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Published on: May 8, 2018
Technique for stereotactic body radiotherapy for spinal metastases
Matthew Foote1, Daniel Letourneau, Derek Hyde
1Department of Radiation Oncology, Princess Margaret Hospital, University of Toronto, 610 University Avenue, Toronto, Ontario M5G 2M9, Canada.
Summary
Stereotactic body radiotherapy (SBRT) offers precise, high-dose radiation for spinal tumors, optimizing local control. Careful planning and delivery are crucial to prevent radiation myelopathy due to the spinal cord
Area of Science:
- Radiation Oncology
- Neurosurgery
- Medical Physics
Background:
- Stereotactic body radiotherapy (SBRT) is an advanced radiation technique for spinal tumors.
- It builds upon established principles of brain radiosurgery.
- The spine's immobility makes it suitable for SBRT, offering potential clinical benefits.
Observation:
- SBRT allows high-dose delivery to spinal tumors, aiming to improve local control.
- This technique helps prevent disease progression that could lead to spinal cord compression.
- Accurate radiation delivery is paramount due to the proximity of tumors to the spinal cord.
Findings:
- Spine SBRT requires sophisticated treatment planning and delivery systems.
- Delivery can be achieved using robotic-based linac systems (e.g., CyberKnife) or linac-based systems with multileaf collimators and image guidance.
- Radiation myelopathy is a significant risk if treatment is inaccurate or spinal cord dose limits are exceeded.
Implications:
- Spine SBRT presents a promising approach for managing spinal tumors.
- Technical accuracy in planning and delivery is essential to mitigate risks like radiation myelopathy.
- This review details the SBRT apparatus, planning, and delivery protocols at the University of Toronto.
