Results 21 to 30 of about 7,015,125 (284)

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

, 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

Influence of image reconstruction protocols on the image quality of a small animal PET scanner using 18F and 11C

Brazilian Journal of Radiation Sciences, 2021
The small animal positron emission tomography (PET) scanner from Molecular Imaging Laboratory (LIM/CDTN) is dedicated to pre-clinical studies on new 18F and 11C-based radiopharmaceuticals and to development of novel applications for well-known ...
João Vitor do Carmo Barbosa, Rodrigo Modesto Gadelha Gontijo, Guilherme Cavalcante de Albuquerque Souza, Bruno Melo Mendes, Juliana Batista da Silva, Marcelo Mamede, Andréa Vidal Ferreira   +6 more
doaj   +1 more source

Performance characteristic of the NIH atlas small animal PET scanner [PDF]

, 2003
[Abstract] AMI International Conference 2003, September 21 - 27, Madrid, Spain: "High Resolution Molecular Imaging: from Basic Science to Clinical Applications"The Advanced Technology Laboratory Animal Scanner (ATLAS) is a small animal positron emission ...
Lee, Injae, Pascau González-Garzón, Javier, Green, Michael V., Zavarzin, V. G., Barbosa, F. J., Desco Menéndez, Manuel, Riboldi, S., Seidel, Jurgen, Johnson, C. A., Vaquero López, Juan José   +9 more
core   +3 more sources

Small-Animal Imaging Using Clinical Positron Emission Tomography/Computed Tomography and Super-Resolution

Molecular Imaging, 2012
Considering the high cost of dedicated small-animal positron emission tomography/computed tomography (PET/CT), an acceptable alternative in many situations might be clinical PET/CT. However, spatial resolution and image quality are of concern.
Frank P. DiFilippo, Sagar Patel, Kewal Asosingh, Serpil C. Erzurum   +3 more
doaj   +1 more source

Imaging Transgene Expression with Radionuclide Imaging Technologies

Neoplasia: An International Journal for Oncology Research, 2000
A variety of imaging technologies are being investigated as tools for studying gene expression in living subjects. Noninvasive, repetitive and quantitative imaging of gene expression will help both to facilitate human gene therapy trials and to allow for
S.S. Gambhir, H.R. Herschman, S.R. Cherry, J.R. Barrio, N. Satyamurthy, T. Toyokuni, M.E Phelps, S.M. Larson, J. Balatoni, R. Finn, M. Sadelain, J. Tjuvajev, R. Blasbergt   +12 more
doaj   +1 more source

Image Quality and Quantitative Accuracy of Small Animal PET Images: Role of Physical Effects Correction and Reconstruction Algorithm [PDF]

Egyptian Journal of Nuclear Medicine, 2012
Positron emission tomography (PET) provides important metabolic information about tracer kinetics. Photon attenuation, scattered radiation, spatial resolution limitation and reconstruction algorithm parameters are variables that influence image quality ...
Magdy Khalil
doaj   +1 more source

Experimental Evaluation of Depth-of-Interaction Correction in a Small-Animal Positron Emission Tomography Scanner

Molecular Imaging, 2010
Human and small-animal positron emission tomography (PET) scanners with cylindrical geometry and conventional detectors exhibit a progressive reduction in radial spatial resolution with increasing radial distance from the geometric axis of the scanner ...
Michael V. Green, Harold G. Ostrow, Jurgen Seidel, Martin G. Pomper   +3 more
doaj   +1 more source

Feasibility Study of a Small Animal PET Insert Based on a Single LYSO Monolithic Tube

Frontiers in Medicine, 2018
There are drawbacks with using a Positron Emission Tomography (PET) scanner design employing the traditional arrangement of multiple detectors in an array format.
Antonio J. Gonzalez, Stuart S. Berr, Gabriel Cañizares, Andrea Gonzalez-Montoro, Abel Orero, Carlos Correcher, Ahmadreza Rezaei, Johan Nuyts, Johan Nuyts, Filomeno Sanchez, Stan Majewski, Jose M. Benlloch   +11 more
doaj   +1 more source

Dynamic PET Image Reconstruction Incorporating Multiscale Superpixel Clusters

IEEE Access, 2021
Dynamic positron emission tomography (PET) image reconstruction is challenging due to the low-count statistics of individual frames. This study proposes a novel reconstruction framework aiming to enhance the quantitative accuracy of individual dynamic ...
Shuangliang Cao, Yuru He, Hongyan Zhang, Wenbing Lv, Lijun Lu, Wufan Chen   +5 more
doaj   +1 more source

Performance Assessment of a Preclinical PET Scanner with Pinhole Collimation by Comparison to a Coincidence-Based Small-Animal PET Scanner [PDF]

Journal of Nuclear Medicine, 2014
PET imaging of rodents is increasingly used in preclinical research, but its utility is limited by spatial resolution and signal-to-noise ratio of the images. A recently developed preclinical PET system uses a clustered-pinhole collimator, enabling high-resolution, simultaneous imaging of PET and SPECT tracers. Pinhole collimation strongly departs from
Matthew D, Walker, Marlies C, Goorden, Katherine, Dinelle, Ruud M, Ramakers, Stephan, Blinder, Maryam, Shirmohammad, Frans, van der Have, Freek J, Beekman, Vesna, Sossi   +8 more
openaire   +2 more sources