End to End Verification of BrainLAB’s Element Planning System for Intracranial SRS Treatments of Arteriovenous Malformations On Varian TrueBeam
N Shrestha1*, G Narayanasamy1, M Radvany2, F Kalantari1, S Morrill1, Z Su1, F Xia1, (1) Department of Radiation Oncology, University of Arkansas for Medical Sciences, Little Rock, AR (2) Department of Interventional Neuroradiology, University of Arkansas for Medical Sciences, Little Rock, AR
Presentations
PO-GePV-T-421 (Sunday, 7/25/2021) [Eastern Time (GMT-4)]
Purpose: The objective of this work is to perform end-to-end verification test of Brainlab Elements cranial vascular planning module designed for arteriovenous malformation (AVM) treatment.
Methods: A dosimetric end-to-end test was performed using a customized phantom setup. High resolution angiogram, CT, and MRI scan of the phantom was obtained and imported into the Brainlab Elements cranial vascular planning module. A clinical treatment plan with 5 arcs was generated and delivered to the phantom on a Varian TrueBeam STx Linac having HD-MLCs using 6-FFF photons. The delivered dose was verified using a ADCL calibrated ionization chamber placed in the phantom.
Results: The Angio, MRI and the CT scans obtained with the custom-made phantom were fused to generate a treatment plan with SRS Rx dose of 15 Gy. The total dose measured by the ionization chamber and the planned dose agreed within 1%.
Conclusion: An end-to-end dose verification of the Brainlab Elements cranial vascular planning module for intracranial SRS treatments of AVM was successfully performed using a custom-made phantom with <1% measurement uncertainty.
ePosters
Keywords
Artero-venous Malformations, Stereotactic Radiosurgery
Taxonomy
TH- External Beam- Photons: intracranial stereotactic/SBRT
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