Encrypted login | home

Program Information

Performance Study of the New Delivery System Radixact Using as Benchmark Clinical Plans Generated for Tomotherapy HDA

no image available
T Romaguera

T Romaguera1*, J Bennouna1 , A Gutierrez1 , U Robins1 , G Luciani1 , C Kozarek1 , N Jafari2 , R Vaden2 , (1) Miami Cancer Institute, Miami, FL, (2) Accuray Incorporated, Madison, Winsconsin,


SU-I-GPD-T-494 (Sunday, July 30, 2017) 3:00 PM - 6:00 PM Room: Exhibit Hall

Purpose: To compare the performance of the new delivery system Radixact using as benchmark clinical plans generated for Tomotherapy HDA system.

Methods: The TPS “Precision” was commissioned according to the TG-53 recommendations. Ten Patients plans were developed initially to be treated on Tomotherapy HDA system using “VoLO” for Plan Optimization and Dose Calculation. Different treatment sites were selected. The plans were optimized until the Dose Volume Histograms (DVH) and the dose distribution assessed every slice met the clinical objectives.The Ten Patients were replanned for with TPS “Precision” for comparison. The plans were optimized until the DVHs and the dose distributions closely matched those obtained previously.

Results: The TPS “Precision” produced optimized plans substantially faster than its predecessor. The reduction in “on-beam” time for the new plans is in the range of 20% - 50%.

Conclusion: This study concentrated in the performance evaluation of the new delivery system “Radixact” in comparison with its predecessor using ten patients that were treated in both systems with equivalent plans. The planning process was faster and the treatment beam-on time was reduced due the increase in output (1000 cGy/min at isocenter) up to 50%.

Funding Support, Disclosures, and Conflict of Interest: This work received funding support from Accuray Incorporated

Contact Email: