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Table 1 ROC analyses using different γ criteria

From: Comparisons of volumetric modulated arc therapy (VMAT) quality assurance (QA) systems: sensitivity analysis to machine errors

Error type

QA system

2 %/2 mm

2 %/3 mm

3 %/2 mm

3 %/3 mm

Angle error

ArcCheck

0.956

0.943

0.955

0.948

Delta4

0.874

0.809

0.844

0.799

EPID 1°

0.963

0.971

0.969

0.987

EPID 2°

0.913

0.930

0.916

0.946

EPID 3°

0.864

0.880

0.870

0.907

MLC error

ArcCheck

0.811

0.833

0.829

0.840

Delta4

0.951

0.923

0.946

0.916

EPID 1°

0.920

0.908

0.928

0.918

EPID 2°

0.905

0.891

0.911

0.907

EPID 3°

0.897

0.887

0.908

0.907

  1. AUC values of each system under different criteria are listed
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Radiation Oncology

ISSN: 1748-717X

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