[gate-users] PET simulations duration

[Corinne J Groiselle]

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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