title: PET reconstruction artifact can be minimized by using sinogram correction and filtered back-projection technique.
abstract: Filtered Back-Projection (FBP) has become an outdated image reconstruction technique in new-generation positron emission tomography (PET)/computed tomography (CT) scanners.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.
authors.affiliation: Department of Nuclear Medicine and Molecular Imaging, Tata Memorial Hospital, Parel, Mumbai, Maharashtra, India.
authors.forename: Ashish Kumar
authors.initials: AK
authors.lastname: Jha
authors.affiliation: Department of Nuclear Medicine and Molecular Imaging, Tata Memorial Hospital, Parel, Mumbai, Maharashtra, India.
authors.forename: Nilendu C
authors.initials: NC
authors.lastname: Purandare
authors.affiliation: Department of Nuclear Medicine and Molecular Imaging, Tata Memorial Hospital, Parel, Mumbai, Maharashtra, India.
authors.forename: Sneha
authors.initials: S
authors.lastname: Shah
authors.affiliation: Department of Nuclear Medicine and Molecular Imaging, Tata Memorial Hospital, Parel, Mumbai, Maharashtra, India.
authors.forename: Archi
authors.initials: A
authors.lastname: Agrawal
authors.affiliation: Department of Nuclear Medicine and Molecular Imaging, Tata Memorial Hospital, Parel, Mumbai, Maharashtra, India.
authors.forename: Ameya D
authors.initials: AD
authors.lastname: Puranik
authors.affiliation: Department of Nuclear Medicine and Molecular Imaging, Tata Memorial Hospital, Parel, Mumbai, Maharashtra, India.
authors.forename: Venkatesh
authors.initials: V
authors.lastname: Rangarajan
keywords: Filtered back-projection; iterative reconstruction; sinogram correction; sinogram repair; streak artifact