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Analytical calculation of volumes-of-intersection for iterative, fully 3-D PET reconstruction
2006
IEEE Transactions on Medical Imaging
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Therefore, we have developed a fast method for the analytical calculation of the 3-D shape and volume of volumesof-intersection (VOI). ...
The above methods have been applied for a fully 3-D, iterative reconstruction of 3-D sinograms recorded with a Siemens/CTI ECAT HR+ PET scanner. ...
Li, D. Krücker, and E. Rota Kops for valuable discussions, as well as L. Tellmann for technical support. ...
doi:10.1109/tmi.2006.880679
pmid:17024839
fatcat:gfkv7aoptzahvoqbh2vh6wplzy
Iterative Image Reconstruction Using Inverse Fourier Rebinning for Fully 3-D PET
2007
IEEE Transactions on Medical Imaging
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We describe a fast forward and back projector pair based on inverse Fourier rebinning for use in iterative image reconstruction for fully 3-D positron emission tomography (PET). ...
Index Terms-Arc correction, Fourier rebinning, iterative reconstruction, maximum likelihood, three-dimensional (3-D) positron emission tomography (PET). ...
Here, we address the problem of iterating between the fully 3-D data and the 3-D image volume while using Fourier rebinning to reduce computation cost. ...
doi:10.1109/tmi.2006.887378
pmid:17518067
fatcat:zc4zztu6xzgehdgntyixmaxaiy
Rotate-and-Slant Projector for Fast LOR-Based Fully-3-D Iterative PET Reconstruction
2008
IEEE Transactions on Medical Imaging
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One of the greatest challenges facing iterative fully-3-D positron emission tomography (PET) reconstruction is the issue of long reconstruction times due to the large number of measurements for 3-D mode ...
Index Terms Fully-3-D imaging; image reconstruction; positron emission tomography (PET) ITERATIVE statistical reconstruction techniques in positron emission tomography (PET) provide a robust framework ...
A variety of approaches have been proposed for iterative reconstruction of fully-3-D PET data. ...
doi:10.1109/tmi.2008.918328
pmid:18672425
pmcid:PMC2798574
fatcat:7bbbipqztndnxgkufjg7cbyw3q
Modeling and incorporation of system response functions in 3-D whole body PET
2006
IEEE Transactions on Medical Imaging
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The improved system model is applied in a modified ordered subsets expectation maximization (OSEM) algorithm to reconstruct images from rebinned, fully 3-D PET data. ...
Index Terms-Detector response, Fourier rebinning (FORE), fully three-dimensional (3-D) positron emission tomography (PET), system model, system response. ...
ACKNOWLEDGMENT The authors are thankful for image reconstruction conversations with J. Fessler and system modeling conversations with M. Defrise, C. Comtat, and L. Janeiro. ...
doi:10.1109/tmi.2006.873222
pmid:16827484
fatcat:oqukbgekcbab5k6px57wi2rd7q
A new virtual ring-based system matrix generator for iterative image reconstruction in high resolution small volume PET systems
2015
Physics in Medicine and Biology
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The large number of detector elements results in the system matrix -an essential part of statistical iterative reconstruction algorithms -becoming impractically large. ...
A common approach to improving the spatial resolution of small animal PET scanners is to reduce the size of scintillation crystals and/or employ high resolution pixellated semiconductor detectors. ...
The authors would like to thank CSIRO for its financial support for this project.
REFERENCES ...
doi:10.1088/0031-9155/60/17/6949
pmid:26305868
fatcat:qclafu7m6rc55er35xinkobkay
Efficient methodologies for system matrix modelling in iterative image reconstruction for rotating high-resolution PET
2010
Physics in Medicine and Biology
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A fully 3D iterative image reconstruction algorithm has been developed for high-resolution PET cameras composed of pixelated scintillator crystal arrays and rotating planar detectors, based on the ordered ...
At the same time it demonstrates that fully 3D methodologies can be efficiently applied to the image reconstruction problem for high-resolution rotational PET cameras by applying accurate pre-calculated ...
Acknowledgments This work has been partially supported by the CDTEAM project, CENIT programme (Spanish Ministry of Industry) and EMIL (EU Network of Excellence). ...
doi:10.1088/0031-9155/55/7/004
pmid:20224156
fatcat:5nnsdth6x5cyde3zbgppehooju
Performance characteristics of the 3-D OSEM algorithm in the reconstruction of small animal PET images
2000
IEEE Transactions on Medical Imaging
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Rat brain images acquired with a small animal positron emission tomography (PET) camera and reconstructed with the three-dimensional (3-D) ordered-subsets expectation-maximization (OSEM) algorithm with ...
For the same phantoms, object scatter reduced contrast by 3%-5%. ...
ACKNOWLEDGMENT This study utilized the high-performance computational capabilities of the IBM RISC/6000 SP system at the Center for Information Technology, National Institutes of Health, Bethesda, MD. ...
doi:10.1109/42.876305
pmid:11055803
fatcat:sslxxuqadfbmjcnaenomdjmiia
Efficient fully 3D list-mode TOF PET image reconstruction using a factorized system matrix with an image domain resolution model
2014
Physics in Medicine and Biology
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A factorized system matrix utilizing an image domain resolution model is attractive in fully 3D TOF PET image reconstruction using list-mode data. ...
The quantitative results reveal that the factorization model can be as efficient as a nonfactored model such as the analytical model while its computational cost can be much lower. ...
Acknowledgments This work is supported in part by the National Institutes of Health, National Institute of Biomedical Imaging and Bioengineering under grant number R01-EB006085 and R01EB000194. ...
doi:10.1088/0031-9155/59/3/541
pmid:24434568
pmcid:PMC4182441
fatcat:cvqddo7dczb5lmlup2p4w3erby
Fast Fully 3-D Image Reconstruction in PET Using Planograms
2004
IEEE Transactions on Medical Imaging
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This approach is a 3-D extension of the two-dimensional (2-D) linogram technique of Edholm. ...
With software-based Fourier transform calculations we provide preliminary comparisons of planogram backprojection to standard 3-D backprojection and demonstrate a reduction in computation time by a factor ...
ACKNOWLEDGMENT The authors acknowledge D. Newport for advice on the implementation of 3DRP algorithm for sinogram data, and M. ...
doi:10.1109/tmi.2004.824231
pmid:15084067
fatcat:f46f7zxtybfzfd3nraatlpddfa
Relative role of motion and PSF compensation in whole-body oncologic PET-MR imaging
2014
Medical Physics (Lancaster)
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An iterative ordinary Poisson fully 3D OSEM PET reconstruction algorithm modeling all the physical effects of the acquisition (attenuation, scatters, random events, detectors efficiencies, PSF), as well ...
Improved PET images may be obtained by modeling respiratory motion and point spread function (PSF) within the PET iterative reconstruction process. ...
The MC-PSF-OP-OSEM algorithm updating loop is then given by f iter+1 = f iter t D t M T t G T A t BN1 I × t M T t G T B y t BGM t f iter + (A t N) −1 (s c +r) , (5) where D t is the relative duration of ...
doi:10.1118/1.4868458
pmid:24694156
pmcid:PMC3971824
fatcat:v7hndzhnczfu3lfc6tb4o3bwju
Application and Evaluation of a Measured Spatially Variant System Model for PET Image Reconstruction
2010
IEEE Transactions on Medical Imaging
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We present a practical method for measuring the detector blurring component of a whole-body positron emission tomography (PET) system to form an approximate system model for use with fully-3-D reconstruction ...
The purpose of this work is to improve clinical fully-3-D reconstruction without substantially increasing computation time. ...
Acknowledgments The authors are thankful for image reconstruction conversations with K. Thielemans, S. Wollenweber, E. Asma and R. Manjeshwar. The authors would like to thank R. Schmidtlein and A. ...
doi:10.1109/tmi.2010.2040188
pmid:20199927
pmcid:PMC2903538
fatcat:2xici3lgjjfw3fvb3ftasroiyy
NiftyPET: a High-throughput Software Platform for High Quantitative Accuracy and Precision PET Imaging and Analysis
2017
Neuroinformatics
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We present a standalone, scalable and high-throughput software platform for PET image reconstruction and analysis. ...
fully 3D reconstruction and corrections using real data significantly faster. ...
The Florbetapir PET tracer was provided by AVID Radiopharmaceuticals (a wholly owned subsidiary of Eli Lilly & Co). ...
doi:10.1007/s12021-017-9352-y
pmid:29280050
pmcid:PMC5797201
fatcat:n5z6nee3e5gyfhdqgjosprxzhm
Review of Parallel Computing Techniques for Computed Tomography Image Reconstruction
2006
Current Medical Imaging Reviews
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After we briefly review representative analytic and iterative reconstruction algorithms for X-ray computed tomography (CT), we address the need for faster reconstruction by parallel computing techniques ...
For a decent, a cone-beam reconstruction usually takes hours on a regular PC, since most of algorithms take more than 60 iterations even longer. ...
For example, to reconstruct a volume of 512 3 voxels it may use data from 384 projection views with 256 by 512 detectors. ...
doi:10.2174/157340506778777097
fatcat:7x6fzwoq2zbgdkwlias2ydpvcq
Aligning emission tomography and MRI images by optimizing the emission-tomography image reconstruction objective function
2006
IEEE Transactions on Nuclear Science
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accurate registration and 2) a natural framework for calculating joint uncertainties in registration parameters and radiotracer activity. ...
Herein, we consider registration via optimization of a PET/SPECT image-reconstruction objective function which includes the registration parameters. ...
Greer for assistance with the computer system and D. Gilland for use of the Hann-filtering code FIL3D. ...
doi:10.1109/tns.2006.875467
fatcat:p6yhxspuvnd6bkmhdn6vb3nouq
Instrumentation factors affecting variance and bias of quantifying tracer uptake with PET/CT
2010
Medical Physics (Lancaster)
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Similar SDs were observed for both analytic and iterative reconstruction methods ͑p Ն 0.08͒. ...
The authors studied the repeatability and reproducibility of serial PET measures of activity as a function of object size, acquisition, reconstruction, and analysis method on one scanner and at three PET ...
The phantom scans consisted of 20 consecutive 3 min fully 3D acquisitions. ...
doi:10.1118/1.3499298
pmid:21158315
pmcid:PMC2988835
fatcat:7nlb3hiqkbd6bh5v7bmurxy2ka
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