Results 21 to 30 of about 258 (109)

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

Proposal of Brazilian National Program for Quality Control in the small animal PET scanners

Brazilian Journal of Radiation Sciences, 2022
In Brazil, currently there are six preclinical molecular imaging centers and seven different small animal PET systems in use. However, there is still no national specific legislation for research laboratories focused on preclinical molecular images ...
Rodrigo Modesto Gadelha Gontijo
doaj   +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

Comparison of the Performance Evaluation of the MicroPET R4 Scanner According to NEMA Standards NU 4-2008 and NU 2-2001 [PDF]

IEEE Transactions on Nuclear Science, 2012
The purpose of this work was to evaluate the performance of the microPET R4 system for rodents according to the NU 4-2008 standards of the National Electrical Manufacturers Association (NEMA) for small-animal positron emission tomography (PET) systems and to compare it against its previous evaluation according the adapted clinical NEMA NU 2-2001.
Popota, Foteini D., 1980-, Aguiar, Pablo, Herance Camacho, José Raul, Pareto, Deborah, Rojas, Santiago, Ros, Domènec, Pavía Segura, Javier, Gispert, Juan Domingo   +7 more
openaire   +2 more sources

A semi‐monolithic detector providing intrinsic DOI‐encoding and sub‐200 ps CRT TOF‐capabilities for clinical PET applications

Medical Physics, Volume 49, Issue 12, Page 7469-7488, December 2022., 2022
Abstract Background Current clinical positron emission tomography (PET) systems utilize detectors where the scintillator typically contains single elements of 3–6‐mm width and about 20‐mm height. While providing good time‐of‐flight performance, this design limits the spatial resolution and causes radial astigmatism as the depth‐of‐interaction (DOI ...
Florian Mueller, Stephan Naunheim, Yannick Kuhl, David Schug, Torsten Solf, Volkmar Schulz   +5 more
wiley   +1 more source

Morphometric analysis and prioritisation of watersheds for flood risk management in Wadi Easal Basin (WEB), Jordan, using geospatial technologies

Journal of Flood Risk Management, Volume 14, Issue 2, June 2021., 2021
Abstract Morphometric analysis and sub‐watersheds prioritisation were carried out for the Wadi Easal Basin, Jordan, which is characterised by a high topographic diversity. The total ranking method was applied to prioritise the sub‐watersheds in terms of susceptibility to flash flood.
Mutawakil Obeidat, Muheeb Awawdeh, Farah Al‐Hantouli   +2 more
wiley   +1 more source

Image quality evaluation of a small animal PET scanner

Brazilian Journal of Radiation Sciences, 2020
Performance testing of small animal PET scanners is very important to ensure the high performance required for this particular type of PET scanner. In this sense, National Electrical Manufactures Association (NEMA) published its NU 4/2008 standards, a ...
Andréa Vidal Ferreira, Rodrigo Modesto Gadelha Gontijo, Guilherme Cavalcante de Albuquerque Souza, Bruno Melo Mendes, Juliana Batista da Silva, Marcelo Mamede   +5 more
doaj   +1 more source

Quality control of small animal PET scanner: The Brazilian Scenario

Brazilian Journal of Radiation Sciences, 2020
This work aims to evaluate the quality control program for small animal PET (positron emission tomography) scanners in Brazil. A questionnaire focused on type of small animal PET scanner and quality assurance program was prepared and sent to all ...
Rodrigo Modesto Gadelha Gontijo, Andréa Vidal Ferreira, Juliana Batista Silva, Marcelo Mamede   +3 more
doaj   +1 more source

Performance Evaluation of a PET of 7T Bruker Micro-PET/MR Based on NEMA NU 4-2008 Standards

Electronics, 2022
Purpose: This study aimed to measure the performance evaluation of the Bruker sequential micro-positron emission tomography/magnetic resonance imaging (PET/MRI) scanner by following National Electrical Manufacturers Association (NEMA) NU 4-2008 standards’ protocol.
Kishore Doss, Pei Mion, Yu-Chieh Kao, Tsung-Ter Kuo, Jyh-Cheng Chen   +4 more
openaire   +1 more source

NEMA NU 4-2008 Performance Measurements of Two Commercial Small-Animal PET Scanners: ClearPET and rPET-1 [PDF]

IEEE Transactions on Nuclear Science, 2011
In this work, we compare two commercial positron emission tomography (PET) scanners installed at CIEMAT (Madrid, Spain): the ClearPET and the rPET-1. These systems have significant geometrical differences, such as the axial field of view (110 mm on ClearPET versus 45.6 mm on rPET-1), the configuration of the detectors (whole ring on ClearPET versus one
Cañadas Castro, Mario, Embid, Miguel, Desco Menéndez, Manuel, Vaquero López, Juan José, Pérez, José Manuel, Lage Negro, Eduardo   +5 more
openaire   +2 more sources