This program interpolates the TMR, scatter factors, and off-axis factors tables that are in clinical use at the Radiation Oncology Department of Fox Chase Cancer Center, Philadelphia.

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

Enhanced Dynamic Wedge
Varian

Photon beam energy
Wedge angle
Stationary jaw position Yf
Calculation pioint Y0

Wedge factor WF=

Off-axis distance calculation tool

Coordinate system:

X Y Z
Isocenter:
Calc. point:
Gantry: Couch:

Off-axis distance: cm

Fox Chase Cancer Center

Photon MU Calculation Worksheet

Rx dose: cGy in fraction = cGy/fx

Linac Vendor:   Number of fields:

Field Number
Description
Energy (MV)
SSD (cm)
Collimator width X (cm)
Collimator width Y (cm)
Collimator Eq. Sq. (cm)
Block info
Effective Eq. Sq. (cm)
Depth (cm)
Eq. path length (cm)
Off-axis distance (cm) calc
Plan Dose, Dp
Plan MU (MUp)
Tissue-maximum-ratio [TMR]
Total scatter factor [Scp]
  Collimator scatter factor [Sc]
Patient scatter factor [Sp]
Wedge factor [WF] calc
Tray factor [TF]
Inverse-square law [IVS]
Output correction factor [OCF]
Off-axis factor [OAF]
Calculated MU (MUc)
Calculated Dose, Dc (cGy/fx)
Rel. Diff. (Dc-Dp)/Dp ( % )
Total Plan Dose TDp (cGy/fx)
Total Calculated Dose TDc (cGy/fx)
Rel. Diff. (TDc-TDp)/TDp ( % )

Physicist:    Date: