Mostrando 2,021 - 2,040 Resultados de 2,457 Para Buscar '"Oar"', tiempo de consulta: 0.12s Limitar resultados
  1. 2021
    “…Single-session stereotactic radiosurgery (SRS) might not provide an adequate dose for long-term local control due to the initial tumor volume and the involvement of radiation sensitive organs at risk (OARs). Two-session radiosurgery has been described as a feasible strategy for dose escalation in large secondary brain tumors. …”
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  2. 2022
    “…IMPORTANCE: Personalized radiotherapy planning depends on high-quality delineation of target tumors and surrounding organs at risk (OARs). This process puts additional time burdens on oncologists and introduces variability among both experts and institutions. …”
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  3. 2023
    “…PURPOSE: This study focused on predicting 3D dose distribution at high precision and generated the prediction methods for nasopharyngeal carcinoma patients (NPC) treated with Tomotherapy based on the patient-specific gap between organs at risk (OARs) and planning target volumes (PTVs). METHODS: A convolutional neural network (CNN) is trained using the CT and contour masks as the input and dose distributions as output. …”
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  4. 2024
  5. 2025
    “…The RMSD volume histogram (RVH) analysis shows SPArc provided better plan robustness in OARs sparing, including the heart, LAD, ipsilateral lung, and skin. …”
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  6. 2026
  7. 2027
  8. 2028
    “…This study compared deep learning methods for auto-segmentation of organs-at-risk (OARs) and clinical target volume (CTV) in prostate cancer patients undergoing fractionated magnetic resonance (MR)-guided adaptive radiation therapy. …”
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  9. 2029
    “…PTVs and organs at risk (OARs), including both lungs, esophagus, spinal cord, heart, and left anterior descending coronary artery (LAD), both atria and ventricles were contoured. …”
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  10. 2030
    “…There was no significant difference in dose between IMRT and VMAT plans for any of the OARs assessed in these patients. The monitor units were significantly reduced in the VMAT plan in comparison to the IMRT plan for four out of five patients, with mean reduction of 66%. …”
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  11. 2031
  12. 2032
    por Wan, Bin, Lang, Jinyi, Wang, Pei, Ma, C‐M
    Publicado 2016
    “…All patients were CT‐ and MR‐scanned with a ring applicator in situ. HR‐CTV and OARs were contoured according to fused CT and MR images. …”
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  13. 2033
    “…It is the purpose of this study to evaluate how self‐expanding stents (SESs) affect esophageal cancer radiation planning target volumes (PTVs) and dose delivered to surrounding organs at risk (OARs). Ten patients were evaluated, for whom a SES was placed before radiation. …”
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  14. 2034
    “…Compared with the conventional AP–PA plan, Nonco_IMRT had better PTV coverage and OARs sparing, except for being larger in V5 to breast and lung. …”
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  15. 2035
    “…PURPOSE: To investigate the dose depositions to organs at risk (OARs) and associated cancer risk in cancer patients scanned with 4-dimensional computed tomography (4DCT) as compared with conventional 3DCT. …”
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  16. 2036
  17. 2037
    por Herrera, Higmar, Reyes, Uvaldo
    Publicado 2021
    “…To obtain good clinical outcomes, tight dosimetric constraints are placed on organs at risk (OARs) to maximize tumor control and minimize normal tissue complication probabilities. …”
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  18. 2038
    “…BACKGROUND AND PURPOSE: Convolutional neural networks (CNNs) are increasingly used to automate segmentation for radiotherapy planning, where accurate segmentation of organs-at-risk (OARs) is crucial. Training CNNs often requires large amounts of data. …”
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  19. 2039
  20. 2040
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