Machine Definitions

These are the currently proposed definitions of IHE machines for testing. The definitions here have been provided by Varian and are in xml format.

Machine Name IHE_V120 IHE_V120FFF IHE_ELVHD
Machine Model Varian 23EX
or equivalent
Varian 23EX
or equivalent
Elekta VersaHD
Gantry Angle [0°, 360°) 1) [0°, 360°) 2) [0°, 360°)
Collimator Angle [195°, 165°] [195°, 165°] [0°, 360°)
Dose Rate 100-1000 MU/min 3) 100-1400 MU/min 4) 0-400 MU/min
Electron 9 MeV 9 MeV 9MeV
Photon 6, 18 MV 6, 18 MV 6 MV
MLC
MLC Model Millennium 120 Millennium 120 Agility 160
Pairs 60 60 80
Y Offset -195 to 195 mm -195 to 195 mm -197.5 to 197.5 mm
Width 1-10: 10 mm
11-50: 5 mm
51-60: 10 mm
1-10: 10 mm
11-50: 5 mm
51-60: 10 mm
5 mm
X Jaws
Width (none)
Position (none)
Y Jaws
Width
Position
Couch
Vertical Limits -710 to 460 mm -710 to 460 mm -750 to 500 mm
Longitudinal Limits 150 to 1600 mm 150 to 1600 mm 0 to 800 mm
Lateral Limits -250 to 250 mm -250 to 250 mm -250 to 250 mm
Angle 265-95° 265-95° 260 - 100°
Accessories
Applicators Yes Yes Yes
Compensators Yes Yes Yes
Wedges Yes Yes Yes
Blocks Yes Yes Yes
Compensators Yes Yes ?
XML document V120 XML V120FFF XML ELVHD XML

Wedges

Machine Wedge ID
(300A,00D4)
Wedge Angle
(300A,00D5)
Wedge Orientation
(300A,00D6)
Source-to-Wedge Tray Distance
(300A,00DA)
Orientation
(Varian)
Maximum Field Size
IHE_V120 W60R15U 60º 90º 57.4 cm Right 15 cm x 40 cm
W60L15U 270º Left
W60IN15U In
W60OUT15U 180º Out
W30R30U 30º 90º Right 30 cm x 40 cm
W30L30U 270º Left
W30IN30U In
W30OUT30U 180º Out
EDW20IN 20º N/A In 40 cm x 30 cm
EDW20OUT 180º Out
EDW45IN 45º In
EDW45OUT 180º Out
IHE_S160 3HBW15 FIXME
4HBW45 FIXME
1RW15 FIXME
2VW45 FIXME
IHE_ELVHD MW 60º N/A In 21 cm x 16 cm

Blocks

Machine Block Material ID
(300A,00E1)
Block Tray ID
(300A,00F5)
Source-to-Block Tray Distance
(300A,00F6)
Transmission
(300A,0102)
IHE_V120 Block_IHE User X tray 654 mm 0.01
User E tray 950 mm 0.0

Compensators

Machine Compensator Material ID Compensator Tray ID Source-to-Compensator Tray Distance
(300A,00E6)
IHE_V120 Comp_IHE Usr 1X -4 698 mm

Applicators

Machine Applicator ID
(300A,0108)
Applicator Type
(300A,0109)
Applicator Aperture Shape
(300A,0432)
Applicator Opening
(300A,0433)
Source to Applicator Mounting Position Distance
(300A,0436)
IHE_V120 A10 ELECTRON_SQUARE SYM_SQUARE 100 mm 654 mm
20mm Cone PHOTON_CIRC SYM_CIRCULAR 20 mm 654 mm
1) , 2) can rotate clockwise from -185° to +185°
3) Dose rates 800-1000 MU/min indicate SRS primary fluence mode. Do not use for non-SRS beams!
4) Dose rates 800-1400 MU/min indicate SRS or FFF primary fluence mode. Do not use for non-SRS beams!
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