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gpumcd.simple_example.py
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gpumcd.simple_example.py
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import ctypes,numpy as np,os
import gpumcd
from os import path
import medimage as image
outputdir = "d:\\postdoc\\analyses\\gpumcd_python"
print('Start of program.')
materials=["Water"]
physicsSettings = gpumcd.PhysicsSettings()
planSettings = gpumcd.PlanSettings()
physicsSettings.photonTransportCutoff = 0.01
physicsSettings.electronTransportCutoff = 0.189
physicsSettings.inputMaxStepLength = 0.75
physicsSettings.magneticField = gpumcd.Float3(0,0,0)
physicsSettings.referenceMedium = -1
physicsSettings.useElectronInAirSpeedup = 1
physicsSettings.electronInAirSpeedupDensityThreshold = 0.002
planSettings.goalSfom = 1
planSettings.statThreshold = 0.5
planSettings.maxNumParticles = int(1e13)
planSettings.densityThresholdSfom = 0.2
planSettings.densityThresholdOutput = 0.0472
planSettings.useApproximateStatistics = 1
phantom = gpumcd.Phantom(50*50*50)
phantom.numVoxels.x = 50
phantom.numVoxels.y = 50
phantom.numVoxels.z = 50
phantom.voxelSizes.x = 0.2
phantom.voxelSizes.y = 0.2
phantom.voxelSizes.z = 0.2
phantom.phantomCorner.x = -5.0
phantom.phantomCorner.y = -5.0
phantom.phantomCorner.z = -5.0
nvox = phantom.numVoxels.x*phantom.numVoxels.y*phantom.numVoxels.z
for i in range(nvox):
phantom.massDensityArray[i]=1
phantom.mediumIndexArray[i]=0
lasterror=ctypes.create_string_buffer(1000)
print('Scene definition loaded.')
Engine = gpumcd.__gpumcd__("d:/postdoc/gpumcd_data/dll")
print('libgpumcd loaded, starting gpumcd init...')
print("Engine.get_available_vram(0)",Engine.get_available_vram(0))
print("Engine.estimate_vram_consumption(nvox)",Engine.estimate_vram_consumption(nvox))
n_streams = 1
retval = Engine.init(
0,
0,
gpumcd.str2charp("d:/postdoc/gpumcd_data/materials_clin"),
*gpumcd.strlist2charpp(materials),
physicsSettings,
phantom,
gpumcd.str2charp("d:/postdoc/gpumcd_data/machines/machine_van_sami/brentAgility.beamlets.gpumdt"),
n_streams,
ctypes.byref(lasterror)
)
print('gpumcd init done.')
print(retval,lasterror.value.decode('utf-8'))
BeamFrames = gpumcd.make_c_array(gpumcd.BeamFrame,2)
BeamFrames[0]=gpumcd.BeamFrame(1)
BeamFrames[0].beamInfo[0].relativeWeight = 100
BeamFrames[0].beamInfo[0].isoCenter.x=0
BeamFrames[0].beamInfo[0].isoCenter.y=0
BeamFrames[0].beamInfo[0].isoCenter.z=0
BeamFrames[0].beamInfo[0].collimatorAngle.first=0
BeamFrames[0].beamInfo[0].collimatorAngle.second=0
BeamFrames[0].beamInfo[0].couchAngle.first=0
BeamFrames[0].beamInfo[0].couchAngle.second=0
BeamFrames[0].beamInfo[0].gantryAngle.first=0
BeamFrames[0].beamInfo[0].gantryAngle.second=0
BeamFrames[0].beamInfo[0].fieldMax.first=2
BeamFrames[0].beamInfo[0].fieldMax.second=2
BeamFrames[0].beamInfo[0].fieldMin.first=-2
BeamFrames[0].beamInfo[0].fieldMin.second=-2
BeamFrames[1]=gpumcd.BeamFrame(1)
BeamFrames[1].beamInfo[0].relativeWeight = 100
BeamFrames[1].beamInfo[0].isoCenter.x=0
BeamFrames[1].beamInfo[0].isoCenter.y=0
BeamFrames[1].beamInfo[0].isoCenter.z=0
BeamFrames[1].beamInfo[0].collimatorAngle.first=0
BeamFrames[1].beamInfo[0].collimatorAngle.second=0
BeamFrames[1].beamInfo[0].couchAngle.first=0
BeamFrames[1].beamInfo[0].couchAngle.second=0
BeamFrames[1].beamInfo[0].gantryAngle.first=90
BeamFrames[1].beamInfo[0].gantryAngle.second=90
BeamFrames[1].beamInfo[0].fieldMax.first=1
BeamFrames[1].beamInfo[0].fieldMax.second=1
BeamFrames[1].beamInfo[0].fieldMin.first=-1
BeamFrames[1].beamInfo[0].fieldMin.second=-1
print('executing simulation...')
retval = Engine.execute_beamlets(
*gpumcd.c_array_to_pointer(BeamFrames,True),
planSettings
)
print(retval)
dose = image.image(DimSize=[50,50,50], ElementSpacing=[0.2,0.2,0.2], dt='<f4')
Engine.get_dose(dose.get_ctypes_pointer_to_data())
dose.saveas(path.join(outputdir,'dose.xdr'))
dose.saveas(path.join(outputdir,'dose.mhd'))