NDLI: Estimation of detector response function for PET from point source measurements: Effect of point source configuration

Content Provider	IEEE Xplore Digital Library
Author	Tohme, M. Jinyi Qi
Copyright Year	2007
Description	Author affiliation: Univ. of California, Davis (Tohme, M.; Jinyi Qi)
Abstract	The accuracy of the system model in an iterative reconstruction algorithm greatly affects the quality of reconstructed positron emission tomography images. For efficient computation in reconstruction, the system model in PET can be factored into a product of geometric projection and detector response function, where the former is often computed based on analytical calculation, and the latter is estimated using Monte Carlo simulations. Direct measurement of detector response function is difficult in practice because of the requirement of a collimated source. We have developed a method to estimate the 2D detector blurring matrix from point source measurements. A monotonically convergent iterative algorithm was derived to estimate the radial and angular components of the detector blurring matrix while taking into account of the detector block structure and rotational symmetry of modern PET scanners. In this work, we investigate the effect of point source configurations on the detector blurring matrix estimation. The objective is to obtain accurate estimate of the detector response function while reducing the amount of data needed during the measurement. We found that the detector blurring matrix estimation can be viewed as a limited-angle tomography problem. Monte Carlo simulation was used to evaluate the accuracy of the estimated blurring matrices. The number and position of discrete point source measurements as well as the sampling distance and acquisition time was varied. The Monte Carlo simulation results show that sampling distance of the point source has a significant impact on the estimation of the detector blurring matrix and the accuracy of the estimated blurring matrix is spatially variant. The results also show that placing point sources outside the reconstructed field of view is beneficial in some cases.
Starting Page	4422
Ending Page	4425
File Size	244256
Page Count	4
File Format	PDF
ISBN	9781424409228
ISSN	10957863
DOI	10.1109/NSSMIC.2007.4437093
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Detectors Positron emission tomography Image reconstruction Sampling methods Reconstruction algorithms Solid modeling Collimators Iterative algorithms Position measurement Time measurement
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

PET reconstruction with system matrix derived from point source measurements

Fully 3-D PET reconstruction with system matrix derived from point source measurements

Rebinning and reconstruction of point source transmission data for positron emission tomography

PET reconstruction with system matrix derived from point source measurements

Detector-pair-based normalization and realistic wobble correction for positron POSICAM HZ/HZL PET systems

Iterative transmission reconstruction for collimated coincidence point sources in rotating PET systems

Sampling requirements of projection signals in 3D PET

Detector response models for statistical iterative image reconstruction in high resolution PET

Transmission measurements using iterative conebeam reconstruction on the Inveon DPET

Estimation of detector response function for PET from point source measurements: Effect of point source configuration

Similar Documents

PET reconstruction with system matrix derived from point source measurements

Fully 3-D PET reconstruction with system matrix derived from point source measurements

Rebinning and reconstruction of point source transmission data for positron emission tomography

PET reconstruction with system matrix derived from point source measurements

Detector-pair-based normalization and realistic wobble correction for positron POSICAM HZ/HZL PET systems

Iterative transmission reconstruction for collimated coincidence point sources in rotating PET systems

Sampling requirements of projection signals in 3D PET

Detector response models for statistical iterative image reconstruction in high resolution PET

Transmission measurements using iterative conebeam reconstruction on the Inveon DPET

Estimation of detector response function for PET from point source measurements: Effect of point source configuration