PET reconstruction artifact can be minimized by using sinogram correction and filtered back-projection technique

• Main Authors: Ashish Kumar Jha, Nilendu C Purandare, Sneha Shah, Archi Agrawal, Ameya D Puranik, Venkatesh Rangarajan
• Format: Article
• Language: English
• Published: Thieme Medical and Scientific Publishers Pvt. Ltd. 2014-05-01
• Series: Indian Journal of Radiology and Imaging
• Subjects: filtered back‑projection; iterative reconstruction; sinogram correction; sinogram repair; streak artifact
• Online Access: http://www.thieme-connect.de/DOI/DOI?10.4103/0971-3026.134379

Filtered Back-Projection (FBP) has become an outdated image reconstruction technique in new-generation positron emission tomography (PET)/computed tomography (CT) scanners. Iterative reconstruction used in all new-generation PET scanners is a much improved reconstruction technique. Though a well-calibrated PET system can only be used for clinical imaging in few situations like ours, when compromised PET scanner with one PET module bypassed was used for PET acquisition, FBP with sinogram correction proved to be a better reconstruction technique to minimize streak artifact present in the image reconstructed by the iterative technique.