Objective To evaluate the accuracy of Monaco system intensity-modulated radiation therapy(IMRT)and volumetric modulated arc therapy(VMAT)techniques,through the test cases in the AAPM TG119 report.Methods With the use of test cases provided by the AAPM TG119 report,IMRT plans with 7 or 9 fields and VMAT plans with single or double arcs were designed in the Monaco treatment system,in accordance with the prescription dosage and plan target requirements in the AAPM TG119 report.With the use of IBA MatriXX and Compass for dose validation,the planned results were compared with the results of multicenter testing in the AAPM TG119 report.Results The dose indicators of IMRT and VMAT plans in the system met the requirements of the AAPM TG119 report.The γ passing rate of IMRT plan(3%/2 mm)was(97.85±1.2)%,and the γ passing rate of VMAT plan(3%/2 mm)was(98.74±1.3)%.Conclusion A plan with comparable quality to the IMRT plan based on AAPM TG119 can be designed using the IMRT and VMAT technologies provided by the Monaco system.
维普
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