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Interpolation-Based Reconstruction Methods for Tomographic Imaging in 3D Positron Emission Tomography
2008
International Journal of Applied Mathematics and Computer Science
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Interpolation-Based Reconstruction Methods for Tomographic Imaging in 3D Positron Emission Tomography Positron Emission Tomography (PET) is considered a key diagnostic tool in neuroscience, by means of ...
For this reason, interpolation-based reconstruction methods deserve a thorough investigation, whose crucial parts are the interpolating processes in the 3D frequency domain. ...
Among the broad spectrum of various imaging techniques, Positron Emission Tomography (PET) is regarded as a key diagnostic tool in neuroscience for studying the metabolism function in vivo (Beutel et ...
doi:10.2478/v10006-008-0006-y
fatcat:ls2trjz3j5ayvog7apcagz65ie
Progress in mesh based spatio-temporal reconstruction
2008
Computational Imaging VI
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A CAMM is an efficient image representation based on adaptive sampling and linear interpolation, wherein non-uniform image samples are placed most densely in regions having fine detail. ...
In this paper, we present a new methodology for calculation of a 2D projection operator for emission tomography using a content-adaptive mesh model (CAMM). ...
In the literature a great many methods have been developed for improving the quality of reconstructed images in tomography (see [12] or [13] for a review). ...
doi:10.1117/12.776951
dblp:conf/cimaging/BrankovDYJW08
fatcat:yctd5tprv5gyrfeqzcmkjvi5ku
Defining PET Standardized Uptake Value Threshold for Tumor Delineation with Metastatic Lymph Nodes in Head and Neck Cancer
2012
Japanese Journal of Clinical Oncology
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The regression formula of SUVeq was validated in subsequent 30 positron emission tomographic computed tomography studies. ...
The validation study resulted in a good correlation between the volume of lymph nodes on computed tomography and positron emission tomographic computed tomography (R 2 ¼ 0.93). ...
(b) Positron emission tomography (PET) image fused on CT image. ...
doi:10.1093/jjco/hys049
pmid:22547728
fatcat:wquy54t7vza5fgzmzn7q7puani
Free Software for PET Imaging
[chapter]
2012
Positron Emission Tomography - Current Clinical and Research Aspects
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Starting from an initial guess for the image to reconstruct (for example a constant image or a 2D FBP reconstruction) they make successive improved guesses by projecting and 6 Positron Emission Tomography ...
Aspects www.intechopen.com Free Software for PET Imaging
Positron Emission Tomography -Current Clinical and Research Aspects www.intechopen.com Free Software for PET Imaging
Positron Emission ...
Free Software for PET Imaging, Positron Emission Tomography -Current Clinical and Research Aspects, Dr. ...
doi:10.5772/31882
fatcat:beoywmjmzzcyfkbrgbk7i4z7am
Evaluation of spatial resolution of a PET scanner through the simulation and experimental measurement of the recovery coefficient
2010
Computers in Biology and Medicine
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Purpose: In order to measure spatial resolution of a PET tomograph in clinical conditions, this study describes and validates a method based on the recovery coefficient, a factor required to compensate ...
Methods: In a PET image, the recovery factors of radioactive spheres were measured and their comparison with simulated recovery coefficients yielded the tomographic spatial resolution. ...
Acknowledgment The authors would like to acknowledge the staff of the Cyclotron Unit for radioisotope production and nuclear medicine technologists' support in acquiring the imaging. ...
doi:10.1016/j.compbiomed.2009.11.002
pmid:19959163
fatcat:p7yw56wetrg4bhn3o66rv2e3k4
3D-OSEM iterative image reconstruction for high-resolution PET using precalculated system matrix
2006
Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment
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An efficient iterative image reconstruction methodology is presented, adapted to high-resolution flat-head 3D positron emission tomography cameras. ...
GATE-based simulations have been used for the validation of the results. r ...
Introduction Positron emission tomography (PET) is a powerful imaging technique for functional studies with dynamic and quantitative capabilities that are commonly exploited in human clinical research. ...
doi:10.1016/j.nima.2006.08.067
fatcat:rh7wz42e55bb5idrfz3sbceuka
An Object-Oriented Library for 3D PET Reconstruction Using Parallel Computing
[chapter]
1999
Informatik aktuell
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We present a object-oriented library of C++ features for 3D PET reconstruction. This library has been designed so that it can be used for many algorithms and scanner geometries. ...
As 3D iterative reconstruction algorithms are time consuming, the library contains classes and functions to run parts of the reconstruction in parallel, using parallel platforms with a distributed memory ...
The authors thank their partners within the project for fruitful discussions and useful suggestions. ...
doi:10.1007/978-3-642-60125-5_50
dblp:conf/bildmed/LabbeTBBGHJKLMMMSVZZ99
fatcat:x7yb2on6nbeypbscprquipyjm4
Three-dimensional Image Reconstruction in J-PET Using Filtered Back-projection Method
2017
Acta Physica Polonica B
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We present a method and preliminary results of the image reconstruction in the Jagiellonian PET tomograph. ...
We incorporated the algorithm of the 3D Filtered Back Projection, implemented in the STIR and TomoPy software packages, which differ in approximation methods. ...
(Received September 21, 2017) We present a method and preliminary results of the image reconstruction in the Jagiellonian PET tomograph. ...
doi:10.5506/aphyspolb.48.1757
fatcat:ckvvowx4vreclo2xhrwpq54qhu
Evaluation of partial volume effect correction methods for brain positron emission tomography: Quantification and reproducibility
2007
Journal of Medical Physics
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Keywords: Brain imaging, partial volume effects, positron emission tomography Positron emission tomography (PET) is a medical imaging method that records the simultaneous emission of gamma rays from the ...
Quantitative accuracy of positron emission tomography (PET) is decreased by the partial volume effect (PVE). ...
All three tomographs were operated in the 3D acquisition mode and the images reconstructed with the iterative reconstruction method (OSEM or its variant). ...
doi:10.4103/0971-6203.35723
pmid:21157530
pmcid:PMC3000501
fatcat:u7xy7dwlirbzraqrl7osmnuqhm
Subject index
1999
IEEE Transactions on Medical Imaging
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Vaquero, J.J., + , T-MI Feb 99 184 Positron emission tomography 3D PET, exact rebinning methods. ...
Photomultipliers
Emission tomography; cf. Positron emission tomography; Single photon
emission computed tomography
Encoding; cf. ...
-based eval. of image-proc. and class. methods. Kwan, R.K.-S., + , T-MI Nov. 1999 ...
doi:10.1109/tmi.1999.819331
fatcat:g7ntb6icpzgs7jwncaguherqne
Iterative Tomographic Image Reconstruction Using Fourier-Based Forward and Back-Projectors
2004
IEEE Transactions on Medical Imaging
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Iterative image reconstruction algorithms play an increasingly important role in modern tomographic systems, especially in emission tomography. ...
Interpolation errors are a limitation of Fourier-based reconstruction methods. ...
ACKNOWLEDGMENT The authors would like to thank the reviewers for their detailed comments, and gratefully acknowledge R. M. Lewitt for fruitful discussions and comments on this work. ...
doi:10.1109/tmi.2004.824233
pmid:15084066
fatcat:rb425uid6ndlteqky5yc42kzpm
Direct positron emission imaging: ultra-fast timing enables reconstruction-free imaging
[article]
2021
arXiv
pre-print
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Positron emission tomography, like many other tomographic imaging modalities, relies on an image reconstruction step to produce cross-sectional images from projection data. ...
This is sufficient to directly generate an image without reconstruction and without the geometric and sampling constraints that normally present for tomographic imaging systems. ...
Introduction: Three-dimensional biomedical imaging techniques including x-ray computed tomography (CT) single photon emission computed tomography (SPECT) and positron emission tomography (PET) measure ...
arXiv:2105.05805v1
fatcat:pudneaomfnecraajwdjgk5sxxu
PIXSCAN: Pixel detector CT-scanner for small animal imaging
2007
Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment
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CT image reconstruction in this non-conventional geometry is under study for this purpose. PACs: ...
Despite the relatively large pixel size of this detector (330 x 330 µm 2 ), we can present 3D tomographic reconstruction of mice at good contrast and spatial resolution. ...
In a later stage, plans are to combine this CT scanner with a Positron Emission Tomography (PET) scanner, to allow simultaneous PET/CT imaging of small animals. ...
doi:10.1016/j.nima.2006.10.126
fatcat:h2twbhs3pfhwhi3ucsmqiuvta4
Magnetic Resonance–Based Attenuation Correction for PET/MR Hybrid Imaging Using Continuous Valued Attenuation Maps
2013
Investigative Radiology
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Positron emission tomographic volumes with each of the previously mentioned K-maps were reconstructed, and relative difference images were calculated with respect to K-map CT as the criterion standard. ...
Objectives: Attenuation correction of positron emission tomographic (PET) data is critical in providing accurate and quantitative PET volumes. ...
ACKNOWLEDGMENT The authors gratefully acknowledge the funding from the International Max Planck Research School for Physics of Light (IMPRS-PL). ...
doi:10.1097/rli.0b013e318283292f
pmid:23442772
fatcat:s3icq4mvxnhztlec45tqgegzne
Iterative reconstruction using a Monte Carlo based system transfer matrix for dedicated breast positron emission tomography
2014
Journal of Applied Physics
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To maximize sensitivity, it is desirable that ring Positron Emission Tomography (PET) systems dedicated for imaging the breast have a small bore. ...
The GATE based system matrix reconstruction technique promises to improve resolution and noise performance and reduce image distortion at FOV periphery compared to line-integral based system matrix reconstruction ...
recovery has similarly improved image quality in full-time and half-time Single Photon Emission Computed Tomography (SPECT) imaging compared to noniterative reconstruction technique without resolution ...
doi:10.1063/1.4894085
pmid:25371555
pmcid:PMC4187341
fatcat:tri3pwyqxbb4fozdkyam4pm4cy
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