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Electron radiation therapy: Back to the future?

Sophie Renard1, Laure Parent2, Ludovic de Marzi3

  • 1Department of Radiation Oncology, Institut de cancérologie de Lorraine, 6, avenue de Bourgogne, 54500 Vandœuvre-lès-Nancy, France.

Cancer Radiotherapie : Journal De La Societe Francaise De Radiotherapie Oncologique
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Summary
This summary is machine-generated.

Electron radiotherapy, while less common, remains crucial for specific superficial lesions and total skin irradiation. Emerging flash therapy with electrons shows promise for high-dose, rapid treatments with fewer side effects.

Keywords:
ElectronsFlashFlash therapyÉlectrons

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Area of Science:

  • Radiation Oncology
  • Medical Physics

Background:

  • Electron radiotherapy offers physical advantages for superficial lesions but faces challenges with penumbra and heterogeneity.
  • Advancements in photon therapy, brachytherapy, and contact therapy have led to electron therapy being replaced in many indications.
  • Low usage frequency impacts safety and cost-effectiveness.

Purpose of the Study:

  • To evaluate the current role and future potential of electron radiotherapy in clinical practice.
  • To compare electron therapy with modern photon techniques in specific oncological indications.
  • To explore the impact of emerging flash therapy on electron beam applications.

Main Methods:

  • Review of clinical applications and physical characteristics of electron radiotherapy.
  • Comparison with intensity-modulated conformal radiotherapy, brachytherapy, and photon techniques.
  • Analysis of emerging data on flash therapy using electron beams.

Main Results:

  • Electron therapy remains superior for total skin irradiation (mycosis fungoides) and certain chest wall irradiations.
  • Flash therapy, initiated with electrons, demonstrates high efficacy and reduced side effects compared to conventional radiotherapy.
  • Despite reduced overall use, electron radiotherapy is essential for niche indications in specialized centers.

Conclusions:

  • Electron radiotherapy, though largely superseded, retains vital roles in specific clinical scenarios.
  • Flash therapy represents a significant technological advancement, potentially creating new indications for electron beams.
  • Specialized teams are crucial for defining and implementing future applications of electron and flash therapy.