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Table 4 A comparison of six DVH-based dose parameters obtained from the plan and with those estimated by the 3DVH software

From: Comparison of dose calculations between pencil-beam and Monte Carlo algorithms of the iPlan RT in arc therapy using a homogenous phantom with 3DVH software

PBC algorithm

Target ROI

Periphery ROI

Entire area

Planned dose (cGy)

Estimated dose (cGy)

Planned dose (cGy)

Estimated dose (cGy)

Planned dose (cGy)

Estimated dose (cGy)

Max dose

639

630

629

620

639

631

Mean dose

627

614

114

109

124

119

D99

591

571

8

8

8

8

D90

615

595

12

13

12

13

D50

630

619

109

107

111

110

D1

638

629

516

483

630

618

MCC algorithm

Planned dose (cGy)

Estimated dose (cGy)

Planned dose (cGy)

Estimated dose (cGy)

Planned dose (cGy)

Estimated dose (cGy)

Max dose

670

646

655

628

670

646

Mean dose

614

622

109

109

119

119

D99

572

588

8

8

8

8

D90

596

603

13

13

13

13

D50

619

627

107

106

110

109

D1

630

640

483

488

618

626

  1. Abbreviations: PBC Pencil-beam calculation, MCC Monte Carlo calculation, ROI region of interest, D99 dose covering 99% of the volume, D90 dose covering 90% of the volume, D50 dose covering 50% of the volume, D1 dose covering 1% of the volume.
  2. The estimated dose is calculated based on the ArcCHECK measured data.