Mostrando 1,281 - 1,300 Resultados de 2,457 Para Buscar '"Oar"', tiempo de consulta: 0.19s Limitar resultados
  1. 1281
    por Ugurlu, Berat Tugrul, Temelli, Oztun
    Publicado 2020
    “…RESULTS: In the virtual phantom study, organs at risk (OAR) mean dose, the maximum point dose, and Homogeneity Index (HI) were found to be field width dependent. …”
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  2. 1282
  3. 1283
  4. 1284
  5. 1285
    “…The plan quality evaluation of the three techniques was done by comparing the DVH parameters, conformity index (CI) and gradient index (GI). For OAR’s mean, maximum dose and dose volumes were compared for bladder, rectum and bilateral femoral heads. …”
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    Online Artículo Texto
  6. 1286
    “…Compared to 10X‐FFF and traditional flattened 6X (6X‐FF) beams, 6X‐FFF beam produced highly conformal radiosurgical dose distribution to each target volume, reduced dose to adjacent organs at risk (OAR), and significantly reduced the lung SBRT fraction duration to < 3.5 min/fraction for 54/50 Gy treatments in 3/5 fractions — significantly improving patient convenience and clinic workflow. …”
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  7. 1287
  8. 1288
  9. 1289
  10. 1290
    “…Radiation oncologists preferred the organ at risk (OAR) sparing region (2.5–4% PTV under-dosage) while medical physicists preferred better PTV coverage (1–2.5% PTV under-dosage). …”
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    Online Artículo Texto
  11. 1291
    “…BACKGROUND AND PURPOSE: Applying needles in the first brachytherapy (BT) fraction for patients with locally advanced cervical cancer allows for more dose conformality and OAR sparing, but is more challenging than in subsequent fractions, as pre-implant imaging with applicator in situ is lacking. …”
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    Online Artículo Texto
  12. 1292
    “…Clinical workflow for MRgRT of prostate cancer consisted of patient selection, simulation on both MR- and computed tomography (CT) scan, inverse intensity-modulated radiotherapy (IMRT) treatment planning and daily plan re-optimization prior to treatment delivery with partial organs at risk (OAR) recontouring within the first 2 cm outside the PTV. …”
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  13. 1293
    “…BACKGROUND AND PURPOSE: Peer-review of Target Volume (TV) and Organ at Risk (OAR) contours in radiotherapy planning are typically conducted visually; this can be time consuming and subject to interobserver variation. …”
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  14. 1294
    “…The purpose of this study was to compare single-arc (SA) and double-arc (DA) treatment plans, which are planning techniques often used in prostate cancer volumetric modulated arc therapy (VMAT), in the presence of intrafractional deformation (ID) to determine which technique is superior in terms of target dose coverage and sparing of the organs at risk (OARs). SA and DA plans were created for 27 patients with localized prostate cancer. …”
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  15. 1295
  16. 1296
    “…For the planning target volumes (PTV), D98%, D2%, the conformity index (CI), and the gradient index (GI) had no statistically significant difference. For organs‐at‐risk (OAR), V20 of the whole lung and the maximum dose of the spinal cord were significantly reduced in NCBA plans compared with CBA ones. …”
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  17. 1297
  18. 1298
    “…CONCLUSION: The margin recipe in modern TPS leads to clinically acceptable OAR doses in the presence of range uncertainties. …”
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  19. 1299
  20. 1300
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