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Related Experiment Videos

Linear Accelerator Configurations for Radiosurgery.

Mehta1, Noyes, Mackie

  • 1Department of Human Oncology, University of Wisconsin Hospital and Clinics, Madison, WI, USA

Seminars in Radiation Oncology
|July 1, 1995
PubMed
Summary

Radiosurgery systems, initially developed in Buenos Aires, Heidelberg, and Montréal, have evolved for fractionated treatments. Emerging technologies like tomotherapy show promise for improved patient outcomes and cost-effectiveness.

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Area of Science:

  • Neurosurgery
  • Radiation Oncology
  • Medical Physics

Background:

  • Radiosurgery experienced significant growth in the 1980s and 1990s, leading to diverse hardware and increased clinical application.
  • Most linear accelerator-based radiosurgery systems trace their origins to three seminal prototypes from Buenos Aires, Heidelberg, and Montréal.
  • Modern radiosurgery systems have been adapted for fractionated treatments, merging with conventional radiotherapy approaches.

Purpose of the Study:

  • To provide a historical overview of radiosurgery development.
  • To describe commonly used fractionated radiosurgery systems and their clinical outcomes.
  • To highlight emerging technologies and their potential impact on radiosurgery.

Main Methods:

  • Review of historical developments in radiosurgery hardware and clinical application.

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  • Description of fractionated radiosurgery systems and their technical specifications.
  • Analysis of clinical outcome data for various intracranial pathologies treated with radiosurgery.
  • Discussion of cost-effectiveness and emerging technologies in radiosurgery.

    • Main Results:

    • Clinical outcome data for arteriovenous malformations, acoustic neuroma, and meningioma are largely preliminary.
    • Substantial data support the radiosurgical management of metastases, with preliminary evidence suggesting cost benefits.
    • A prospective randomized trial established the superiority of boost therapy for malignant glioma, with preliminary evidence supporting radiosurgery's role.
    • New developments include robot-mounted linear accelerators, shaped fields, and tomotherapy.

    Conclusions:

    • Radiosurgery has evolved significantly from its early prototypes, with fractionated approaches becoming standard.
    • While outcome data for some conditions are preliminary, radiosurgery shows promise for managing metastases and potentially malignant gliomas.
    • Emerging technologies like tomotherapy represent exciting advancements in the field of radiosurgery.