Dear CASToR users and developers:
We designed a partial PET scanner but we could not reconstruct the exact image. Is there a limit to the Castor application that cannot reconstruct a partial PET scanner?
Is there any way to reconstruct the partial volume in aCastor ?
Have you heard anything about" look up tables"?
Thank you for your help.
sstute
November 15, 2021, 3:01pm
2
Hi,
In terms of reconstructing images from tomographic data, CASToR can do whatever you tell it to do.
There is not limit, you can even design a “two crystals” PET scanner.
The use of look-up-tables is detailed in the documentation.
The limit for partial PET scanners is physical and not methodological.
Simon
sstute
November 15, 2021, 3:23pm
3
Please always reply to the mailing list as any info could be useful for others.
What method are you talking about, the normalization, the optimization algorithm, or other ?
Yes it can as soon as you have at least 180 degrees of data, otherwise you will need to include prior knowledge into the reconstruction.
Simon
sstute
November 15, 2021, 3:27pm
4
The TOF information also decreases the need for full ring tomographic data.
Simon