[Gate-users] sobp

[David Sarrut]

You need an optimization process to compute the weight (intensities) of all
spots such that their weighted sum lead to the targeted SOBP. Such
optimization is not provided with GATE, you need to refer a commercial TPS
(Treatment Planning System) to read weights in the produced DICOM file, or
implement your own.

You can refer to this article to understand how to get that weight :
http://www.ncbi.nlm.nih.gov/pubmed/11098905

best,
David


On Fri, Oct 18, 2013 at 7:31 AM, David Sarrut <david.sarrut at gmail.com>wrote:

> You need an optimization process to compute the weight (intensities) of
> all spots such that their weighted sum lead to the targeted SOBP. Such
> optimization is not provided with GATE, you need to refer a commercial TPS
> (Treatment Planning System) to read weights in the produced DICOM file, or
> implement your own.
>
> You can refer to this article to understand how to get that weight :
> http://www.ncbi.nlm.nih.gov/pubmed/11098905
>
> best,
> David
>
>
> Le 18 oct. 2013 à 00:08, Ahmed Elmekawy <ahmedfelmekawy at gmail.com> a
> écrit :
>
>  Dear All,
>
> I know Jefferson is right, this is the definition for the SOBP to collect
> all pristine Bragg peak and defined the energy and weight factor for all
> peak i will use but my question how I can it by Gate,thanks.
>
> Best Regards,
> Ahmed
>
>
> On Thu, Oct 17, 2013 at 10:17 AM, Loic Grevillot <loic.grevillot at gmail.com
> > wrote:
>
>> Dear Ahmed,
>>
>> Jefferson is right, a SOBP is simply a collection of Pristine Bragg peaks.
>> First you have to simulate a set depth-doses, with an energy step of a
>> few MeV in between each energy (1 or 2 mm steps in range for instance
>> between 2 peaks).
>> Then you have to sum the peaks with different weight in order to build a
>> flat SOBP.
>>
>> Sincerely,
>>
>> Loïc
>>
>>
>> Loïc
>>
>>
>> 2013/10/17 Ahmed Elmekawy <ahmedfelmekawy at gmail.com>
>>
>>> Hi Jefferson,
>>>
>>> I used example 6 for the pencil proton beam,do you have any idea how I
>>> can make it,Thanks.
>>>
>>> Best Regards,
>>> Ahmed
>>>
>>>
>>> On Thu, Oct 10, 2013 at 4:22 PM, Jefferson <jefferson.sorriaux at gmail.com
>>> > wrote:
>>>
>>>> Dear Ahmed,
>>>>
>>>> You can do several simulations changing the energy of your incident
>>>> protons and weight the simulation results (pristine bragg peak) at the end
>>>> to obtain a flat sobp.
>>>>
>>>> Regards,
>>>>
>>>>
>>>> 2013/10/10 Ahmed Elmekawy <ahmedfelmekawy at gmail.com>
>>>>
>>>>> Dear Gate User,
>>>>>
>>>>> I just have a question about the sobp ?,I am trying to do the the sobp
>>>>> for the beam through the water phantom by Gate, I am able to do the
>>>>> pristine peak but how I can do the sobp by gate,
>>>>>
>>>>> Best Regards,
>>>>> Ahmed
>>>>>
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>>>>>
>>>>
>>>>
>>>
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>>
>>
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-- 
David Sarrut, Phd
Directeur de recherche CNRS
CREATIS, UMR CNRS 5220, Inserm U 1044
Centre de lutte contre le cancer Léon Bérard
28 rue Laënnec, 69373 Lyon cedex 08
Tel : 04 78 78 51 51 / 06 74 72 05 42
http://www.creatis.insa-lyon.fr/~dsarrut
_________________________________
 "2 + 2 = 5,  for extremely large values of 2"
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