Comparing Helical Tomotherapy and Gamma Knife for Brain Metastasis Treatment
Author Information
Author(s): Peñagarícano José A, Yan Yulong, Shi Chengyu, Linskey Mark E, Ratanatharathorn Vaneerat
Primary Institution: University of Arkansas for Medical Sciences
Hypothesis
Can dosimetric equivalency be achieved between Helical Tomotherapy and Gamma Knife Stereotactic Radiosurgery for single brain metastasis?
Conclusion
Dosimetric equivalency was not reached between Helical Tomotherapy and Gamma Knife Stereotactic Radiosurgery.
Supporting Evidence
- Helical Tomotherapy generally shows larger lower isodose line volumes compared to Gamma Knife.
- Treatment times for Helical Tomotherapy are longer than for Gamma Knife.
- Both treatment methods may have prohibitive dose-volume toxicity depending on lesion size.
Takeaway
This study looked at two ways to treat brain tumors and found that one method didn't match the other in terms of how well it delivered radiation.
Methodology
Five patients with single brain metastasis were treated with Gamma Knife and re-planned using Helical Tomotherapy to compare dosimetric outcomes.
Limitations
The study's findings may not apply to all patients due to the small sample size and specific patient selection criteria.
Participant Demographics
Five patients with single brain metastasis, all treated with Gamma Knife prior to Helical Tomotherapy.
Digital Object Identifier (DOI)
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