[gate-users] Gate LMF-Sinogram (ECAT7) patch

[Schmidtlein, Ross/Medical Physics]

Hi Long,

I've been listening to the discussions surrounding your implementation
of sinogram output for cylindrical PET, and I am very interested in
seeing you produce these additions.  It is my impression that you're
using Claude's coincidence position binning strategy.  This strategy
works very well for uniformly spaced detectors, but if the detectors are
not uniformly spaced, the sinograms may be incorrect.  Non-uniform
detector spacing is one of the advantages that the "Cylindrical PET"
system has over the "ECAT System".  The logical volume ID's can be used
to avoid this problem.  I have some code that is fairly general that
does this.  I'd be more than happy to send it if you think it will help.


I've glanced through your code and it looks like you have done a really
nice job. ;)

Cheers,

ross

-----Original Message-----
From: gate-users-bounces at lphe1pet1.epfl.ch
[mailto:gate-users-bounces at lphe1pet1.epfl.ch] On Behalf Of
null99 at mails.tsinghua.edu.cn
Sent: Friday, August 13, 2004 12:09 PM
To: gate-users at lphe1pet1.epfl.ch
Subject: [gate-users] Gate LMF-Sinogram (ECAT7) patch


Dear all,

This is the LMF to ECAT7 patch for Gate. Please refer to my previouse
E-mail for details.

Something important:
This version is an test version. It's aim is to provide a base for other
possible conversion. E.g. by using the root output. Also, I looking
forwards any questions, bug reports, or new idea of implement the
conversion. Questiones on conversion theory is esp. highly appreciated!
Thank you!

USAGE:
1. patch it and recompile it.
2. Run Gate on a existing Cylindrical PET system macro file (without any
modification)

It will generate all kinds of output by default: ecat7 file, interfile
head, lmf file, lmf file header, and coincidence file.

Because I am not sure that if my design philosophy valide (By
introducing logical rings and detector number for Cylindrical System,
which is, actually, very similiar to that of a ecat system). So the UI
command is not well supported at present. They might work, I haven't
test it yet.

Thank you!

Regards,

Long



 
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