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Stereotactic Radiosurgery for Gynecologic Cancer
Published on: April 17, 2012
Charged-particle radiosurgery for intracranial vascular malformations
J I Fabrikant1, R P Levy, G K Steinberg
1Division of Research Medicine and Radiation Biophysics, Lawrence Berkeley Laboratory, University of California, Berkeley.
Neurosurgery Clinics of North America
|January 1, 1992
Summary
Heavy charged-particle radiosurgery offers superior dose distribution for treating brain arteriovenous malformations (AVMs). This advanced technique achieves high obliteration rates and excellent patient outcomes, sparing healthy brain tissue.
Area of Science:
- Neurosurgery
- Radiation Oncology
- Medical Physics
Background:
- Stereotactic radiosurgery is a key treatment for intracranial arteriovenous malformations (AVMs).
- Heavy charged-particle radiation offers unique physical properties advantageous for radiosurgery.
- These properties include improved dose distribution and reduced scatter compared to photons and protons.
Purpose of the Study:
- To evaluate the efficacy and safety of stereotactic helium-ion Bragg peak radiosurgery for intracranial AVMs.
- To assess treatment outcomes based on AVM characteristics and radiation dose.
- To demonstrate the advantages of heavy charged-particle radiosurgery in complex AVM cases.
Main Methods:
- Utilized stereotactic helium-ion Bragg peak radiosurgery in multi-institutional clinical trials.
- Treated approximately 400 patients with symptomatic, surgically inaccessible AVMs.
- Integrated stereotactic cerebral angiogram, CT, and MR imaging for treatment planning and dose calculation.
Main Results:
- Achieved excellent or good neurologic grades in about 90% of patients.
- Reported complete angiographic obliteration rates of 90-95% for AVMs < 14 cm³ at 3 years.
- Demonstrated high success rates even for large and complex AVMs, with minimal radiation to surrounding brain tissue.
Conclusions:
- Stereotactic helium-ion radiosurgery is a safe and effective treatment for intracranial AVMs.
- Its unique physical properties allow precise targeting and sparing of adjacent neural structures.
- This technique offers significant advantages over other radiosurgical modalities, particularly for complex AVMs.
