Zobrazeno 1 - 10
of 138
pro vyhledávání: '"Benedikt A, Poser"'
Autor:
Abraham B. Beckers, Gerhard S. Drenthen, Jacobus F.A. Jansen, Walter H. Backes, Benedikt A. Poser, Daniel Keszthelyi
Publikováno v:
NeuroImage, Vol 280, Iss , Pp 120361- (2023)
In functional magnetic resonance imaging (fMRI) of the brain the measured signal is corrupted by several (e.g. physiological, motion, and thermal) noise sources and depends on the image acquisition. Imaging at ultrahigh field strength is becoming inc
Externí odkaz:
https://doaj.org/article/02a5596d65654feb8b6cef186dcf9d82
Publikováno v:
Zeitschrift für Medizinische Physik, Vol 32, Iss 3, Pp 334-345 (2022)
Spoke trajectory parallel transmit (pTX) excitation in ultra-high field MRI enables B1+ inhomogeneities arising from the shortened RF wavelength in biological tissue to be mitigated. To this end, current RF excitation pulse design algorithms either e
Externí odkaz:
https://doaj.org/article/0179dd8aed044ba48bdab875e7323c56
Autor:
Omer Faruk Gulban, Saskia Bollmann, Laurentius (Renzo) Huber, Konrad Wagstyl, Rainer Goebel, Benedikt A. Poser, Kendrick Kay, Dimo Ivanov
Publikováno v:
NeuroImage, Vol 264, Iss , Pp 119733- (2022)
Mesoscopic (0.1-0.5 mm) interrogation of the living human brain is critical for advancing neuroscience and bridging the resolution gap with animal models. Despite the variety of MRI contrasts measured in recent years at the mesoscopic scale, in vivo
Externí odkaz:
https://doaj.org/article/0a897b443ef64c0799c4fc7bd9a3ce35
Publikováno v:
NeuroImage, Vol 263, Iss , Pp 119579- (2022)
Survival in biological environments requires learning associations between predictive sensory cues and threatening outcomes. Such aversive learning may be implemented through reinforcement learning algorithms that are driven by the signed difference
Externí odkaz:
https://doaj.org/article/42423fb1900a42b4b6de63069203322e
Autor:
Denizhan Kurban, Dimo Ivanov, Sriranga Kashyap, Laurentius Huber, Gilad Liberman, Benedikt A. Poser
Publikováno v:
NeuroImage, Vol 247, Iss , Pp 118820- (2022)
Measurement of cerebral blood flow (CBF) using the Arterial Spin Labeling (ASL) technique is a desirable fMRI approach due to the higher specificity of CBF to the site of neural activation. However, ASL has inherent limitations, such as a low signal-
Externí odkaz:
https://doaj.org/article/e2965e1e6aa24a6da9d4f99d0b6dfed2
Autor:
Yuhui Chai, Linqing Li, Yicun Wang, Laurentius Huber, Benedikt A. Poser, Jeff Duyn, Peter A. Bandettini
Publikováno v:
NeuroImage, Vol 242, Iss , Pp 118455- (2021)
The increased availability of ultra-high field scanners provides an opportunity to perform fMRI at sub-millimeter spatial scales and enables in vivo probing of laminar function in the human brain. In most previous studies, the definition of cortical
Externí odkaz:
https://doaj.org/article/9d8e41b68dea411d8fc5779fcaac8e77
Autor:
Laurentius (Renzo) Huber, Benedikt A. Poser, Peter A. Bandettini, Kabir Arora, Konrad Wagstyl, Shinho Cho, Jozien Goense, Nils Nothnagel, Andrew Tyler Morgan, Job van den Hurk, Anna K Müller, Richard C. Reynolds, Daniel R. Glen, Rainer Goebel, Omer Faruk Gulban
Publikováno v:
NeuroImage, Vol 237, Iss , Pp 118091- (2021)
High-resolution fMRI in the sub-millimeter regime allows researchers to resolve brain activity across cortical layers and columns non-invasively. While these high-resolution data make it possible to address novel questions of directional information
Externí odkaz:
https://doaj.org/article/af11e955ff2346acb47332512ef5d0ec
Autor:
Laurentius (Renzo) Huber, Benedikt A Poser, Amanda L Kaas, Elizabeth J Fear, Sebastian Dresbach, Jason Berwick, Rainer Goebel, Robert Turner, Aneurin J Kennerley
Publikováno v:
NeuroImage, Vol 237, Iss , Pp 118195- (2021)
Cerebral blood volume (CBV) has been shown to be a robust and important physiological parameter for quantitative interpretation of functional (f)MRI, capable of delivering highly localized mapping of neural activity. Indeed, with recent advances in u
Externí odkaz:
https://doaj.org/article/9829b601f0ed45549f07918404d4aac3
Autor:
Sriranga Kashyap, Dimo Ivanov, Martin Havlicek, Laurentius Huber, Benedikt A Poser, Kâmil Uludağ
Publikováno v:
PLoS ONE, Vol 16, Iss 4, p e0250504 (2021)
Laminar fMRI at ultra-high magnetic field strength is typically carried out using the Blood Oxygenation Level-Dependent (BOLD) contrast. Despite its unrivalled sensitivity to detecting activation, the BOLD contrast is limited in its spatial specifici
Externí odkaz:
https://doaj.org/article/daf99e0838834322aedde7332ea9068b
Autor:
Redouane Jamil, Franck Mauconduit, Caroline Le Ster, Philipp Ehses, Benedikt A. Poser, Alexandre Vignaud, Nicolas Boulant
Publikováno v:
PLoS ONE, Vol 16, Iss 11 (2021)
For functional MRI with a multi-channel receiver RF coil, images are often reconstructed channel by channel, resulting into multiple images per time frame. The final image to analyze usually is the result of the covariance Sum-of-Squares (covSoS) com
Externí odkaz:
https://doaj.org/article/074786cd99304cc6b85ac87b5325891a