[Gate-users] Volume IDs for Generic "Scanner" System

Mon Oct 28 15:23:54 CET 2019

*This is a add-on of my previous message*

Are you using your sensitive volume right ?
Looking at your code, and because you want to do dosimetry, it seems you need to attach your volume as phantomSD and not crystalSD.

The difference between the two sensitive volume are explained here:
https://opengate.readthedocs.io/en/latest/sensitive_detector_concept.html

Also, you don't need to re-forward your message. Let us some time to read/think about your problem ...

Emilie

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Today's Topics:

   1. Re: Volume IDs for Generic "Scanner" System (Josh Knowland)
   2. Re: Volume IDs for Generic "Scanner" System (Emilie Gaudin)

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Message: 1
Date: Mon, 28 Oct 2019 13:04:04 +0000
From: Josh Knowland <jknowland at lucernodynamics.com>
To: "gate-users at lists.opengatecollaboration.org"
        <gate-users at lists.opengatecollaboration.org>
Subject: Re: [Gate-users] Volume IDs for Generic "Scanner" System
Message-ID:
        <BN8PR15MB2865954C82BB5CDDB6D784E5AF660 at BN8PR15MB2865.namprd15.prod.outlook.com>

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Hello all,

Does anyone have an idea about this? How to get volume IDs for singles when using a generic "scanner" system type?

From: Josh Knowland
Sent: Saturday, October 26, 2019 5:50 PM
To: gate-users at lists.opengatecollaboration.org
Subject: Volume IDs for Generic "Scanner" System

All - I am completely stuck.
I'm using a generic "scanner" system type, and would like to have multiple sensitive detectors in a mother volume for internal dosimetry.

If I have two SDs as daughters of the "world", all is OK - I get a singles output file with 0 or 1 in column 7 and 0 for columns 8 through 12 (easily telling me which SD registered the single).

If, however, I have a volume in the world with the two SDs inside it (and daughters of it instead of being daughters of the "world"), I get 0 for all columns 7-12. The simulation does record singles to each SD (based on coordinates), but it just doesn't tell me which volume ID each single is for!

I have attached simple sample code below as well as the output from the singles file.

Any help would be great! Thank you,
Josh

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Message: 2
Date: Mon, 28 Oct 2019 14:09:41 +0000
From: Emilie Gaudin <Emilie.Odette.Gaudin at USherbrooke.ca>
To: "gate-users at lists.opengatecollaboration.org"
        <gate-users at lists.opengatecollaboration.org>
Subject: Re: [Gate-users] Volume IDs for Generic "Scanner" System
Message-ID:
        <YQXPR01MB32405B33F62931CAF481EA67AB660 at YQXPR01MB3240.CANPRD01.PROD.OUTLOOK.COM>

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Hi Josh,

You didn't attached your geometry in your system.
Everything is explained here section 1.3 :
https://opengate.readthedocs.io/en/latest/defining_a_system_scanner_ct_pet_spect_optical.html#different-types-of-systems

Basically your need to put this line at the end of your geometry definition (and before attaching your sensitive detector) for each levels of your system:

systems/SystemName/Level/attach UserVolumeName

for example in your system:

systems/scanner/level1/attach Box1B

systems/scanner/level2/attach BoxB2a

systems/scanner/level3/attach BoxB2b

Good luck,

Emilie

________________________________
De : Gate-users <gate-users-bounces at lists.opengatecollaboration.org> de la part de gate-users-request at lists.opengatecollaboration.org <gate-users-request at lists.opengatecollaboration.org>
Envoyé : 27 octobre 2019 00:43
À : gate-users at lists.opengatecollaboration.org <gate-users at lists.opengatecollaboration.org>
Objet : Gate-users Digest, Vol 161, Issue 28

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