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Biomarkers for HARDI: 2nd & 4th order tensor invariants

Aurobrata Ghosh, Theo Papadopoulo, Rachid Deriche
2012 2012 9th IEEE International Symposium on Biomedical Imaging (ISBI)  
We present and explain the integrity basis, basic invariants and principal invariants of 2nd & 4th order tensors to expand on a recently proposed paper on 4th order tensor invariants.  ...  In this paper, we explore the theory of tensor invariants as a mathematical framework for computing new biomarkers for HARDI.  ...  These results strongly indicate that the integrity basis for 2nd & 4th order tensors form a promising framework for developing new biomarkers for HARDI.  ... 
doi:10.1109/isbi.2012.6235475 dblp:conf/isbi/GhoshPD12 fatcat:m22auvpdvnfjroi76tquhs4c6e

Potential Biomarkers From Positive Definite 4th Order Tensors In Hardi

Sumit Kaushik, Jan Kybic, Avinash Bansal, Temesgen Bihonegn, Jan Slovak
2021 2021 IEEE 18th International Symposium on Biomedical Imaging (ISBI)  
In this paper, we provide a framework to evaluate new scalar quantities for higher order tensors (HOT) appearing in high angular resolution diffusion imaging (HARDI).  ...  Experiments performed in the 4th order case reveal that D-components encode geometric information unlike the isometric 6D 2nd order Voigt form.  ...  Acknowledgments The authors from CTU, Prague acknowledges the support by OpVVV project CZ.02.1.01/0.0/0.0/16 019/0000765 Research Center for Informatics.  ... 
doi:10.1109/isbi48211.2021.9434144 fatcat:qfg43x7yxzgunlyfe26nb5lzqy

Rotation Invariant Features for HARDI [chapter]

Evan Schwab, H. Ertan Çetingül, Bijan Afsari, Michael A. Yassa, René Vidal
2013 Lecture Notes in Computer Science  
This paper proposes a new family of rotation invariant scalar features for dMRI based on the spherical harmonic (SH) representation of high angular resolution diffusion images (HARDI).  ...  These features describe the shape of the orientation distribution function extracted from HARDI data and are applicable to any reconstruction method that represents HARDI signals in terms of an SH basis  ...  [16] on the principal invariants of the 4th order tensor.  ... 
doi:10.1007/978-3-642-38868-2_59 pmid:24684011 pmcid:PMC4194072 fatcat:ppq34e3wvvanlnaks3bmnyj2mm

On facilitating the use of HARDI in population studies by creating rotation-invariant markers

Emmanuel Caruyer, Ragini Verma
2015 Medical Image Analysis  
HARDI and can be used for HARDI-based population analysis.  ...  These measures quantify the complexity of the angular diffusion profile modeled using a higher order model, thereby giving more information than classical diffusion tensor-derived parameters.  ...  The first method (Ghosh et al., 2012a) starts from a 4th-order tensor representation of the HARDI function, and rewrites the 4th-order tensor as a 2nd-order tensor in R 6 .  ... 
doi:10.1016/j.media.2014.10.009 pmid:25465846 pmcid:PMC4752594 fatcat:kr72jfhlkvfsrnqga2agnv3hnm

From Diffusion MRI to Brain Connectomics [chapter]

Aurobrata Ghosh, Rachid Deriche
2012 Modeling in Computational Biology and Biomedicine  
Euler's method, the 2nd order Runge-Kutta method, and the adaptive 4th order 727 Runge Kutta method as numerical integration schemes.  ...  Therefore, key challenges to tackle include defining new biomarkers related to the quantities, scalar or not, that could be retrieved from High Order Tensors, HARDI, Q-Ball or the EAP to better describe  ... 
doi:10.1007/978-3-642-31208-3_6 fatcat:yie47qd3ezc4jivnqpyfo62rju

In vivo diffusion magnetic resonance imaging of the white matter microstructure from dictionaries generated by Monte Carlo simulations: development and validation

Gaëtan Rensonnet
2019
The superposition approximation for DW-MRI signals in the presence of multiple fascicles of axons, often taken for granted in state-of-the-art approaches, was thoroughly verified.  ...  Monte Carlo simulations of DW-MRI signals, or fingerprints, are pre-computed for a large collection of microstructural configurations.  ...  The protocol was mainly used for a Diffusion Tensor Imaging (DTI, Basser et al. (1994) ) fit in order to correct for slight Methods Table 4 .1: 2-D sampling of the q-space for enhanced sensitivity  ... 
doi:10.5075/epfl-thesis-8497 fatcat:36xme4kjlnbxtalqexaprlnske

Final Program Forty Second Annual Meeting International Neuropsychological Society February 12–15, 2014 Seattle, Washington, USA

2014 Journal of the International Neuropsychological Society  
Clinical trials aimed at improving neuropsychological function are increasingly important for developing the evidence base for both pharmacologic and behavioral (experience-based) interventions.  ...  We will make frequent reference to a developmental framework in which different designs may be appropriate for addressing the distinct goals of different phases of research, from initial proof-of-concept  ...  HARDY. Feasibility of Computerized Cognitive Training with Young Survivors of Childhood Cancer.  ... 
doi:10.1017/s1355617714000381 pmid:24666775 fatcat:6bwv7b2wjjez3beb3z5bryms6i

Social cognition and psychopathology in adolescents Where are we in clinical applications of stem cells in ischaemic stroke? Paul Reading Recent advances in narcolepsy Public and patient involvement (PPI) at King's: Community for Research Involvement and Support for people with Parkinson's (CRISP)

Simone Haller, Chii Fen Hiu, Kathrin Kadosh, Dheeraj Kalladka, Keith Muir, Mubasher Qamar, Alexandra Rizos, Liba Stones, Clare Meachin, Ray Chaudhuri
unpublished
Presentation: 50/100/200 units of Clostridium Botulinum Neurotoxin type A (150 kD), free from complexing proteins as a powder for solution for injection.  ...  Dosage and Administration: Due to unit differences in the potency assay, unit doses for Xeomin are not interchangeable with those for other preparations of Botulinum toxin.  ...  …modern treatments for Parkinson's only became available after research and testing on [PD] patients  ... 
fatcat:6ygcpyr7rje73jyeaqbcjcbd4u

Orals

2012 Diabetes  
The MARD for the study was 12.6%. Values for BG measurements ranged from 38 to 399 mg/dL.  ...  Data reporting percentages, a measure of reliability, were 76% for the DexCom and nearly 100% for the Navigator and Guardian.  ...  Young male CD11cMyD88+/+MyD88-/mice (n=18), control MyD88-/-mice (n=18) and wild type B6 mice (n=24) were fed with HF diet for 16 weeks.  ... 
doi:10.2337/db12-1-377 fatcat:aghmf2kiovg2znbr4fv2akelra

Measuring Temperature with Atoms and Molecules

G.-W. Truong, S. Scholten, F. Karim, J. D. Anstie, C. Perrella, P. Light, Dong Wei, E. F. May, T. M. Stace, A. N. Luiten
2018 Conference on Lasers and Electro-Optics   unpublished
The phenomena were explained by taking account of 2nd and 4th-order nonlinearities.  ...  Our technique allows for an absolute measurement of biomarker concentra- tion and proves sensitivity to a single biomarker (a colloidal quantum dot).  ... 
doi:10.1364/cleo_si.2018.stu3p.3 fatcat:2aon5ltmpfafpmsux5nywbr754