Výsledky vyhledávání - "D.J. van der Laan"

Optical simulation of monolithic scintillator detectors using GATE/GEANT4

Autor: D.J. van der Laan, Freek J. Beekman, Marnix C. Maas, Dennis R. Schaart, C.W.E. van Eijk, Peter Bruyndonckx

Publikováno v: Physics in Medicine and Biology, 55, 1659-75
Physics in Medicine and Biology, 55, 6, pp. 1659-75
Physics in Medicine and Biology, 55 (6), 2010

Item does not contain fulltext Much research is being conducted on position-sensitive scintillation detectors for medical imaging, particularly for emission tomography. Monte Carlo simulations play an essential role in many of these research activiti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e513dfe715fe7cf344dc66678c8922c
https://doi.org/10.1088/0031-9155/55/6/009

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Evaluation of Machine Learning Algorithms for Localization of Photons in Undivided Scintillator Blocks for PET Detectors

Autor: M. Krieguer, Dennis R. Schaart, P. Bruyndonckx, Stefaan Tavernier, Zhi Li, Wang Yonggang, C. Lemaitre, Marnix C. Maas, D.J. van der Laan

Publikováno v: IEEE Transactions on Nuclear Science. 55:918-924

Neural Networks trained with error back propagation Levenberg-Marquardt training (LM), Neural Networks trained with an algebraic method and Support Vector Machines (SVM) were evaluated to extract the position information from measured light distribut

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cff0bb28b2981ecb7a41cafd37b2e8ae
https://doi.org/10.1109/tns.2008.922811

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Towards a continuous crystal APD-based PET detector design

Autor: Dennis R. Schaart, M. Krieguer, Marnix C. Maas, Peter Bruyndonckx, Olivier Devroede, Stefaan Tavernier, D.J. van der Laan, Cedric Lemaitre

Publikováno v: Vrije Universiteit Brussel
CIÊNCIAVITAE

Monolithic scintillator blocks provide an efficient way to significantly increase the sensitivity of high-resolution positron emission tomography (PET) systems. Using statistical or neural network-based positioning schemes, the measured intrinsic det

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::046a3893923feb79af05473964d28ead
https://doi.org/10.1016/j.nima.2006.10.058

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Investigation of an in situ position calibration method for continuous crystal-based PET detectors

Autor: Peter Bruyndonckx, Dennis R. Schaart, Marnix C. Maas, M. Krieguer, Olivier Devroede, Cedric Lemaitre, D.J. van der Laan, Stefaan Tavernier

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 571:304-307

The absence of very small crystal pixels in monolithic scintillation detectors has a number of potential advantages such as higher sensitivity, better energy resolution and continuous coordinates. In such detectors, the photon incidence position on t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::03fb8e2bbf942d927058135160ba44d2
https://doi.org/10.1016/j.nima.2006.10.088

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Initial Characterization of a Nonpixelated Scintillator Detector in a PET Prototype Demonstrator

Autor: Dennis R. Schaart, Olivier Devroede, Marnix C. Maas, Yibao Wu, M. Krieguer, C. Lemaitre, Stefaan Tavernier, P. Bruyndonckx, S. Leonard, D.J. van der Laan

Publikováno v: IEEE Transactions on Nuclear Science. 53:2543-2548

Previous experimental results have demonstrated that a PET detector module based on a 20times10times10 mm LSO block read out by a Hamamatsu S8550 APD array is able to determine the impinging position of perpendicularly incident 511-keV photons with a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eb23a85f465fdee8d11d81e0cf9c6c06
https://doi.org/10.1109/tns.2006.875998

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Limits on the spatial resolution of monolithic scintillators read out by APD arrays

Autor: Dennis R. Schaart, Peter Bruyndonckx, Marnix C. Maas, D.J. van der Laan

Publikováno v: Physics in Medicine and Biology, 57, 6479-6496
Physics in Medicine and Biology, 57, pp. 6479-6496

Item does not contain fulltext Cramér-Rao theory can be used to derive the lower bound on the spatial resolution achievable with position-sensitive scintillation detectors as a function of the detector geometry and the pertinent physical properties

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4d1066ae495e1cfbbdba544cb7647f2
http://hdl.handle.net/2066/108517

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Monolithic scintillator PET detectors with intrinsic depth-of-interaction correction

Autor: Cedric Lemaitre, Marnix C. Maas, Freek J. Beekman, D.J. van der Laan, Carel W.E. van Eijk, Dennis R. Schaart, Peter Bruyndonckx

Publikováno v: Physics in Medicine and Biology, 54 (7), 2009

We developed positron emission tomography (PET) detectors based on monolithic scintillation crystals and position-sensitive light sensors. Intrinsic depth-of-interaction (DOI) correction is achieved by deriving the entry points of annihilation photon

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0de70a3309650b3e710829feaf558ce
https://pubmed.ncbi.nlm.nih.gov/19265203

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