Results 31 to 40 of about 20,896 (257)

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

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

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

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

An in vivo multimodal feasibility study in a rat brain tumour model using flexible multinuclear MR and PET systems

EJNMMI Physics, 2020
Background In addition to the structural information afforded by 1H MRI, the use of X-nuclei, such as sodium-23 (23Na) or phosphorus-31 (31P), offers important complementary information concerning physiological and biochemical parameters.
Chang-Hoon Choi, Carina Stegmayr, Aliaksandra Shymanskaya, Wieland A. Worthoff, Nuno A. da Silva, Jörg Felder, Karl-Josef Langen, N. Jon Shah   +7 more
doaj   +1 more source

Optimised motion tracking for positron emission tomography studies of brain function in awake rats. [PDF]

PLoS ONE, 2011
Positron emission tomography (PET) is a non-invasive molecular imaging technique using positron-emitting radioisotopes to study functional processes within the body. High resolution PET scanners designed for imaging rodents and non-human primates are now
Andre Z Kyme, Victor W Zhou, Steven R Meikle, Clive Baldock, Roger R Fulton   +4 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

Clinical, Histopathological, and Molecular Characterization of Pediatric MN1::ZNF341‐Associated Cancer

Pediatric Blood &Cancer, EarlyView.
ABSTRACT A lethal round‐cell malignancy with an MN1::ZNF341 fusion has recently been reported in three infants. Here, we describe four further tumors, three in newborns (including monozygotic twins), and one in an adolescent. Detailed clinical, radiological, and histopathological data differentiate these tumors from their main mimics, neuroblastoma and
Thomas R. W. Oliver, Dyanne Rampling, Barbara Walkowiak, Nathaniel D. Anderson, Manas Dave, Henry Lee‐Six, Sadie Baskind, Pooja Balasubramanian, Glenn Anderson, Conor Parks, Toochi Ogbonnah, Emilia R. Robertson, Simon Hannam, Rohan Verma, John C. Achermann, Liina Palm, Neil Sebire, Thomas Jacques, Tom Watson, Carryl Dryden, Karin Straathof, Mette Jorgensen, Olga Slater, Sam Behjati, Sarita Depani, J. Ciaran Hutchinson   +25 more
wiley   +1 more source