Tommy Löfstedt

Forskningsingenjör, förste vid Institutionen för strålningsvetenskaper Enhet: Radiofysik

tommy.lofstedt@umu.se

27, Norrlands universitetssjukhus Umeå universitet, 901 87 Umeå

Senaste publikationer

2019

A constrained singular value decomposition method that integrates sparsity and orthogonality

PLoS ONE, Vol. 14, (3)

Guillemot, Vincent; Beaton, Derek; Gloaguen, Arnaud; et al.

2019

Gray-level invariant Haralick texture features

PLoS ONE, Public Library of Science 2019, Vol. 14, (2)

Löfstedt, Tommy; Brynolfsson, Patrik; Nyholm, Tufve; et al.

2018

Continuation of Nesterov's Smoothing for Regression With Structured Sparsity in High-Dimensional Neuroimaging

IEEE Transactions on Medical Imaging, IEEE 2018, Vol. 37, (11) : 2403-2413

Hadj-Selem, Fouad; Löfstedt, Tommy; Dohmatob, Elvis; et al.

2018

Density Estimation of Grey-Level Co-Occurrence Matrices for Image Texture Analysis

Physics in Medicine and Biology, Institute of Physics and Engineering in Medicine 2018, Vol. 63, (19) : 9-15

Garpebring, Anders; Brynolfsson, Patrik; Kuess, Peter; et al.

2018

Gray-level invariant Haralick texture features

Radiotherapy and Oncology, Elsevier 2018, Vol. 127 : S279-S280

Brynolfsson, Patrik; Löfstedt, Tommy; Asklund, Thomas; et al.

2018

Identifying a neuroanatomical signature of schizophrenia, reproducible across sites and stages, using machine-learning with structured sparsity

Acta Psychiatrica Scandinavica, John Wiley & Sons 2018, Vol. 138 : 571-580

de Pierrefeu, Amicie; Löfstedt, Tommy; Laidi, C.; et al.

2018

Parameter estimation using weighted total least squares in the two-compartment exchange model

Magnetic Resonance in Medicine, John Wiley & Sons 2018, Vol. 79, (1) : 561-567

Garpebring, Anders; Tommy, Löfstedt

2018

Prediction of activation patterns preceding hallucinations in patients with schizophrenia using machine learning with structured sparsity

Human Brain Mapping, Vol. 39, (4) : 1777-1788

de Pierrefeu, Amicie; Fovet, Thomas; Hadj-Selem, Fouad; et al.

2018

Simulated Data for Linear Regression with Structured and Sparse Penalties: Introducing pylearn-simulate

Journal of Statistical Software, Foundation for Open Access Statistics 2018, Vol. 87, (3)

Löfstedt, Tommy; Guillemot, Vincent; Frouin, Vincent; et al.

2018

Structured Sparse Principal Components Analysis With the TV-Elastic Net Penalty

IEEE Transactions on Medical Imaging, IEEE 2018, Vol. 37, (2) : 396-407

de Pierrefeu, Amicie; Löfstedt, Tommy; Hadj-Selem, Fouad; et al.

2018

Using deep learning to generate synthetic CTs for radiotherapy treatment planning

Radiotherapy and Oncology, Elsevier 2018, Vol. 127 : S283-S283

Bylund, Mikael; Jonsson, Joakim; Lundman, Josef; et al.

2016

Structured Variable Selection for Regularized Generalized Canonical Correlation Analysis

MULTIPLE FACETS OF PARTIAL LEAST SQUARES AND RELATED METHODS, SPRINGER INT PUBLISHING AG 2016 : 129-139

Löfstedt, Tommy; Hadj-Selem, Fouad; Guillemot, Vincent; et al.

2015

Preliminary evaluation of dorsal muscle activity during resisted cervical extension in patients with longstanding pain and disability following anterior cervical decompression and fusion surgery

Physiotherapy, Vol. 101, (1) : 69-74

Peolsson, A.; Peolsson, Michael; Jull, G.; et al.

2014

Predictive support recovery with TV-Elastic Net penalty and logistic regression: An application to structural MRI

IEEE conference proceedings 2014

Dubois, Mathieu; Hadj-Selem, Fouad; Löfstedt, Tommy; et al.

2013

Global, local and unique decompositions in OnPLS for multiblock data analysis

Analytica Chimica Acta, Vol. 791 : 13-24

Löfstedt, Tommy; Hoffman, Daniel; Trygg, Johan

2013

Multiblock and Path Modeling with OnPLS

New Perspectives in Partial Least Squares and Related Methods (Part IV), Springer Science+Business Media B.V. 2013 : 209-220

Löfstedt, Tommy; Hanafi, Mohamed; Trygg, Johan

2013

OnPLS integration of transcriptomic, proteomic and metabolomic data shows multi-level oxidative stress responses in the cambium of transgenic hipI- superoxide dismutase Populus plants

BMC Genomics, BioMed Central 2013, Vol. 14

Srivastava, Vaibhav; Obudulu, Ogonna; Bygdell, Joakim; et al.

2012

Bi-modal OnPLS

Journal of Chemometrics, John Wiley & Sons 2012, Vol. 26, (6) : 236-245

Löfstedt, Tommy; Eriksson, Lennart; Gunilla Wormbs, Gunilla; et al.

2012

Dynamic ultrasound imaging: a multivariate approach for the analysis and comparison of time-dependent musculoskeletal movements

BMC Medical Imaging, Vol. 12, (1) : 29-

Löfstedt, Tommy; Ahnlund, Olof; Peolsson, Michael; et al.

2012

OnPLS: Orthogonal projections to latent structures in multiblock and path model data analysis

Umeå: Umeå universitet 2012

Löfstedt, Tommy

2012

OnPLS path modelling

Chemometrics and Intelligent Laboratory Systems, Elsevier 2012, Vol. 118 : 139-149

Löfstedt, Tommy; Hanafi, Mohamed; Mazerolles, Gérard; et al.

2012

Ultrasound imaging with speckle tracking of cervical muscle deformation and deformation rate: isometric contraction of patients after anterior cervical decompression and fusion for cervical disc disease and controls

Manual Therapy, Vol. 17, (6) : 519-525

Peolsson, Anneli; Löfstedt, Tommy; Trygg, Johan; et al.

2011

OnPLS—a novel multiblock method for the modelling of predictive and orthogonal variation

Journal of Chemometrics, John Wiley & Sons 2011, Vol. 25, (8) : 441-455

Löfstedt, Tommy; Trygg, Johan

2010

Modelling human musculoskeletal functional movements using ultrasound imaging

BMC Medical Imaging, Vol. 10, (9)

Peolsson, Michael; Löfstedt, Tommy; Vogt, Susanna; et al.

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Tommy Löfstedt

Senaste publikationer