Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Bernd Menser"'
Autor:
Artur Omar, Michael Söderman, Fredrik Ståhl, Paul Withagen, Erik Hummel, Axel Thran, Dirk Schäfer, Peter van de Haar, Bernd Menser, Gavin Poludniowski, Åke Holmberg, Anna Falk Delgado, Fred van Nijnatten
Publikováno v:
Medical Physics
PURPOSE Conventional cone-beam computed tomography CT (CBCT) provides limited discrimination between low-contrast tissues. Furthermore, it is limited to full-spectrum energy integration. A dual-energy CBCT system could be used to separate photon ener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50048b06dcd9e088e18f5413f0091b33
Publikováno v:
Medical Imaging 2020: Physics of Medical Imaging.
We report on the modeling, characterization, benchmarking, and optimization of an interventional cone beam CT system based on a dual layer X-ray detector by means of physics based simulations. By Monte Carlo methods, we log the interaction and dose d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77f5d3a925eb9bd6a60fced4cf04f449
https://doi.org/10.1117/12.2549633
https://doi.org/10.1117/12.2549633
Publikováno v:
Radiation Protection Dosimetry. 169:308-312
The aim of this work was to experimentally compare the contrast improvement factors (CIFs) of a newly developed software-based scatter correction to the CIFs achieved by an antiscatter grid. To this end, three aluminium discs were placed in the lung,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5eae33ffe6dd5455bbd12d97491dc7a5
https://doi.org/10.1093/rpd/ncv432
https://doi.org/10.1093/rpd/ncv432
Publikováno v:
Radiation protection dosimetry. 169(1-4)
In paediatric radiography, according to the as low as reasonably achievable (ALARA) principle, the imaging task should be performed with the lowest possible radiation dose. This paper describes a Monte-Carlo simulation framework for dose optimisation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1ed92634bc340a75b6aa22dda2fe4fe
https://pubmed.ncbi.nlm.nih.gov/26628612
https://pubmed.ncbi.nlm.nih.gov/26628612
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 591:291-295
In current X-ray detectors, spatial resolution is limited by optical photon diffusion in the scintillator layer. A method to prevent photons from reaching neighboring pixels is the embedding of opa ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e1a59f5298e2a6b596ace4579940b30
https://doi.org/10.1016/j.nima.2008.03.077
https://doi.org/10.1016/j.nima.2008.03.077
Autor:
Günter Zeitler, Roger Steadman, Ewald Roessl, Christian Bäumer, Gerhard Martens, Bernd Menser, Jens-Peter Schlomka
Publikováno v:
IEEE Transactions on Nuclear Science. 55:1785-1790
A counting-mode line detector has been evaluated at a synchrotron radiation source in order to assess its performance for imaging applications. The x-ray detector is based on 3 mm thick CdZnTe arrays with 1 mm pixel pitch and multi-threshold counting
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5581e0f392e81b9ff3c9bfa045da7c36
https://doi.org/10.1109/tns.2008.924083
https://doi.org/10.1109/tns.2008.924083
Publikováno v:
Medical Physics. 35:968-981
The need for fine detail visibility in various applications such as dental imaging, mammography, but also neurology and cardiology, is the driver for intensive efforts in the development of new x-ray detectors. The spatial resolution of current scint
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::157c68bc545384f33f3d4be193369258
https://doi.org/10.1118/1.2839441
https://doi.org/10.1118/1.2839441
Publikováno v:
Medical physics. 35(3)
The need for fine detail visibility in various applications such as dental imaging, mammography, but also neurology and cardiology, is the driver for intensive efforts in the development of new x-ray detectors. The spatial resolution of current scint
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::5afc8fc5c2dd3ab264e99f286f10f064
https://pubmed.ncbi.nlm.nih.gov/18404933
https://pubmed.ncbi.nlm.nih.gov/18404933
Publikováno v:
Medical Imaging 2005: Physics of Medical Imaging.
The detective quantum efficiency (DQE) is regarded as a suitable parameter to assess the global imaging performance of an x-ray detector. However, residual signals increase the signal-to-noise ratio and therefore artificially increase the measured DQ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0f5fa26ac502d15b8b9b31a652866dc
https://doi.org/10.1117/12.594518
https://doi.org/10.1117/12.594518
Autor:
Gerd Much, Martin J. Powell, Augusto Nascetti, Detlef U. Wiechert, Bernd Menser, Anthony R. Franklin, Stefan Peter Grabowski, Michael Overdick, Ronald A. Ford, Matthias Simon
A flat X-ray detector with lead oxide (PbO) as direct conversion material has been developed. The material lead oxide, which has a very high X-ray absorption, was analysed in detail including Raman spectroscopy and electron microscopy. X-ray performa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c88f1c5698b5d5fb0000f2719100087
http://hdl.handle.net/11573/57189
http://hdl.handle.net/11573/57189
