Results 11 to 20 of about 258 (109)

Performance evaluation of a PET insert for preclinical MRI in stand-alone PET and simultaneous PET–MRI modes [PDF]

EJNMMI Physics, 2021
Background This study aimed to evaluate the performance of a preclinical PET insert in three configurations: as a stand-alone unit outside the MRI bore, inside the bore of a cryogen-free 3T MRI and, finally, while performing simultaneous PET/MRI studies.
Gaelle Emvalomenos, Sofie Trajanovska, Binh T. T. Pham, Peter Doughty, Jerome Burnet, Isabelle Smith, Ruslan Garipov, Marie-Claude Gregoire, Nana Sunn, John McGrath, Steven R. Meikle   +10 more
doaj   +2 more sources

Performance evaluation of the nanoScan® P123S total-body PET [PDF]

EJNMMI Physics
Purpose Before utilising preclinical Position Emission Tomography (PET) systems for biological studies, evaluating their performance is important to better qualify the scanner’s applications.
Dániel Réti, Carlos-Alcaide Corral, Islay Cranston, Victoria J. M. Reid, Kerry M. O’Rourke, Timaeus E. F. Morgan, Axel Montagne, Maurits A. Jansen, Valeria K. Burianova, Andrew Sutherland, Péter Major, Kálmán Nagy, Gergő Bagaméry, Adriana A. S. Tavares   +13 more
doaj   +2 more sources

Trapezoidal back projection for positron emission tomography reconstruction [PDF]

EJNMMI Physics
Background In the back projection step of the 3D PET reconstruction, all Lines of Responses (LORs) that go through a given voxel need to be identified and included in an integral.
Dóra Varnyú, Krisztián Paczári, László Szirmay-Kalos   +2 more
doaj   +2 more sources

Assessing PET performance, image quality, and attenuation correction in the presence of RF coils within a 9.4 T MRI for preclinical simultaneous imaging [PDF]

EJNMMI Physics
Background This study evaluates the performance of a positron emission tomography (PET) insert combined with a 9.4 Tesla magnetic resonance (MR) imaging system using three different radiofrequency (RF) coils.
Claudia Kuntner, Joachim Friske, Andrea Stessl, Martin Haas, Lara Luna Breyer, Thomas Wanek, Marcus Hacker, Thomas Helbich, Ivo Rausch   +8 more
doaj   +2 more sources

Performance of nanoScan PET/CT and PET/MR for quantitative imaging of 18F and 89Zr as compared with ex vivo biodistribution in tumor-bearing mice [PDF]

EJNMMI Research, 2021
Introduction The assessment of ex vivo biodistribution is the preferred method for quantification of radiotracers biodistribution in preclinical models, but is not in line with current ethics on animal research.
Marion Chomet, Maxime Schreurs, Ricardo Vos, Mariska Verlaan, Esther J. Kooijman, Alex J. Poot, Ronald Boellaard, Albert D. Windhorst, Guus AMS van Dongen, Danielle J. Vugts, Marc C. Huisman, Wissam Beaino   +11 more
doaj   +2 more sources

Feasibility of in vivo small animal imaging using a clinical total-body PET/CT system [PDF]

EJNMMI Physics
Background Clinical PET scanners have long been explored for preclinical imaging, but limited spatial resolution and sensitivity have restricted their use for preclinical studies.
Julia G. Mannheim, Wenhong Lan, Maurizio Conti, Franziska Siedler, Marcel A. Krueger, Kristina Herfert, Christian la Fougère, Fabian P. Schmidt   +7 more
doaj   +2 more sources

Prototype Small-Animal PET-CT Imaging System for Image-Guided Radiation Therapy [PDF]

IEEE Access, 2019
Molecular imaging is becoming essential for precision targeted radiation therapy, yet progress is hindered from a lack of integrated imaging and treatment systems.
Ekaterina Mikhaylova, Jamison Brooks, Darren M. Zuro, Farouk Nouizi, Maciej Kujawski, Srideshikan Sargur Madabushi, Jinyi Qi, Mengxi Zhang, Junie Chea, Erasmus K. Poku, Nicole Bowles, Jeffrey Y. C. Wong, John E. Shively, Paul J Yazaki, Gultekin Gulsen, Simon R. Cherry, Susanta K. Hui   +16 more
doaj   +2 more sources

Characterization and optimization of image quality as a function of reconstruction algorithms and parameter settings in a Siemens Inveon small-animal PET scanner using the NEMA NU 4-2008 standards [PDF]

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2011
Abstract The image reconstruction algorithms provided with the Siemens Inveon small-animal PET scanner are filtered backprojection (FBP), 3-dimensional reprojection (3DRP), ordered subset expectation maximization in 2 or 3 dimensions (OSEM2D/3D) and maximum a posteriori (MAP) reconstruction. This study aimed at optimizing the reconstruction parameter
Otto Boerman, Dr Wim J G Oyen
exaly   +2 more sources

COMP Report: CPQR technical quality control guidelines for use of positron emission tomography/computed tomography in radiation treatment planning. [PDF]

J Appl Clin Med Phys, 2022
Abstract Positron emission tomography with x‐ray computed tomography (PET/CT) is increasingly being utilized for radiation treatment planning (RTP). Accurate delivery of RT therefore depends on quality PET/CT data. This study covers quality control (QC) procedures required for PET/CT for diagnostic imaging and incremental QC required for RTP.
Klein R, Oliver M, La Russa D, Agapito J, Gaede S, Bissonnette J, Rahmim A, Uribe C.   +7 more
europepmc   +2 more sources

Multi-angle acquisition and 3D composite reconstruction for organ-targeted PET using planar detectors. [PDF]

Med Phys
Abstract Background This study investigates a multi‐angle acquisition method aimed at improving image quality in organ‐targeted PET detectors with planar detector heads. Organ‐targeted PET technologies have emerged to address limitations of conventional whole‐body PET/CT systems, such as restricted axial field‐of‐view (AFOV), limited spatial resolution,
Shahi A, Poladyan H, Anashkin E, Komarov B, Baldassi B, Rapley M, Babich A, Bubon O, Reznik A.   +8 more
europepmc   +2 more sources