Realization of 3D Evaluation Algorithm in Doseguided Radiotherapy
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Graphical Abstract
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Abstract
3D evaluation algorithm instead of 2D evaluation method of clinical dose verification is highly needed for dose evaluation in Doseguided Radiotherapy. 3D evaluation algorithm of three evaluation methods， including Dose Difference， Distance ToAgreement and γ Analysis， was realized by the tool of Visual C++ according to the formula. Two plans were designed to test the algorithm: plan 1 was radiation on equivalent water using square field for the verification of the algorithm’s correctness; plan 2 was radiation on the emulation head phantom using conformal field for the verification of the algorithm’s practicality. For plan 1， the dose difference， in the tolerance range has a pass rate of 100%， the DistanceToAgreement and γ analysis was of a pass rate of 100% in the tolerance range，and a pass rate of 99±1% at the boundary of range. For plan 2， the pass rate of algorithm were 88.35%， 100%，95.07% for the three evaluation methods， respectively. It can be concluded that the 3D evaluation algorithm is feasible and could be used to evaluate 3D dose distributions in Doseguided Radiotherapy.
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