Stereotactic body radiation therapy: a comprehensive review

Area of Science:

• Oncology
• Radiation Oncology
• Medical Physics

Background:

• Stereotactic Body Radiation Therapy (SBRT) leverages technological advancements for precise tumor targeting.
• Conventional techniques often face limitations in delivering ablative doses with acceptable toxicity.

Purpose of the Study:

• To evaluate the efficacy and safety of SBRT as a noninvasive cancer treatment.
• To explore SBRT's potential as an alternative to surgical interventions.

Main Methods:

• Utilizes high-quality diagnostic and real-time imaging for accurate tumor localization and motion assessment.
• Applies stringent dosimetric parameters, considering functional subunits in adjacent normal tissues.
• Conducts Phase I/II trials across multiple tumor sites including lung, liver, spine, pancreas, kidney, and prostate.

Main Results:

• SBRT enables the delivery of potent radiation doses, achieving outcomes comparable to surgery.
• Demonstrates acceptable toxicity profiles, mitigating the morbidities associated with invasive procedures.
• Phase I/II trials provide initial evidence supporting SBRT's effectiveness across various cancers.

Conclusions:

• SBRT presents a viable noninvasive alternative to surgery for specific tumor types.
• Further multi-institutional Phase II and national Phase III trials are required to solidify SBRT's role in cancer treatment.