Results 21 to 30 of about 1,753,121 (371)
Image quality improvement in low‐dose chest CT with deep learning image reconstruction
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Objectives To investigate the clinical utility of deep learning image reconstruction (DLIR) for improving image quality in low‐dose chest CT in comparison with 40% adaptive statistical iterative reconstruction‐Veo (ASiR‐V40%) algorithm. Methods This retrospective study included 86 patients who underwent low‐dose CT for lung cancer screening ...
Qian Tian +7 more
wiley +1 more source
Stochastic mechanism for improving selectivity of olfactory projection neurons [PDF]
Neurophysiology (2019) 51: 152-159, 2019 A mechanism is proposed for increasing selectivity of olfactory bulb projection neurons as compared to the olfactory receptor neurons, which could operate under low odor concentration, when the lateral inhibition mechanism becomes inefficient. The mechanism proposed is based on the threshold-type reaction to stimuli a projection neuron receives from ...
arxiv +1 more source
Clinical commissioning of an adaptive radiotherapy platform: Results and recommendations
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Online adaptive radiotherapy platforms present a unique challenge for commissioning as guidance is lacking and specialized adaptive equipment, such as deformable phantoms, are rare. We designed a novel adaptive commissioning process consisting of end‐to‐end tests using standard clinical resources.
Kelly Kisling +5 more
wiley +1 more source
Frontiers in Cell and Developmental Biology, 2020 Neurons derived from human induced pluripotent stem cells (hiPSC-derived neurons) offer novel opportunities for the development of preclinical models of human neurodegenerative diseases (NDDs).
Pedro Mateos-Aparicio +2 more
doaj +1 more source
Frontiers in Neuroanatomy, 2022 Glutamate acts as the main excitatory neurotransmitter in the brain and plays a vital role in physiological and pathological neuronal functions. In mammals, glutamate can cause detrimental excitotoxic effects under anoxic conditions.
Mohammad Tufazzal Hussan +3 more
doaj +1 more source
Which Neurons Will Be the Engram - Activated Neurons and/or More Excitable Neurons? [PDF]
Experimental Neurobiology, 2016 During past decades, the formation and storage principle of memory have received much attention in the neuroscience field. Although some studies have attempted to demonstrate the nature of the engram, elucidating the memory engram allocation mechanism was not possible because of the limitations of existing methods, which cannot specifically modulate ...
Ji-il Kim +3 more
openaire +3 more sources
Neuron-to-neuron α-synuclein propagation in vivo is independent of neuronal injury [PDF]
Acta Neuropathologica Communications, 2015 Interneuronal propagation of α-synuclein has been demonstrated in a variety of experimental models and may be involved in disease progression during the course of human synucleinopathies. The aim of this study was to assess the role that neuronal injury or, vice versa, cell integrity could have in facilitating interneuronal α-synuclein transfer and ...
Ulusoy, Ayse +6 more
openaire +4 more sources
Error correction and fast detectors implemented by ultra-fast neuronal plasticity [PDF]
Phys. Rev. E 89, 042712 (2014), 2014 We experimentally show that the neuron functions as a precise time-integrator, where the accumulated changes in neuronal response latencies, under complex and random stimulation patterns, are solely a function of a global quantity, the average time-lag between stimulations.
arxiv +1 more source
Synaptophysin and synaptoporin expression in the developing rat olfactory system [PDF]
, 1993 The expressions of two closely related synaptic vesicle antigens synaptophysin and synaptoporin were examined in the olfactory system of the adult rat and during pre- and postnatal development.
Bayer +50 more
core +1 more source
Two distinct desynchronization processes caused by lesions in globally coupled neurons [PDF]
Papers in Physics 7, 070002 (2015), 2015 To accomplish a task, the brain works like a synchronized neuronal network where all the involved neurons work together. When a lesion spreads in the brain, depending on its evolution, it can reach a significant portion of relevant area. As a consequence, a phase transition might occur: the neurons desynchronize and cannot perform a certain task ...
arxiv +1 more source