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To provide a platform for SNMMI members to discuss challenges related to COVID-19, SNMMI has opened an online, e-community for all SNMMI members on SNMMI CONNECT

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  • Hello, re-processing with the scatter correction turned "off" should help that artifact. Sincerely, Phillip ------------------------------ Phillip Kuo MD, PhD University of Arizona College of Medicine-Tucson Tucson AZ -------------------------- ...

  • Hi Yazdan, Do you mean with non-corrected that there was no attenuation correction? I ask, because the image looks like attenuation corrected to me: except for the halo, the background is fairly uniform and there is not "hot skin" effect. If you would ...

  • Hi Yazdan, Could you share your scanner model and recon parameters from either dicom file or from the recon protocol for the non-corrected one? It looks like an overestimation from scatter correction removing all the counts in that region, so maybe ...

  • Filtered back projection can suppress background depending on which filter is used for image reconstruction because some filters subtract activity adjacent to hot areas in an image for example, see Figure 5 in Effect of Filtered Back-Projection ...

  • Dear All, I hope this message finds you well. Recently, I observed an artifact on a Ga68 PET image that appears to be a halo artifact. Surprisingly, it is visible in the non-corrected image. If anyone has faced a similar example or can provide an ...

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