Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Kâmil Uluda"'
Publikováno v:
Frontiers in Physiology, Vol 14 (2024)
Cerebral blood flow (CBF) is a critical physiological parameter of brain health, and it can be non-invasively measured with arterial spin labeling (ASL) MRI. In this study, we evaluated and optimized whole-brain, high-resolution ASL as an alternative
Externí odkaz:
https://doaj.org/article/f6975f403a4f40aa82774afda7dcec91
Autor:
Kâmil Uludağ
Publikováno v:
NeuroImage, Vol 277, Iss , Pp 120249- (2023)
In this primer, I provide an overview of the physiological processes that contribute to the observed BOLD signal (i.e., the generative biophysical model), including their time course properties within the framework of the physiologically-informed dyn
Externí odkaz:
https://doaj.org/article/f8f088d634604a52881f488e34c388d1
Autor:
Sayan Nag, Kamil Uludag
Publikováno v:
Frontiers in Human Neuroscience, Vol 17 (2023)
Functional MRI (fMRI) is an indirect reflection of neuronal activity. Using generative biophysical model of fMRI data such as Dynamic Causal Model (DCM), the underlying neuronal activities of different brain areas and their causal interactions (i.e.,
Externí odkaz:
https://doaj.org/article/d0218f372e7d4a188212deba1ea7a38a
Autor:
Jacob Benjamin Schulman, Ece Su Sayin, Angelica Manalac, Julien Poublanc, Olivia Sobczyk, James Duffin, Joseph A. Fisher, David Mikulis, Kâmil Uludağ
Publikováno v:
Frontiers in Neuroimaging, Vol 2 (2023)
IntroductionDynamic susceptibility contrast (DSC) MRI allows clinicians to determine perfusion parameters in the brain, such as cerebral blood flow, cerebral blood volume, and mean transit time. To enable quantification, susceptibility changes can be
Externí odkaz:
https://doaj.org/article/ce71c70ddd594426a2ccf68897f08e29
Publikováno v:
NeuroImage, Vol 264, Iss , Pp 119675- (2022)
The most widely used gradient-echo (GE) blood oxygenation level-dependent (BOLD) contrast has high sensitivity, but low specificity due to draining vein contributions, while spin-echo (SE) BOLD approach at ultra-high magnetic fields is highly specifi
Externí odkaz:
https://doaj.org/article/24fbdd998e9443729437a7ffd1c8f759
Autor:
Emrah Düzel, Julio Acosta‐Cabronero, David Berron, Geert Jan Biessels, Isabella Björkman‐Burtscher, Michel Bottlaender, Richard Bowtell, Mark v Buchem, Arturo Cardenas‐Blanco, Fawzi Boumezbeur, Dennis Chan, Stuart Clare, Mauro Costagli, Ludovic deRochefort, Ariane Fillmer, Penny Gowland, Oskar Hansson, Jeroen Hendrikse, Oliver Kraff, Mark E. Ladd, Itamar Ronen, Esben Petersen, James B. Rowe, Hartwig Siebner, Tony Stoecker, Sina Straub, Michela Tosetti, Kamil Uludag, Alexandre Vignaud, Jaco Zwanenburg, Oliver Speck
Publikováno v:
Alzheimer’s & Dementia: Diagnosis, Assessment & Disease Monitoring, Vol 11, Iss 1, Pp 538-549 (2019)
Abstract Introduction The goal of European Ultrahigh‐Field Imaging Network in Neurodegenerative Diseases (EUFIND) is to identify opportunities and challenges of 7 Tesla (7T) MRI for clinical and research applications in neurodegeneration. EUFIND co
Externí odkaz:
https://doaj.org/article/25c6b44ea5a441e7af8da50154653a2c
Publikováno v:
NeuroImage, Vol 241, Iss , Pp 118435- (2021)
Mapping mesoscopic cortical functional units such as columns or laminae is increasingly pursued by ultra-high field (UHF) functional magnetic resonance imaging (fMRI). The most popular approach for high-resolution fMRI is currently gradient-echo (GE)
Externí odkaz:
https://doaj.org/article/fba499ff7a984e30911ac1c22b46021a
Publikováno v:
NeuroImage, Vol 224, Iss , Pp 117373- (2021)
Most neuroanatomical studies are based on T1-weighted MR images, whose intensity profiles are not solely determined by the tissue's longitudinal relaxation times (T1), but also affected by varying non-T1 contributions, hampering data reproducibility.
Externí odkaz:
https://doaj.org/article/d783247edecb40bbaf99d8a2457bdfe4
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:
Bálint Várkuti, Mustafa Cavusoglu, Alexander Kullik, Björn Schiffler, Ralf Veit, Özge Yilmaz, Wolfgang Rosenstiel, Christoph Braun, Kamil Uludag, Niels Birbaumer, Ranganatha Sitaram
Publikováno v:
PLoS ONE, Vol 6, Iss 4, p e14801 (2011)
BackgroundIn the graph theoretical analysis of anatomical brain connectivity, the white matter connections between regions of the brain are identified and serve as basis for the assessment of regional connectivity profiles, for example, to locate the
Externí odkaz:
https://doaj.org/article/27fbe221c6c646ceb44956c98159de59