Results 31 to 40 of about 21,435 (195)

Field of view alignment on a multimodal PET/CT scanner for small animals [PDF]

2007 IEEE Nuclear Science Symposium Conference Record, 2007
This work describes a procedure for the alignment of the fields of view of a multimodal system. Combined PET/CT systems for small-animal imaging usually have two axially displaced fields of view (FOV) that are mechanically aligned only to a certain degree; the remaining errors can impair submillimeter registrations.
Vaquero López, Juan José, Pascau González-Garzón, Javier, Abella García, Mónica, Sisniega, Alejandro, Desco Menéndez, Manuel, Lage Negro, Eduardo   +5 more
openaire   +2 more sources

Imaging in Biomedical Research: Mini-Symposium of the Division for Medicinal Chemistry (DMC) of the Swiss Chemical Society (SCS), at the Department of Chemistry, University of Basel, May 18, 2006

CHIMIA, 2006
Imaging technologies have experienced rapid progress and are currently used widely both in medical diagnostics and in research. Imaging beyond X-ray and standard MRI became established in recent years.
Gerd Folkers, Alumit Ishai, Markus Rudin, Pius August Schubiger, Matthias Bräutigam, Hanns Möhler, Hans Peter Märki   +6 more
doaj   +1 more source

Depth of Interaction Estimation in a Preclinical PET Scanner Equipped with Monolithic Crystals Coupled to SiPMs Using a Deep Neural Network

Applied Sciences, 2020
The scintillation light distribution produced by photodetectors in positron emission tomography (PET) provides the depth of interaction (DOI) information required for high-resolution imaging.
Amirhossein Sanaat, Habib Zaidi
doaj   +1 more source

Comparison of metabolic and functional parameters using cardiac 18F-FDG-PET in early to mid-adulthood male and female mice

EJNMMI Research, 2021
Background In this descriptive study of male and female mice at different weeks of age, we use serial non-invasive cardiac 18F-FDG-PET scans to follow up on metabolic alterations, heart function parameters, and the ECG of both sexes in early to mid ...
Maximilian Fischer, Mathias J. Zacherl, Tobias Weinberger, Ludwig Weckbach, Bruno Huber, Christian Schulz, Steffen Massberg, Peter Bartenstein, Sebastian Lehner, Andrei Todica   +9 more
doaj   +1 more source

Comparative analysis of image quality parameters and spatial resolution of three Small Animal PET scanner in Brazil

Brazilian Journal of Radiation Sciences, 2023
This study evaluated Image Quality (IQ) parameters and spatial resolution (SR) of Triumph® LabPET systems installed in three different Brazilian preclinical molecular imaging centers.
Rodrigo Modesto Gadelha Gontijo, Andréa Vidal Ferreira, Daniele Faria, Carlos Alberto Buchpiguel, Samuel Greggio, Gianina Venturin, Jader Costa, Juliana Silva, Marcelo Mamede   +8 more
doaj   +1 more source

Comparing quantitative image parameters between animal and clinical CT-scanners: a translational phantom study analysis

Frontiers in Medicine
PurposeThis study compares phantom-based variability of extracted radiomics features from scans on a photon counting CT (PCCT) and an experimental animal PET/CT-scanner (Albira II) to investigate the potential of radiomics for translation from animal ...
Abhinay Vellala, Carolin Mogler, Florian Haag, Fabian Tollens, Henning Rudolf, Friedrich Pietsch, Carmen Wängler, Björn Wängler, Stefan O. Schoenberg, Matthias F. Froelich, Alexander Hertel   +10 more
doaj   +1 more source

Noninvasive visualization of the activated alphavbeta3 integrin in cancer patients by positron emission tomography and [18F]Galacto-RGD. [PDF]

PLoS Medicine, 2005
BACKGROUND: The integrin alphavbeta3 plays an important role in angiogenesis and tumor cell metastasis, and is currently being evaluated as a target for new therapeutic approaches.
Roland Haubner, Wolfgang A Weber, Ambros J Beer, Eugenija Vabuliene, Daniel Reim, Mario Sarbia, Karl-Friedrich Becker, Michael Goebel, Rüdiger Hein, Hans-Jürgen Wester, Horst Kessler, Markus Schwaiger   +11 more
doaj   +1 more source

Performance Evaluation of Small Animal PET Scanners With Different System Designs [PDF]

IEEE Transactions on Nuclear Science, 2013
This study evaluated the image quality metrics of small animal PET scanners based upon measured single detector module positioning performance. A semi-analytical approach was developed to study PET scanner performance in the scenario of multiple realizations.
Xiaoli, Li, Adam M, Alessio, Thompson H, Burnett, Thomas K, Lewellen, Roberts, Miyaoka   +4 more
openaire   +2 more sources

Projector Model for Efficient List-Mode Reconstruction in PET Scanners with Parallel Planar Detectors

, 2011
We have developed a new projector model specifically tailored for fast list-mode tomographic reconstructions in Positron emission tomography (PET) scanners with parallel planar detectors.
Sportelli, Giancarlo, Guerra Gutiérrez, Pedro, Andres Santos, Santos Lleo, Andres de, Pedro Guerra, Guerra, P, Juan E. Ortuno, Giancarlo Sportelli, Ortuño Fisac, Juan Enrique, Santos, A., Ortuno, JE   +10 more
core   +1 more source

Scanning multiple mice in a small-animal PET scanner: Influence on image quality

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2010
To achieve high throughput in small-animal positron emission tomography (PET), it may be advantageous to scan more than one animal in the scanner’s field of view (FOV) at the same time. However, due to the additional activity and increase of Poisson noise, additional attenuating mass, extra photon scattering, and radial or axial displacement of the ...
Siepel, F.J., Lier, M.G. Van, Chen, M.L., Disselhorst, J.A., Meeuwis, A.P.W., Oyen, W.J.G., Boerman, O.C., Visser, E.P.   +7 more
openaire   +3 more sources