[Gate-users] Gate-users Digest, Vol 56, Issue 4

Fri Jan 7 12:44:31 CET 2011

hi,you can try "compressedMatrix","parameterizedBoxMatrix" has question in Gate5.0

高娟
2011-01-07

发件人： gate-users-request at lists.opengatecollaboration.org
发送时间： 2011-01-07 19:33:40
收件人： gate-users at lists.opengatecollaboration.org
抄送： 
主题： Gate-users Digest, Vol 56, Issue 4

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Today's  Topics:

     1.  How  to  create  a  Hoffman  phantom?  (Tsukahara  Tatsuya)

----------------------------------------------------------------------

Message:  1
Date:  Fri,  07  Jan  2011  14:27:41  +0900
From:  Tsukahara  Tatsuya   <Tatsuya.Tsukahara at mc7.seikyou.ne.jp >
To:  gate-users at lists.opengatecollaboration.org
Subject:  [Gate-users]  How  to  create  a  Hoffman  phantom?
Message-ID:   <4D26A44D.4060601 at mc7.seikyou.ne.jp >
Content-Type:  text/plain;  charset=ISO-2022-JP

Hello  dear  Gate-Users,

I  have  installed  gate_v5.0.0_p01  and  geant4.9.1.p03.
And  I'm  simulating  a  PET  system.

Now,  I'm  trying  to  create  a  Hoffman  phantom.
But  I  had  the  following  warnings:
---------------------------------------------------------------------
GateMaterialDatabase:  did  not  load  properties  table  for  material    'Vacuum'.
This  is  only  a  problem  when  OPTICAL  PHOTONS  are  transported  in  this
material.'
---------------------------------------------------------------------
This  kind  of  warning  also  appears  with:  Lung,  Brest,  Plastic.

In  addition,
---------------------------------------------------------------------
GateGeometryVoxelInterfileReader::ReadFile:  WARNING:  voxel  not  added
(material  translation  not  found);  value:  1
---------------------------------------------------------------------
And  finally,
---------------------------------------------------------------------
PANIC!  -  G4SmartVoxelHeader::BuildNodes()
                 Daughter  physical  volume  hof_brainVoxel_PVP
                 is  entirely  outside  mother  logical  volume  hof_brain_L  !!

***  G4Exception  :  InvalidSetup
           issued  by  :  G4SmartVoxelHeader::BuildNodes()
Overlapping  daughter  with  mother  volume.
-------------------------------------------------------------------------

Below  is  the  code  that  I  used  for  the  phantom  and  the  source.
I  read  the  user's  guide  but  I  didn't  understand  which  parameter  I
should  change.
Any  kind  of  hints  or  solutions  to  my  problem  are  appreciated.

Additionally  I  have  troubles  with  "point  source".
I  obtained  correct  data  with  Volume  source  but  I  couldn't  get  enough
counts  with  Point  source.
Code  for  the  point  source  is  after  Hoffman  code.
Any  kind  of  hints  or  solutions  to  this  problem  too  are  appreciated.

Thank  you  for  your  help.

************************************************
?Tohoku  University,  Japan
?Tatsuya  Tsukahara
?E-Mail?Tatsuya.Tsukahara at mc7.seikyou.ne.jp
*************************************************

CODE
======================================================
#PHANTOM
/gate/world/daughters/name  hof_brain
/gate/world/daughters/insert  parameterizedBoxMatrix
/gate/hof_brain/geometry/insertReader  interfile
/gate/hof_brain/interfileReader/insertTranslator  range
/gate/hof_brain/interfileReader/rangeTranslator/readTable  range.dat
/gate/hof_brain/interfileReader/rangeTranslator/describe  1
/gate/hof_brain/interfileReader/readFile  hof3.h33
/gate/hof_brain/placement/setTranslation    0.  0.  0.  mm
/gate/hof_brain/placement/setRotationAxis  1  0  0
/gate/hof_brain/placement/setRotationAngle  0  deg
/gate/hof_brain/attachVoxelPhantomSD

/gate/hof_brain/addOutput  doseOutput
/gate/output/doseOutput/saveUncertainty  true
/gate/output/doseOutput/setFileName  hof_brain_paraDose.bin

#SOURCE
/gate/source/addSource  voxel_brain  voxel

/gate/source/voxel_brain/reader/insert  interfile
/gate/source/voxel_brain/interfileReader/translator/insert  range
/gate/source/voxel_brain/interfileReader/rangeTranslator/readTable
activityRange.dat
/gate/source/voxel_brain/interfileReader/rangeTranslator/describe  1
/gate/source/voxel_brain/interfileReader/readFile  hof3.h33

/gate/source/voxel_brain/setType  backtoback
/gate/source/voxel_brain/gps/particle  gamma
/gate/source/voxel_brain/setForcedUnstableFlag  true
/gate/source/voxel_brain/setForcedHalfLife  6586.2  s
/gate/source/voxel_brain/gps/energytype  Mono
/gate/source/voxel_brain/gps/monoenergy  0.511  MeV
/gate/source/voxel_brain/setPosition      -128.  -128.  -55.  mm
/gate/source/voxel_brain/gps/confine  NULL
/gate/source/voxel_brain/gps/angtype  iso
/gate/source/voxel_brain/dump  1

/gate/source/list

========================================================================
#POINT  SOURCE
/gate/source/addSource  twogamma
/gate/source/twogamma/setActivity  37000000.  becquerel
/gate/source/twogamma/gps/particle  gamma
/gate/source/twogamma/setType  backtoback
/gate/source/twogamma/setAccolinearityFlag  false
/gate/source/twogamma/setAccoValue  0.5  deg
/gate/source/twogamma/gps/centre  0.0  0.0  0.0  mm
/gate/source/twogamma/gps/energytype  Mono
/gate/source/twogamma/gps/monoenergy  0.511  MeV
/gate/source/twogamma/gps/type  Point
#/gate/source/twogamma/gps/type  Volume
#/gate/source/twogamma/gps/shape  Sphere
#/gate/source/twogamma/gps/shape  Cylinder
#/gate/source/twogamma/gps/radius  0.3  mm
#/gate/source/twogamma/gps/halfz  20.  mm
#/gate/source/twogamma/gps/confine  NULL
/gate/source/twogamma/gps/angtype  iso
/gate/source/twogamma/gps/mintheta  90.  deg
/gate/source/twogamma/gps/maxtheta  90.  deg
/gate/source/twogamma/gps/minphi  0.  deg
/gate/source/twogamma/gps/maxphi  360.  deg
/gate/source/list

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End  of  Gate-users  Digest,  Vol  56,  Issue  4
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