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Mostrando 321 - 340 Resultados de 2,457 Para Buscar '"Oar"', tiempo de consulta: 0.30s Limitar resultados
  1. 321
    “…Some trials have specified that organ at risk (OAR) dose constraints should take priority over target coverage. …”
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    Clinical outcomes of MR-guided adrenal stereotactic ablative radiotherapy with preferential sparing of organs at risk
  2. 322
    “…The plan quality and execution efficiency of each plan were compared, including planning target volume (PTV) dose, organs at risk (OAR) dose, segments number (SN), monitor units (MU), delivery time (DT), and dose verification results. …”
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    Influence of minimum segment width on intensity-modulated radiotherapy plan for left-sided breast cancer after breast conserving surgery
  3. 323
    “…In Hemithoracic Irradiation, OAR exposure was identical in all modalities. For WAI, Reg 2.5 resulted in lower exposure of liver and bone. …”
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    Accelerated large volume irradiation with dynamic Jaw/Dynamic Couch Helical Tomotherapy
  4. 324
    “…PURPOSE: The purpose of this study was to explore the correlation between the respiration-induced target motion and volume variation with the dosimetric variance on breast and organ at risk (OAR) during free breathing. METHODS AND MATERIALS: After breast-conserving surgery, seventeen patients underwent respiration-synchronized 4DCT simulation scans during free breathing. …”
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    Online Artículo Texto
    Correlation between target motion and the dosimetric variance of breast and organ at risk during whole breast radiotherapy using 4DCT
  5. 325
    “…For the comparison of organs at risk (OAR), we analyzed the mean dose. RESULTS: Tomotherapy showed a significantly higher mean target dose than four-box field CRT (p = 0.001). …”
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    Online Artículo Texto
    Dosimetric evaluation of Tomotherapy and four-box field conformal radiotherapy in locally advanced rectal cancer
  6. 326
    “…VMAT plans showed better CI (p < 0.01) and better OAR sparing at low doses than HT plans, particularly at doses less than 5 Gy. …”
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    Evaluation of volumetric modulated arc therapy for postmastectomy treatment
  7. 327
    “…BACKGROUND: Intensity modulated radiotherapy treatment planning for sites with many different organs-at-risk (OAR) is complex and labor-intensive, making it hard to obtain consistent plan quality. …”
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    Online Artículo Texto
    Automatic interactive optimization for volumetric modulated arc therapy planning
  8. 328
    “…Treatment plans were calculated in order to keep the dose to abdominal OAR as low as possible while maintaining the same planned target volume (PTV) coverage. …”
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    Online Artículo Texto
    Can We Spare the Pancreas and Other Abdominal Organs at Risk? A Comparison of Conformal Radiotherapy, Helical Tomotherapy and Proton Beam Therapy in Pediatric Irradiation
  9. 329
    “…There was a clear advantage for the VMAT plan; it provided superior organ at risk (OAR) sparing and adequate target coverage. VMAT has relatively low monitor units at 0.93±0.034 times 7F6. …”
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    Radiation-Induced Second Cancer Risk from External Beam Photon Radiotherapy for Head and Neck Cancer: Impact on in-Field and Out-of-Field Organs
  10. 330
    “…OAR dose parameters remained lower in IMPT cases. …”
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    Potential proton and photon dose degradation in advanced head and neck cancer patients by intratherapy changes
  11. 331
    “…If one is prepared to accept less stringent dose homogeneity criteria from the RTOG 1016 protocol, nine APs would comply with the protocol, while providing lower OAR doses than the HDPs. Overall, AP is a promising clinical tool, but it could benefit from a better process for shifting the balance between the target dose coverage/homogeneity and OAR sparing. …”
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    Initial evaluation of automated treatment planning software
  12. 332
    “…Higher maximum and mean doses to OAR were observed in the BM plans; however, for both plans, dose constraints were respected. …”
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    Comparison of stereotactic plans for brain tumors with two different multileaf collimating systems
  13. 333
    “…The target and OAR spatial proximity provided a more realistic treatment planning and dose delivery exercise. …”
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    Development of a modified head and neck quality assurance phantom for use in stereotactic radiosurgery trials
  14. 334
    por Rangarajan, Ramya
    Publicado 2018
    “…The volumes of the high-risk clinical target volume and OAR contoured were recorded for every insertion. …”
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    Interfraction Variations in Organ Filling and Their Impact on Dosimetry in CT Image Based HDR Intracavitary Brachytherapy
  15. 335
    “…PURPOSE: Interstitial brachytherapy implemented for locally advanced gynecologic cancer can result in toxicity due to the proximity of organs at risk (OAR). We report our experience using superflab bolus as vaginal packing to displace OAR during interstitial brachytherapy. …”
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    Initial experience using superflab as intravaginal packing during interstitial brachytherapy for advanced gynecologic cancer
  16. 336
    “…A total of 12 DEmiRNAs were validated by real-time quantitative PCR (RT-qPCR). The oar-miR-150, oar-miR-370-3p and oar-miR-411b-3p were found common differentially expressed in both PPR vaccine virus-inoculated PBMC cells and ST cells. …”
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    MicroRNA Expression Profile in Peripheral Blood Lymphocytes of Sheep Vaccinated with Nigeria 75/1 Peste Des Petits Ruminants Virus
  17. 337
    “…Clinically acquired CTs and associated delineations of target volumes and organs-at-risk (OARs) were used for MR-linac treatment planning in Monaco. …”
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    Evaluation of plan quality in radiotherapy planning with an MR-linac
  18. 338
    “…Other constraint goals were also defined for the target and organs at risk (OAR). RESULTS: All dose constraint parameters for the target and OAR met the goals within the acceptable ranges for the 3 techniques. …”
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    Dosimetric Comparison of Helical Tomotherapy, Volumetric-Modulated Arc Therapy, and Intensity-Modulated Proton Therapy for Angiosarcoma of the Scalp
  19. 339
    “…The goal of replanning was to improve PTV/GTV coverage while keeping the dose to gastrointestinal OARs the same or lower or to reduce OAR doses while keeping PTV coverage the same or higher. …”
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    Dosimetric Quality of Online Adapted Pancreatic Cancer Treatment Plans on an MRI-Guided Radiation Therapy System
  20. 340
    “…PURPOSE: To verify the dose sparing effect of hydrogel spacer (SpaceOAR™) on rectal dosimetry for prostate brachytherapy, and to determine whether prostate and rectal dosimetry was affected by the time gap between hydrogel spacer injection and brachytherapy dosimetry. …”
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    Effect of the timing of hydrogel spacer placement on prostate and rectal dosimetry of low-dose-rate brachytherapy implants
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