Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Konstantinos Zeimpekis"'
Autor:
Rui Guo, Song Xue, Jiaxi Hu, Hasan Sari, Clemens Mingels, Konstantinos Zeimpekis, George Prenosil, Yue Wang, Yu Zhang, Marco Viscione, Raphael Sznitman, Axel Rominger, Biao Li, Kuangyu Shi
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-9 (2022)
Deep learning-based methods have been proposed to substitute CT-based PET attenuation and scatter correction to achieve CT-free PET imaging. Here, the authors present a simple way to integrate domain knowledge in deep learning for CT-free PET imaging
Externí odkaz:
https://doaj.org/article/2669a4cebe2441658deeaa6f5c04e23d
Autor:
Silvano Gnesin, Christine Kieffer, Konstantinos Zeimpekis, Jean-Pierre Papazyan, Renaud Guignard, John O. Prior, Francis R. Verdun, Thiago V. M. Lima
Publikováno v:
EJNMMI Physics, Vol 7, Iss 1, Pp 1-16 (2020)
Abstract Background We assessed and compared image quality obtained with clinical 18F-FDG whole-body oncologic PET protocols used in three different, state-of-the-art digital PET/CT and two conventional PMT-based PET/CT devices. Our goal was to evalu
Externí odkaz:
https://doaj.org/article/caf7c9b8b5f44c91a53668125662e2f1
Autor:
Marcelo A Queiroz, Gaspar Delso, Scott Wollenweber, Timothy Deller, Konstantinos Zeimpekis, Martin Huellner, Felipe de Galiza Barbosa, Gustav von Schulthess, Patrick Veit-Haibach
Publikováno v:
PLoS ONE, Vol 10, Iss 7, p e0128842 (2015)
PurposeTo evaluate the possible activity reduction in FDG-imaging in a Time-of-Flight (TOF) PET/MR, based on cross-evaluation of patient-based NECR (noise equivalent count rate) measurements in PET/CT, cross referencing with phantom-based NECR curves
Externí odkaz:
https://doaj.org/article/92798d224f5846a79795d0af7e58dc79
Autor:
Clemens Mingels, Sabine Weidner, Hasan Sari, Dorothee Buesser, Konstantinos Zeimpekis, Kuangyu Shi, Ian Alberts, Axel Rominger
Publikováno v:
Annals of Nuclear Medicine. 37:310-315
Objective Long axial field-of-view (LAFOV) PET/CT showed improved performance resulting from higher sensitivity. The aim was to quantify the impact of using the full acceptance angle (UHS) in image reconstructions with the Biograph Vision Quadra LAFO
Autor:
Ian Alberts, Robin Schepers, Konstantinos Zeimpekis, Hasan Sari, Axel Rominger, Ali Afshar-Oromieh
Publikováno v:
Alberts, Ian; Schepers, Robin; Zeimpekis, Konstantinos; Sari, Hasan; Rominger, Axel; Afshar-Oromieh, Ali (2023). Combined [68 Ga]Ga-PSMA-11 and low-dose 2-[18F]FDG PET/CT using a long-axial field of view scanner for patients referred for [177Lu]-PSMA-radioligand therapy. European journal of nuclear medicine and molecular imaging, 50(3), pp. 951-956. Springer 10.1007/s00259-022-05961-z
Purpose Performing 2-[18F]FDG PET/CT in addition to a PSMA-ligand PET/CT can assist in the detection of lesions with low PSMA expression and may help in prognostication and identification of patients who likely benefit from PSMA-radioligand therapy (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3eae5ff4bbe10c663e43e02bc37717f
https://boris.unibe.ch/173211/1/s00259-022-05961-z.pdf
https://boris.unibe.ch/173211/1/s00259-022-05961-z.pdf
Autor:
Alexander Maurer, Daniela A. Ferraro, Riccardo Laudicella, Niels J. Rupp, Konstantinos Zeimpekis, Olivio F. Donati, Iliana Mebert, Irene A. Burger, Marcelo Tatit Sapienza, Julian Müller, Daniel Eberli, Hannes Grünig, Jan H. Rueschoff
Publikováno v:
European Journal of Nuclear Medicine and Molecular Imaging. 49:1721-1730
Purpose Prostate-specific membrane antigen (PSMA)-targeted PET is increasingly used for staging prostate cancer (PCa) with high accuracy to detect significant PCa (sigPCa). [68 Ga]PSMA-11 PET/MRI-guided biopsy showed promising results but also persis
Autor:
Valerie Treyer, Martin W. Huellner, Max Hefti, Erika Orita, Philipp A. Kaufmann, Konstantinos Zeimpekis, Martin J. Schuler, Philipp Dutkowski, Lucia Bautista Borrego, Dilmurodjon Eshmuminov, Matteo Mueller, Dustin Becker, Pierre-Alain Clavien
Publikováno v:
Nuclear Medicine Communications. 42:826-832
PURPOSE Ex vivo liver machine perfusion is a promising option to rescue marginal liver grafts mitigating the donated organ shortage. Recently, a novel liver perfusion machine that can keep injured liver grafts alive for 1 week ex vivo was developed a
Autor:
Michael Messerli, Anka Baltensperger, Hannes Grünig, Marcelo Tatit Sapienza, Daniel Eberli, Iliana Mebert, Ashkan Mortezavi, Jan H. Rueschoff, Daniela A. Ferraro, Niels J. Rupp, Olivio F. Donati, Anton S. Becker, Benedikt Kranzbühler, Konstantinos Zeimpekis, Irene A. Burger
Publikováno v:
European Journal of Nuclear Medicine and Molecular Imaging
Purpose Ultrasound-guided biopsy (US biopsy) with 10–12 cores has a suboptimal sensitivity for clinically significant prostate cancer (sigPCa). If US biopsy is negative, magnetic resonance imaging (MRI)–guided biopsy is recommended, despite a low
Autor:
Gaspar Delso, Florian Wiesinger, Konstantinos Zeimpekis, Christian J. Kellenberger, Julia Geiger
Publikováno v:
Pediatric Radiology
Pediatric Radiology, 51 (1)
Pediatric Radiology, 51 (1)
Background MRI of lung parenchyma is challenging because of the rapid decay of signal by susceptibility effects of aerated lung on routine fast spin-echo sequences. Objective To assess lung signal intensity in children on ultrashort echo-time sequenc