[gate-users] PET simulations duration

[pasantos at bwh.harvard.edu]

Thank you,

your experience is precious and it will really help me to decide based on
your information and on the resources that i have available right now.

Paula


> For my experience, but others may have experienced something else, it
> seems to me that there is a factor 10 (yep!) when using a voxelized
> phantom compared to using an analytically defined geometry.
>
> But again, it's my understanding and own feeling of using GATE.
>
> Corinne
>
> Paula Alexandra Santos wrote:
>
>> Hi Corinne,
>>
>>
>>
>> Thank you very much for your answer, this is exactly the information I
>> was looking for. Can I ask you something else? Have you run
>> simulations using realistic phantoms, of the torso for example? Would
>> you know how much time it would take in this case?
>>
>>
>>
>> Again thank you very much,
>>
>> Paula
>>
>>
>>
>>
>>
>> -----Original Message-----
>> *From:* gate-users-bounces at lphe1pet1.epfl.ch
>> [mailto:gate-users-bounces at lphe1pet1.epfl.ch] *On Behalf Of *Corinne J
>> Groiselle
>> *Sent:* Friday, December 03, 2004 3:39 PM
>> *To:* GATE feedback and helpline for Users
>> *Subject:* Re: [gate-users] PET simulations duration
>>
>>
>>
>> Hi,
>>
>> I am running GATE on an AMD Opteron (64-bits) 1.4 GHz cluster with 2
>> Go of RAM per dual-processor.
>>
>> To have a clinically realistic simulation of an F-18 acquisition (@
>> NEC peak - 2 min scan), it takes 15h to 24h depending on the size of
>> the object on 120 CPUs.
>>
>> For example, I have ~24 million total coincidences in a 70-cm long,
>> 20-cm diameter cylinder filled with water and 5.8 mCi of F-18 for a
>> 2-min acquisition (the simulation takes 15h x 120 CPUs).
>>
>> Hope this helps,
>> Corinne
>>
>> pasantos at bwh.harvard.edu <mailto:pasantos at bwh.harvard.edu> wrote:
>>
>>Dear all,
>>
>>
>>
>>I am trying to decide if I should use GATE to simulate PET acquisitions
>>
>>with I-124 but, before I can actually install GATE and try it myself, I
>>
>>would need to have an idea of the duration of a simulation either with
>>
>>F-18 or I-124.
>>
>>
>>
>>Could you experienced users please tell me what kind of workstations you
>>
>>are using and how much time it takes to run a simulation of a determined
>>
>>number of events considering simple object geometries?
>>
>>
>>
>>I would really appreciate all the information you could provide me with.
>>
>>
>>
>>Thank you in advance,
>>
>>Paula
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> --
>>
>>
>> Corinne J. Groiselle, PhD
>>
>> Research Instructor
>>
>> Department of Radiology / Division of Nuclear Medicine
>> University of Massachusetts Medical School
>> 55 Lake Avenue North
>> Worcester, MA 01655
>> USA
>>
>> _Phone_: (508)-856-6123 - _fax_: (508)-856-4572
>> _Email_: Corinne.Groiselle at umassmed.edu
>> <mailto:Corinne.Groiselle at umassmed.edu> _
>> Professional homepage_: http://users.umassmed.edu/corinne.groiselle
>> _Official UMASS faculty page_:
>> http://www.umassmed.edu/faculty/show.cfm?faculty=731
>> _Personal homepage_: http://corinne.groiselle.free.fr
>>
>>
>>
>
> --
>
> Corinne J. Groiselle, PhD
> Research Instructor
>
> Department of Radiology / Division of Nuclear Medicine
> University of Massachusetts Medical School
> 55 Lake Avenue North
> Worcester, MA 01655
> USA
>
> _Phone_: (508)-856-6123 - fax: (508)-856-4572
> _Email_: Corinne.Groiselle at umassmed.edu _
> Professional homepage_: http://users.umassmed.edu/corinne.groiselle
> Official UMASS faculty page:
> http://www.umassmed.edu/faculty/show.cfm?faculty=731
> _Personal homepage_: http://corinne.groiselle.free.fr
>
>
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> gate-users at lphe1pet1.epfl.ch
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>


-- 
Paula Alexandra Santos
Brigham & Women's Hospital
TEL: 617 525 6629
FAX: 617 732 6695