[Gate-users] Multiple detectors (responses) with Fixed Forced Detection

Simon Rit simon.rit at creatis.insa-lyon.fr
Wed Oct 4 10:31:25 CEST 2017

What I do is record one spectral projection by setting the
energyResolvedBinSize to 1 keV and a detector response d(e)=1 with a text
file that looks like this:
0 1
1 1
I obtain then a 3 image for each run where the 3rd dimension is the energy.
I use this result offline to create the projection of each threshold
I don't know when this option was added wrt to Gate 7.2, you might have to
update your Gate.

On Wed, Oct 4, 2017 at 10:18 AM, Clemens S. <clem.schmid at gmail.com> wrote:

> Dear fellow GATE users,
> I am simulating spectral CT with *Fixed Forced detection* in GATE 7.2. I
> am simulating one physical detector which has several energy threshold,
> i.e. *several detector responses*. Each detector response produces its
> own output (primary and scatter images).
> Up to now, I'm using one FFD actor for each threshold/response. This gives
> correct results, but is not optimally efficient since the interaction
> points are projected onto the detectors indepentently instead of projecting
> once (conserving energy information) and *then* applying the detector
> responses. (or I think that's what's happening)
> *My question is*: Is there a (more) efficient way to simulate several
> detector responses with FFD?
> Thank you for your help!
> Kind regards
> Clemens Schmid
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