[Gate-users] Problem with Initialization of Geometry

[Zhengzhi Liu]

Hi Xinjie,

I didn't receive your second message before making the reply. As to
understanding range_atten-brain.dat, it won't hurt to resort to the user
manual before posting the question.

Here is exactly what you are looking for in the user manual:
[image: Screenshot from 2020-04-13 13-01-59.png]



On Mon, Apr 13, 2020 at 12:16 PM Xinjie Cao <xinjie.cao at stonybrook.edu>
wrote:

> Hi Coello,
>
> Thanks for your immediate response, it does help me a lot to understand
> that file with GATE. Thank you!
>
> Best,
>
> On Mon, Apr 13, 2020 at 3:02 PM Límbano Iván López Coello <
> vancoello at gmail.com> wrote:
>
>> Hello Mr Cao
>>
>>
>> the number 4 on the left upper corner indicates the number of structures
>> which are 1 for air and three for water.
>>
>> the numbers in pair of the two columns before the name of the
>> structure indicate the range of the Hounsfield Units that you are
>> segmentanding. the booleans values indicate if you want to show or not
>> these structures.
>>  and the last 4 columns indicate the transparency and color like RGB. I
>> have not work with the last part because usually the graphics consume much
>> computer hardware so it is better to have that resources for calculations.
>>
>> let me know if you have further questions.
>>
>> Best Regards
>>
>> Ivan
>>
>> El lun., 13 abr. 2020 a las 13:48, Xinjie Cao (<xinjie.cao at stonybrook.edu>)
>> escribió:
>>
>>> I guess the problem is about the brain phantom related file,
>>> range_atten-brain.dat as followed:
>>> ```
>>> 4
>>> 0 0 Air false 0.0 0.0 0.0 0.2
>>> 4 4 Water true 1.0 0.0 0.0 0.2
>>> 5 5 Water true 0.0 1.0 0.0 0.2
>>> 14 15 Water true 0.0 0.0 1.0 0.2 ```
>>> Is anyone familiar with this file? Can anybody explain it explicitly?
>>> Like what is the '0' before Air meaning?
>>> Any response will be highly appreciated! Thank you!
>>>
>>> Best,
>>>
>>>
>>>
>>> On Mon, Apr 13, 2020 at 10:12 AM Xinjie Cao <xinjie.cao at stonybrook.edu>
>>> wrote:
>>>
>>>> Dear all,
>>>>
>>>> I am running a simulation with new geometry of our model, but the GATE
>>>> always stucks with following problem:
>>>> ```
>>>> List of initialized processes:
>>>> [Core-0] Initialization of geometry
>>>> GateMaterialDatabase.cc (l.131): GateMaterialDatabase: could not find
>>>> the definition for material '0' in material files
>>>>
>>>> ```
>>>> I am not sure what is the problem with this error, but I have checked
>>>> my macro many times without any definition for material '0'. Has anyone
>>>> ever met this problem before? Any answer will be highly appreciated. Thank
>>>> you!
>>>>
>>>> Best,
>>>>
>>> _______________________________________________
>>> Gate-users mailing list
>>> Gate-users at lists.opengatecollaboration.org
>>> http://lists.opengatecollaboration.org/mailman/listinfo/gate-users
>>
>>
>
> --
> *....................................................*
> *Xinjie Cao*
> *M.E. / Ph.D. student*
> *Research Project Assistant*
> *Department of Electrical and Computer Engineering & Radiology *
> *Novel Medical Imaging Technologies Lab*
> *Health Science Center Level 8*
> *Stony Brook, NY 11794-8460 *
> *Tel: +1 (631)202-9445*
> you.stonybrook.edu/goldan/people/
> *email: **xinjie.cao at stonybroo*k.edu <xinjie.cao at stonybrook.edu>
>
>
> *....................................................*
> It is prohibited to distribute or publish the files attached to any other
> people unless you get permission from the writer himself. All rights
> reserved.
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