Related Experiment Videos
Stereotactic radiosurgery for intracranial arteriovenous malformations using a standard linear accelerator
J S Loeffler1, E Alexander, R L Siddon
1Department of Radiation Therapy, Harvard Medical School, Boston, MA 02115.
International Journal of Radiation Oncology, Biology, Physics
|September 1, 1989
Summary
Stereotactic radiosurgery using a standard linear accelerator effectively treats brain arteriovenous malformations (AVMs). This safe technique shows promising obliteration rates for AVMs with no reported complications.
Area of Science:
- Neurosurgery
- Radiation Oncology
- Medical Physics
Background:
- Stereotactic radiosurgery offers a minimally invasive approach for treating intracranial arteriovenous malformations (AVMs).
- Developing cost-effective and accessible methods for AVM treatment is crucial.
Purpose of the Study:
- To evaluate the efficacy and safety of stereotactic radiosurgery using a standard linear accelerator for treating intracranial AVMs.
- To compare outcomes with existing stereotactic treatment systems.
Main Methods:
- Utilized a modified 6 MV linear accelerator for stereotactic, limited-field radiation delivery.
- Employed the Brown-Roberts-Wells (BRW) stereotactic head frame for precise localization and immobilization.
- Administered single doses of 1500-2500 cGy to AVMs <2.7 cm using multiple non-coplanar arcs.
Main Results:
- 17 AVMs in 16 patients were treated between February 1986 and July 1988.
- Complete AVM obliteration was achieved in 5 of 11 patients within 1 year, and in 3 additional patients by 24 months.
- No rebleeding or serious complications were observed in any patient.
Conclusions:
- Stereotactic radiosurgery with a standard linear accelerator is an effective and safe treatment for intracranial AVMs.
- This technique provides favorable results comparable to more complex and expensive stereotactic systems.
- The rapid dose falloff beyond the target volume ensures precise treatment delivery.