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Interstitial brachytherapy for intracranial metastases
M W McDermott1, G R Cosgrove, D A Larson
1Department of Neurosurgery, University of California at San Francisco, USA.
Neurosurgery Clinics of North America
|July 1, 1996
Summary
Brachytherapy offers a viable, cost-effective alternative to radiosurgery for brain metastases, particularly for recurrent cases. It utilizes simpler equipment and established techniques for effective treatment.
Area of Science:
- Neurosurgery
- Radiation Oncology
- Medical Physics
Background:
- Radiosurgery is often preferred for newly diagnosed solitary brain metastases.
- Radiosurgery can involve complex planning and expensive hardware.
- Brachytherapy remains an option for recurrent metastases or when radiosurgery is not feasible.
Purpose of the Study:
- To review the radiobiology of low and high dose rate interstitial brachytherapy.
- To present University of California San Francisco (UCSF) results with iodine-125 implants.
- To discuss early experience with the photon radiosurgery system (PRS) for brain metastases.
Main Methods:
- Review of radiobiology principles for low and high dose rate brachytherapy.
- Analysis of clinical outcomes from UCSF using iodine-125 interstitial implants.
- Evaluation of initial results from Massachusetts General Hospital using the PRS.
Main Results:
- Brachytherapy requires less complex and expensive equipment compared to radiosurgery.
- Iodine-125 implants have demonstrated efficacy in treating brain metastases.
- Early PRS experience shows potential for treating brain metastases.
Conclusions:
- Interstitial brachytherapy is a valuable treatment modality for brain metastases, especially recurrent ones.
- Brachytherapy provides a more accessible and potentially cost-effective alternative to radiosurgery.
- Further evaluation of PRS is warranted for brain metastases treatment.