Results 61 to 70 of about 604,820 (405)

Direct positron emission imaging: ultra-fast timing enables reconstruction-free imaging [PDF]

arXiv, 2021
Positron emission tomography, like many other tomographic imaging modalities, relies on an image reconstruction step to produce cross-sectional images from projection data. Detection and localization of the back-to-back annihilation photons produced by positron-electron annihilation defines the trajectories of these photons, which when combined with ...
arxiv  

18F-AV-1451 tau PET imaging correlates strongly with tau neuropathology in MAPT mutation carriers [PDF]

, 2016
Tau positron emission tomography ligands provide the novel possibility to image tau pathology in vivo. However, little is known about how in vivo brain uptake of tau positron emission tomography ligands relates to tau aggregates observed post-mortem.
Englund, E. (Elisabet), Hansson, O. (Oskar), Honer, M. (Michael), Ohlsson, T. (Tomas), Puschmann, A. (Andreas), Schöll, M. (Michael), Smith, R. (Ruben), Swieten, J.C. (John) van   +7 more
core   +3 more sources

Estimation of activity of administered 18F-fluorodeoxyglucose by measurement of the dose equivalent rate on the right temporal region of the head

EJNMMI Physics, 2016
Background Positron emission tomography (PET) with 18F-fluorodeoxyglucose (FDG) is now a routine procedure for the management of cancer patients. Intravenous administration of FDG is sometimes halted due to troubles. In such cases, estimations of the FDG
Kenta Sakaguchi, Makoto Hosono, Tomomi Imamura, Naomi Takahara, Misa Hayashi, Yuko Yakushiji, Kazunari Ishii, Tatsuro Uto, Takamichi Murakami   +8 more
doaj   +1 more source

Pulmonary intravascular lymphoma diagnosed by 18-fluorodeoxyglucose positron emission tomography-guided transbronchial lung biopsy in a man with long-term survival: a case report [PDF]

, 2011
Introduction 18-Fluorodeoxyglucose positron emission tomography can detect the pulmonary involvement of intravascular lymphoma that presents no abnormality in a computed tomography scan.
A Aouba, A Kitanaka, AJ Ferreri, Ayako Kobayashi, CA Souza, Fumihiko Kimura, Fumitaka Ohsuzu, Hideo Kobayashi, JA DiGiuseppe, JB West, JM Chang, Katsumi Hayashi, KC Gatter, Kikuo Isoda, Koji Miyazaki, LS Snyder, Masatoshi Kusuhara, S Pamela, Soichiro Kanoh, T Kotake, T Yamagata, Tomiharu Niida, TP Baumann, YH Ko   +23 more
core   +3 more sources

Quantitative Assessment of Coronary Microvascular Function: Dynamic Single-Photon Emission Computed Tomography, Positron Emission Tomography, Ultrasound, Computed Tomography, and Magnetic Resonance Imaging.

Circulation Cardiovascular Imaging, 2017
A healthy, functional microcirculation in combination with nonobstructed epicardial coronary arteries is the prerequisite of normal myocardial perfusion.
A. Feher, A. Sinusas
semanticscholar   +1 more source

The Application of PET/CT in Predicting and Evaluating the Therapeutic Response in Chemotherapy of Solid Tumor

Journal of Isotopes, 2017
Three aspects of the application of PET/CT in solid tumor chemotherapy were summarized, including the selection of evaluation criteria, the proper time of using PET/CT in the evaluation and the parameters of PET/CT in evaluating the response of ...
positron emission tomography solid tumor chemotherapy predicton of therapeutic response
doaj   +1 more source

Cortical Activity During an Attack of Ménière's Disease—A Case Report

Frontiers in Neurology, 2021
Background: Ménière's disease (MD) is a chronic peripheral vestibular disorder with recurrent episodes of vertigo accompanied by fluctuating hearing loss, tinnitus and aural fullness in the affected ear. There are several unanswered fundamental questions
Louise Devantier, Louise Devantier, Allan K. Hansen, Jens-Jacob Mølby-Henriksen, Michael Pedersen, Michael Pedersen, Per Borghammer, Therese Ovesen, Therese Ovesen, Måns Magnusson   +9 more
doaj   +1 more source

The Generalized Multiplicative Gradient Method and Its Convergence Rate Analysis [PDF]

arXiv, 2022
Multiplicative gradient method is a classical and effective method for solving the positron emission tomography (PET) problem. In this work, we propose a generalization of this method on a broad class of problems, which includes the PET problem as a special case. We show that this generalized method converges with rate $O(1/k)$.
arxiv  

Distributions of positron-emitting nuclei in proton and carbon-ion therapy studied with GEANT4 [PDF]

Phys. Med. Biol. 51 (2006) 6099-6112, 2006
Depth distributions of positron-emitting nuclei in PMMA phantoms are calculated within a Monte Carlo model for Heavy-Ion Therapy (MCHIT) based on the GEANT4 toolkit (version 8.0). The calculated total production rates of $^{11}$C, $^{10}$C and $^{15}$O nuclei are compared with experimental data and with corresponding results of the FLUKA and POSGEN ...
arxiv   +1 more source

History and future technical innovation in positron emission tomography

Journal of Medical Imaging, 2017
. Instrumentation for positron emission tomography (PET) imaging has experienced tremendous improvements in performance over the past 60 years since it was first conceived as a medical imaging modality.
T. Jones, D. Townsend
semanticscholar   +1 more source