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.

Elekta Motorized Wedge

Photon beam energy
Distance along the wedge
Distance across the wedge
Equivalent Square
Depth

Wedge factor WF=

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: