[Gate-users] trpd parallelbeam fanbeam collimator errors

[Konik, Arda]

Following my earlier question,

1) I noticed that when I dont use visualization ( OGLSX ) trpd and parallebeam collimators dont give any error.
So,
/gate/SPECThead/daughters/insert trpd       and
/gate/SPECThead/daughters/insert parallelbeam
seem to be working fine when the visualization is off.

2)  Although in the users guide there is an example of a fanbeam collimator, I cant activate this using
/gate/SPECThead/daughters/insert fanbeam
parameter value is not listed in the candidate List.
Parameter is out of candidate list (index 0)
Candidates : box sphere cylinder cone polycone axeX axeY axeZ 3axes hexagone ellipso trpd wedge matrix parameterizedBoxMatrix regularMatrix fictitiousVoxelMap fictitiousCylindricalVoxelMap replicaMatrix compressedMatrix parallelepiped parallelbeam collimator


I ll appreaciate if you could clarify these matters.
Thanks,

Arda Konik
UMASS Medical School
Dept. of Radiology


On Oct 18, 2010, at 4:22 PM, Konik, Arda wrote:

Hi,

I am getting these errors when I try to insert trpd / parallelbeam / fanbeam collimators. (Gate v4, Mac OS leopard)

-  trpd
Despite the error shown below, the trapezoidal collimator is still created ( visualized) and my simulations run and i get reasonable outputs.
What are these Boolean errors? Are they harmless ? Can i still rely on my output data.

PreInit> /gate/SPECThead/daughters/insert trpd
/gate/SPECThead/daughters/insert trpd
 Volume of the same name and copy number ("world_P", copy 0) still exists and is being used.
 WARNING: This does not necessarily guarantee it's the same
 volume you originally specified in /vis/scene/add/.
/vis/scene/notifyHandlers scene-0
BooleanProcessor::execute : unknown faces !!!
BooleanProcessor: boolean operation failed

-  parallelbeam
How can I fix the error below ?

PreInit> /gate/SPECThead/daughters/insert parallelbeam
/gate/SPECThead/daughters/insert parallelbeam

*** Break *** segmentation violation
gdb not found, need it for stack trace
Gate(7105,0xa0040500) malloc: *** error for object 0x486abf8: pointer being freed was not allocated
....
....
*** set a breakpoint in malloc_error_break to debug
Gate(7219,0xa0040500) malloc: *** error for object 0x486b9c4: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug


-  fanbeam
Is this not supported in GATE? Is there anyway to include it ?

parameter value is not listed in the candidate List.
Parameter is out of candidate list (index 0)
Candidates : box sphere cylinder cone polycone axeX axeY axeZ 3axes hexagone ellipso trpd wedge matrix parameterizedBoxMatrix regularMatrix fictitiousVoxelMap fictitiousCylindricalVoxelMap replicaMatrix compressedMatrix parallelepiped parallelbeam collimator

Thanks for any opinions,

Arda Konik
UMASS Medical School
Dept. of Radiology







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