NDLI: PET image reconstruction using LOR-OSEM with a 3D spatially variant system matrix

Content Provider	IEEE Xplore Digital Library
Author	Wiant, D.B. Gersh, J.A. Bennett, M.C. Bourland, J.D.
Copyright Year	2009
Description	Author affiliation: Department of Radiation Oncology, Wake Forest University School of Medicine, Winston-Salem, NC 27127 USA (Wiant, D.B.; Gersh, J.A.; Bennett, M.C.; Bourland, J.D.)
Abstract	A point source was used to sample the point spread function (PSF) at over 6000 locations within the field of view (FOV) of a General Electric Discovery ST PET scanner (DST) in 2D high sensitivity acquisition mode. These measurements were used to optimize the derivation of a system matrix for the DST. We found for 2D acquisition mode that a system matrix using a PSF with radial, depth, axial, and azimuthal dependence produced reconstructed images with greatly improved spatial resolution and contrast-noise ratios over the entire FOV, as compared to the use of a geometrically derived system matrix. The main improvements in resolution and contrast-noise resulted from the inclusion of depth dependence in the model, which accounts for large variations in sensitivity in the DST that are due to the septa and a span of 11 present in 2D acquisition. Finally, we determined that exploitation of symmetries, particularly along the axial dimension, allow a system matrix of similar quality to what we achieved with over 6000 samples to be created with just over 1000 samples, i.e. with an almost 80% reduction in sample size.
Starting Page	3752
Ending Page	3758
File Size	1119566
Page Count	7
File Format	PDF
ISBN	9781424439614
ISSN	10957863
DOI	10.1109/NSSMIC.2009.5401881
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Positron emission tomography Image reconstruction Spatial resolution Samarium Detectors Jacobian matrices Reconstruction algorithms Electromagnetic scattering Particle scattering Geometry
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Multi-grid 3D-OSEM reconstruction technique for high resolution rotating-head PET scanners

Spatial resolution of the HRRT PET scanner using 3D-OSEM PSF reconstruction

Background correction strategies for list-mode submillimetre 3D image reconstruction algorithm applied to the high resolution Quad-HIDAC PET system

OSEM-3D reconstruction strategies for the ECAT HRRT

Weighted schemes applied to 3D-OSEM reconstruction in PET

Compact representation of PET 3D system response matrices

Application and Evaluation of a Measured Spatially Variant System Model for PET Image Reconstruction

Materials For Very High Resolution Pet Detectors

Model-based Scatter Correction For Fully 3D PET

PET image reconstruction using LOR-OSEM with a 3D spatially variant system matrix

Similar Documents

Multi-grid 3D-OSEM reconstruction technique for high resolution rotating-head PET scanners

Spatial resolution of the HRRT PET scanner using 3D-OSEM PSF reconstruction

Background correction strategies for list-mode submillimetre 3D image reconstruction algorithm applied to the high resolution Quad-HIDAC PET system

OSEM-3D reconstruction strategies for the ECAT HRRT

Weighted schemes applied to 3D-OSEM reconstruction in PET

Compact representation of PET 3D system response matrices

Application and Evaluation of a Measured Spatially Variant System Model for PET Image Reconstruction

Materials For Very High Resolution Pet Detectors

Model-based Scatter Correction For Fully 3D PET

PET image reconstruction using LOR-OSEM with a 3D spatially variant system matrix