[Castor-users] PSF+TOF reconstruction error

[Hadi Rezaei]

Hi Marina
Thank you for responding
My reconstructed image is Ok and when I imply only TOF (not PSF) I don't
see this warning and the TOF bin is provided in .cdh file however the
different TOF values don't make a difference in image quality. Is this an
issue in the reconstruction process or it is normal?
Thank you
Best
Hai

On Tue, Sep 15, 2020 at 2:46 PM FILIPOVIC PIERUCCI Marina <
Marina.FILIPOVICPIERUCCI at cea.fr> wrote:

> Hi Hadi,
>
> This warning should be related only to TOF, not to the use of PSF. It says
> that your input datafile implies that your scanner has an (almost) infinite
> precision for TOF measurements. If this is the case everything's ok,
> otherwise if your scanner quantizes TOF measurements, you should provide
> the quantization bin or step it in the datafile header (.cdh).
>
> All of this won't really make a difference for the reconstructed image,
> unless the quantization of the TOF measurements is very rough, which is
> probably not the case for your scanner.
>
> Is the reconstructed image OK?
>
> Best
>
> Marina
>
> ------------------------------
> *De :* Castor-users [castor-users-bounces at lists.castor-project.org] de la
> part de Hadi Rezaei [hrezaei.m.ph at gmail.com]
> *Envoyé :* mardi 15 septembre 2020 12:05
> *À :* castor-users at lists.castor-project.org
> *Objet :* [Castor-users] PSF+TOF reconstruction error
>
> Dear CASToR users
> I used TOF + psf for reconstruction a Derenzo phantom but I found this
> warning.
> *"Warning: quantization TOF bin size wrong or not provided, so switching
> to TOF list-mode reconstruction which neglects the quantization TOF bin
> size!"*
> Does it mean that I can not use psf and TOF together in CASTOR??  I need
> to investigate PSF+TOF. How can I do it??
> Any help would be appreciated.
> Best
> Hadi
>
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