t-il les niveaux de tocotriénols ?",
"position": 29,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, un mode de vie sédentaire et une mauvaise alimentation peuvent diminuer les niveaux."
}
},
{
"@type": "Question",
"name": "Les fumeurs ont-ils un risque accru de carence ?",
"position": 30,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, le tabagisme peut augmenter le besoin en antioxydants, y compris les tocotriénols."
}
}
]
}
]
}
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We tuned the program board of a decommissioned electron energy for UHDR electron delivery on a clinical LINAC without hardware modification. Pulse delivery was controlled using the respiratory gating ...
UHDR open-field mean dose rates at 100, 80, 70, and 59 cm SSD were 36.82, 59.52, 82.01, and 112.83 Gy/s, respectively. At 80 cm SSD, mean dose rate was ∼60 Gy/s for all collimated field sizes, with an...
Short SSD and tuning for high electron beam current on a standard clinical LINAC can deliver flat, homogenous UHDR electrons over a broad, clinically relevant range of field sizes and depths with prac...
The performance of a linear accelerator (Linac) depends on the integrity of its x-ray target. The sudden failure of its target not only breaks down the Linac but also could contribute significant disr...
In this study, some confusing points about electron film dosimetry using white polystyrene suggested by international protocols were verified using a clinical linear accelerator (LINAC). According to ...
Radiotherapy delivery with ultra-high dose rates (UHDR) has consistently produced normal tissue sparing while maintaining efficacy for tumour control in preclinical studies, known as the FLASH effect....
The first Varian TrueBeam (SN 1001) was clinically operative between 2009-2022, it was then decommissioned and converted into a research platform. The 18 MeV electron beam was converted into the exper...
The dose per pulse at isocenter was up to 1.28 Gy/pulse, corresponding to average and instantaneous dose rates up to 256 Gy/s and 3⋅10...
We report on the first technical conversion of a Varian TrueBeam to produce 16 MeV UHDR electron beams. This research platform will allow isocenter experiments and deliveries with conventional setups ...
Dosimetric accuracy is critical when a patient treated with volumetric modulated arc therapy (VMAT) is transferred to another beam-matched linac. To evaluate the performance of Accelerated Go Live (AG...
Two VersaHD linacs were installed using the AGL service. After the installation, the beam data such as percentage depth dose (PDD), lateral profiles and output factors for all photon beams were measur...
Dose differences in PDDs were all within ± 1% except the entrance region, and the averaged gamma indices of the lateral profiles were within 0.3. The differences in doses as a function of the MLC leaf...
We have evaluated the AGL performance in the context of beam characteristics and patient specific QA. It was demonstrated that the AGL service provides an accurate VMAT treatment reproducibility for m...
To develop an independent log file-based intensity-modulated radiation therapy (IMRT) quality assurance (QA) tool for the 0.35 T magnetic resonance-linac (MR-linac) and investigate the ability of vari...
The tool for particle simulation (TOPAS) Monte Carlo code was utilized with a previously validated linac head model. A cohort of 29 treatment plans was selected for IMRT QA using the developed QA tool...
The median and interquartile range for the TOPAS GPRs (3%/3 mm criteria) were 97.24% and 3.75%, respectively, and were 99.54% and 0.36% for the AQA tool, respectively. The computational time for TOPAS...
An independent MC and log file-based IMRT QA tool was successfully developed and can be clinically deployed for offline QA. The complexity metrics will supplement QA reports and provide information re...
Neutrons can be generated in medical linear accelerators (Linac) due to the interaction of high-energy photons (> 10 MeV) with the components of the accelerator head. The generated photoneutrons may p...
Multi-axis ionization chamber arrays can be used for quality assurance (QA) and measurement of linear accelerator (linac) specific data. In this work, the ability of the IC Profiler (Sun Nuclear Corp....
A Monte Carlo-based model of the IC Profiler detector array with Quad Wedge accessories was developed in detail from drawings provided by the manufacturer using the egs++ class library from the EGSnrc...
Measurements as well as Monte Carlo simulations confirmed the linear relationship between the area ratio...
A Monte-Carlo-based model of the detector array was developed, which could successfully reproduce measurements, demonstrating that even very complex geometries can be modeled in EGSnrc. Moreover, the ...
Linear accelerator (Linac) beam data commissioning and quality assurance (QA) play a vital role in accurate radiation treatment delivery and entail a large number of measurements using a variety of fi...
We propose to model Linac beam data through implicit neural representation (NeRP) learning. The potential of the beam model in predicting beam data from sparse measurements and detecting data collecti...
NeRP models with continuous and differentiable functions parameterized by multilayer perceptrons (MLPs) were used to represent various beam data including percentage depth dose (PDD) and profiles of 6...
Linac beam data predicted by the model agreed well with water tank measurements, with averaged Gamma passing rates (1%/1 mm passing criteria) higher than 95% and averaged mean absolute errors less tha...
A NeRP beam data modeling technique has been established for predicting beam characteristics from sparse measurements. The model provides a valuable tool to verify beam data collection accuracy and pr...
In recent years, the FLASH effect, in which ultrahigh dose rate (UHDR) radiotherapy (RT) can significantly reduce toxicity to normal tissue while maintaining antitumor efficacy, has been verified in m...
A 1.65 m long S-band backward-traveling-wave (BTW) electron linac was developed to generate high-current electron beams, supplied by a commercial klystron-based power source. A tungsten-copper electro...
The BTW linac generated 300-mA-pulse-current 11 MeV electron beams with 29 kW mean beam power, and the conversion target could sustain this high beam power within a maximum irradiation duration of 0.7...
This work demonstrated the feasibility of UHDR X-rays produced by a room-temperature RF linac, and explored the further optimization of system stability. It shows that a simple and compact UHDR X-ray ...