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Update MLC.txt #54

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25 changes: 15 additions & 10 deletions examples/MVLinac/MLC.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -2,15 +2,18 @@
# Reference for geometry: Jabbari et al, J Med Signal Sens 3(3):172-179

########################### Key Parameters In MLC.txt ################################
# The parameters in MLC.txt are intended as defaults to be adjusted in higher level
# parameter control files FullTxHead.txt or Field.txt
#
# Parameters available for adjustment...
# SourceToUpstreamSurfaceDistance: Distance from x-ray target to MLC
# LeafTravelAxis: Direction of jaw travel, either along IEC_B Xb or Yb
# MLC/RotZ: MLC orientation, dependent on direction of leaf travel along IEC_B
# MaximumLeafOpen: Maximum distance permitted for leaf to open on either side of Zb
# Thickness: Thickness of the MLC leaves in Zb
# Length: Length of the MLC leaves in direction of travel
# LeafWidths: Vector of leaf widths, same sequence of leaf widths on each MLC bank
# NegativeFieldSetting: NegativeFieldSetting <= PositiveFieldSetting for opposing leaves
# PositiveFieldSetting: Positive leaf positions projected to isocenter
# NegativeFieldSetting: Negative leaf positions (IEC X1) projected to isocenter <= PositiveFieldSetting
# PositiveFieldSetting: Positive leaf positions (IEC X2) projected to isocenter >= NegativeFieldSetting
#
# Parameters calculated from other parameters...
# SAD: Source to axis distance (isocenter coincides with gantry co-ordinates origin)
Expand All @@ -32,14 +35,16 @@ d:Ge/MLC/DistSourceToSAD = Ge/MLC/SAD - Ge/MLC/SourceToUpstreamSurfaceDistance c
d:Ge/MLC/HalfThickness = 0.5 * Ge/MLC/Thickness cm
d:Ge/MLC/TransZ = Ge/MLC/DistSourceToSAD - Ge/MLC/HalfThickness cm

d:Ge/MLC/LeafTravelAxisX = 0. deg # Constant to help remember angle for X Axis Travel
d:Ge/MLC/LeafTravelAxisY = 90. deg # Constant to help remember angle for Y Axis Travel
d:Ge/MLC/RotZ = Ge/MLC/LeafTravelAxisX deg # Set to one of the above two constants

# MLC leaf widths and positions, projected to isocenter for 10 cm x 20 cm field
# MLC orientation, leaf widths and positions, projected to isocenter
# Default 20 cm wide, 50 cm long field at plane of isocenter (at SAD) with all leaves open
d:Ge/MLC/MLCRotZforTravelAlongIECX = 0. deg # Constant for leaf travel along IEC X axis – DO NOT CHANGE
d:Ge/MLC/MLCRotZforTravelAlongIECY = -90. deg # Constant for leaf travel along IEC Y axis – DO NOT CHANGE
d:Ge/MLC/RotZ = Ge/MLC/MLCRotZforTravelAlongIECY deg # Set to one of the above two constants
# MLC orientation, leaf widths and positions, projected to isocenter for 20 cm x 50 cm field
# IEC leaf number depends on direction of leaf motion: For Xb leaf 1 is first, Yb leaf 1 is last
dv:Ge/MLC/LeafWidths = 42 5. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 5. cm
dv:Ge/MLC/NegativeFieldSetting = 42 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. -5. -5. -5. -5. -5. -5. -5. -5. -5. -5. -5. -5. -5. -5. -5. -5. -5. -5. -5. -5. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. cm
dv:Ge/MLC/PositiveFieldSetting = 42 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. cm
dv:Ge/MLC/NegativeFieldSetting = 42 -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. -10. cm
dv:Ge/MLC/PositiveFieldSetting = 42 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. 10. cm

s:Ge/MLC/DrawingStyle = "Solid"
b:Ge/MLC/PrintInformation = "True"