Source code 1:

Example simulation script

1	import opengate as gate
2	sim = gate.Simulation()
3	mm = gate.g4_units.mm
4	MeV = gate.g4_units.MeV
5	patient = sim.add_volume(“Image”, name=“patient”)
6	patient.image = “patient-4mm.mhd”
7	patient.mother = “world”
8	patient.voxel_materials = [
9	[−2000, −900, “G4_AIR”],
10	[−900, −100, “Lung”],
11	[−100, 0, “G4_ADIPOSE_TISSUE_ICRP”],
12	[0, 300, “G4_TISSUE_SOFT_ICRP”],
13	[300, 800, “G4_B-100_BONE”],
14	[800, 6000, “G4_BONE_COMPACT_ICRU”]]
15	patient.set_production_cut(
16	particle_name=“electron”,
17	value=3 * mm)
18	src = sim.add_source(“GenericSource”, name=“p_src”)
19	src.particle = “proton”
20	src.position.type = “sphere”
21	src.position.radius = 10 * mm
22	src.position.translation = [0, 0, −140 * mm]
23	src.n = 1e4 # number of primary particles
24	src.direction.type = “momentum”
25	src.direction.momentum = [0, 0, 1]
26	dose_actor = sim.add_actor(“DoseActor”, “dose”)
27	dose_actor.attached_to = “patient”
28	dose_actor.size = [99, 99, 99]
29	dose_actor.spacing = [2 * mm, 2 * mm, 2 * mm]
30	dose_actor.output_coordinate_system = ‘attached_to_image’
31	dose_actor.translation = [2 * mm, 3 * mm, −2 * mm]
32	for en in [130, 140, 150, 160]:
33	src.energy.mono = en * MeV
34	dose.output_filename = f”patient_energy_{en}.mhd”
35	sim.run(start_new_process=True)