Results 31 to 40 of about 7,015,125 (284)

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

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

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

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

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

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

Perfomance analysis of a small animal PET scanner using 68Ga Isotope

Brazilian Journal of Radiation Sciences
In recent years, the use of PET scanners for small animals in preclinical research has been growing in Brazil, due to this fact it is essential to have a quality assurance program to ensure the good performance of these scanners or indicate the need for
Victória Garcia Moreira, Anna Clara Moreira Silva, Rodrigo Modesto Gadelha Gontijo, Andréa Vidal Ferreira   +3 more
doaj   +1 more source

Design of a small animal DOI PET scanner using GATE

, 2021
Positron emission tomography (PET) is one of the powerful in vivo molecular imaging devices to explore the functional and biological mechanisms of rodent models.
1007731, 1007732, Kang, Hangyu
core  

Spatial Resolution of a small animal PET scanner using 68Ga isotope

Brazilian Journal of Radiation Sciences
Nuclear Medicine is a modality that has been growing a lot in Brazil and in the world, bringing new radiopharmaceuticals and technologies for the diagnosis and treatment of diseases, making them more effective and accurate.
Victoria M. Garcia, A. C. M. Silva, Rodrigo Modesto Gadelha Gontijo, Andréa Vidal Ferreira   +3 more
doaj   +1 more source