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[Volume effect models in radiation therapy].

S Sakata1

  • 1Dept. of Radiation Therapy, Chiba Cancer Center Hospital.

Gan No Rinsho. Japan Journal of Cancer Clinics
|October 1, 1987
PubMed
Summary
This summary is machine-generated.

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The "volume effect" in radiation therapy shows normal tissue dose decreases with larger irradiated volumes, impacting treatment. Current models vary and have limitations, necessitating further research for reliable quantification.

Area of Science:

  • Radiation Oncology
  • Medical Physics
  • Radiobiology

Context:

  • The "volume effect" describes how normal tissue isoeffect dose decreases as irradiated area or volume increases in radiation therapy.
  • This phenomenon significantly alters the therapeutic ratio, especially when treating large tumors.
  • Existing models (e.g., power law, volume dose histogram, integral probability) attempt to quantify this effect but rely on clinical data.

Purpose:

  • To highlight the challenges and limitations of current models used to quantify the "volume effect" in radiation therapy.
  • To emphasize the need for further research and development of more reliable theoretical and empirical models for the volume effect.

Summary:

  • The "volume effect" is a critical consideration in radiation therapy, where larger irradiated volumes necessitate lower doses to normal tissues.

Related Experiment Videos

  • Current quantification models exhibit significant variability and are often restricted in their applicability.
  • Developing robust and universally applicable volume effect models requires extensive and appropriate clinical data for both theoretical and empirical validation.

    • Impact:

    • Improved understanding of the "volume effect" can lead to optimized radiation therapy planning for larger tumors.
    • Development of better models will enhance the therapeutic ratio, potentially improving treatment outcomes and reducing normal tissue toxicity.
    • Further research is crucial for establishing reliable methods to predict and manage dose-response relationships in irradiated tissues.