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Department of Applied Mathematics

Dr Sandra Ortega Martorell

Dr Sandra Ortega Martorell

Telephone: 0151 231 2190

Biography

Lecturer in Applied Mathematics

Degrees

2012, Autonomous University of Barcelona, Spain, PhD, Computer Science

Publications

Highlighted publications

Ortega-Martorell S, Julia-Sapé M, Lisboa P, Arús C. 2016. Pattern recognition analysis of MR spectra 5 :945-958 >DOI

Delgado-Goni T, Ortega-Martorell S, Ciezka M, Olier I, Candiota AP, Julia-Sape M, Fernandez F, Pumarola M, Lisboa PJ, Arus C. 2016. MRSI-based molecular imaging of therapy response to temozolomide in preclinical glioblastoma using source analysis NMR IN BIOMEDICINE, 29 :732-743 >DOI >Link

Ortega-Martorell S, Julia-Sape M, Olier I, Lisboa P, Delgado-Goni T, Arus C, Ciezka M. 2014. Semi-supervised source extraction methodology for the nosological imaging of glioblastoma response to therapy 2014 IEEE SYMPOSIUM ON COMPUTATIONAL INTELLIGENCE AND DATA MINING (CIDM), IEEE Symposium on Computational Intelligence and Data Mining (CIDM) :93-98 >Link

Ortega-Martorell S, Arus C, Olier I, Lisboa P, Julia-Sape M. 2014. Automatic relevance source determination in human brain tumors using Bayesian NMF 2014 IEEE SYMPOSIUM ON COMPUTATIONAL INTELLIGENCE AND DATA MINING (CIDM), IEEE Symposium on Computational Intelligence and Data Mining (CIDM) :99-104 >Link

Ortega Martorell S, Ruiz H, Vellido A, Olier I, Romero E, Julià-Sapé M, Martín JD, Jarman IH, Arús C, Lisboa PJG. 2013. A novel semi-supervised methodology for extracting tumor type-specific MRS sources in human brain data PLoS ONE,

Ortega-Martorell S, Lisboa PJG, Vellido A, Simões RV, Pumarola M, Julià-Sapé M, Arús C. 2012. Convex non-negative matrix factorization for brain tumor delimitation from MRSI data. PLoS One, 7 :e47824 >DOI >Link

Ortega-Martorell S, Lisboa PJG, Vellido A, Julià-Sapé M, Arús C. 2012. Non-negative matrix factorisation methods for the spectral decomposition of MRS data from human brain tumours. BMC Bioinformatics, 13 :38 >DOI >Link

Ortega-Martorell S, Lisboa PJG, Vellido A, Simões RV, Julià-Sapé M, Arús C. 2011. Brain tumor pathological area delimitation through Non-negative Matrix Factorization Proceedings - IEEE International Conference on Data Mining, ICDM, :1058-1063 >DOI

Ortega-Martorell S, Vellido A, Lisboa PJG, Julià-Sapé M, Arús C. 2011. Spectral decomposition methods for the analysis of MRS information from human brain tumors Proceedings of the International Joint Conference on Neural Networks, :3279-3284 >DOI

Ortega-Martorell S, Olier I, Vellido A, Julià-Sapé M, Arús C. 2010. Spectral Prototype Extraction for dimensionality reduction in brain tumour diagnosis Proceedings of the 18th European Symposium on Artificial Neural Networks - Computational Intelligence and Machine Learning, ESANN 2010, :445-450

Ortega-Martorell S, Olier I, Julià-Sapé M, Arús C. 2010. SpectraClassifier 1.0: a user friendly, automated MRS-based classifier-development system BMC Bioinformatics, 11 :106 >DOI

Journal Articles

Jiménez-Xarrié E, Davila M, Candiota AP, Delgado-Mederos R, Ortega-Martorell S, Julià-Sapé M, Arús C, Martí-Fàbregas J. 2017. Brain metabolic pattern analysis using a magnetic resonance spectra classification software in experimental stroke BMC Neuroscience, 18 >DOI

Delgado-Goni T, Ortega-Martorell S, Ciezka M, Olier I, Candiota AP, Julia-Sape M, Fernandez F, Pumarola M, Lisboa PJ, Arus C. 2016. MRSI-based molecular imaging of therapy response to temozolomide in preclinical glioblastoma using source analysis NMR IN BIOMEDICINE, 29 :732-743 >DOI >Link

Mocioiu V, Ortega-Martorell S, Olier I, Jablonski M, Starcukova J, Lisboa P, Arus C, Julia-Sape M. 2015. From raw data to data-analysis for magnetic resonance spectroscopy - the missing link: jMRUI2XML BMC BIOINFORMATICS, 16 >DOI >Link

Ortega Martorell S, Ruiz H, Vellido A, Olier I, Romero E, Julià-Sapé M, Martín JD, Jarman IH, Arús C, Lisboa PJG. 2013. A novel semi-supervised methodology for extracting tumor type-specific MRS sources in human brain data PLoS ONE,

Simões RV, Ortega-Martorell S, Delgado-Goñi T, Le Fur Y, Pumarola M, Candiota AP, Martín J, Stoyanova R, Cozzone PJ, Julià-Sapé M, Arús C. 2013. Improving the classification of brain tumors in mice with Perturbation Enhanced (PE)-MRSI Integrative Biology, 4 :183-191 >DOI

Vilamala A, Vellido A, Lisboa PJG, Ortega-Martorell S. 2013. Discriminant Convex Non-negative Matrix Factorization for the classification of human brain tumours Pattern Recognition Letters, >DOI

Ortega-Martorell S, Lisboa PJG, Vellido A, Simões RV, Pumarola M, Julià-Sapé M, Arús C. 2012. Convex non-negative matrix factorization for brain tumor delimitation from MRSI data. PLoS One, 7 :e47824 >DOI >Link

Ortega-Martorell S, Lisboa PJG, Vellido A, Julià-Sapé M, Arús C. 2012. Non-negative matrix factorisation methods for the spectral decomposition of MRS data from human brain tumours. BMC Bioinformatics, 13 :38 >DOI >Link

Ortega-Martorell S, Olier I, Julià-Sapé M, Arús C. 2010. SpectraClassifier 1.0: a user friendly, automated MRS-based classifier-development system BMC Bioinformatics, 11 :106 >DOI

Conference Publication (journal proceedings)

Mocioiu V, De Barros NMP, Ortega-Martorell S, Slotboom J, Knecht U, Arús C, Vellido A, Julià-Sapé M. 2016. A machine learning pipeline for supporting differentiation of glioblastomas from single brain metastases ESANN 2016 - 24th European Symposium on Artificial Neural Networks, :247-252

Ortega-Martorell S, Julia-Sape M, Olier I, Lisboa P, Delgado-Goni T, Arus C, Ciezka M. 2014. Semi-supervised source extraction methodology for the nosological imaging of glioblastoma response to therapy 2014 IEEE SYMPOSIUM ON COMPUTATIONAL INTELLIGENCE AND DATA MINING (CIDM), IEEE Symposium on Computational Intelligence and Data Mining (CIDM) :93-98 >Link

Ortega-Martorell S, Arus C, Olier I, Lisboa P, Julia-Sape M. 2014. Automatic relevance source determination in human brain tumors using Bayesian NMF 2014 IEEE SYMPOSIUM ON COMPUTATIONAL INTELLIGENCE AND DATA MINING (CIDM), IEEE Symposium on Computational Intelligence and Data Mining (CIDM) :99-104 >Link

Lisboa PJG, Jarman IH, Etchells TA, Chambers SJ, Bacciu D, Whittaker J, Garibaldi JM, Ortega-Martorell S, Vellido A, Ellis IO. 2012. Discovering hidden pathways in bioinformatics Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 7548 LNBI :49-60 >DOI

Ruiz H, Ortega-Martorell S, Jarman IH, Martín JD, Lisboa P. 2012. Constructing similarity networks using the Fisher information metric

Ruiz H, Ortega-Martorell S, Jarman IH, Vellido A, Martin JD, Romero E, Lisboa PJG. 2012. Towards interpretable classifiers with blind signal separation Proceedings of the International Joint Conference on Neural Networks, >DOI

Ortega-Martorell S, Lisboa PJG, Vellido A, Simões RV, Julià-Sapé M, Arús C. 2011. Brain tumor pathological area delimitation through Non-negative Matrix Factorization Proceedings - IEEE International Conference on Data Mining, ICDM, :1058-1063 >DOI

Ortega-Martorell S, Vellido A, Lisboa PJG, Julià-Sapé M, Arús C. 2011. Spectral decomposition methods for the analysis of MRS information from human brain tumors Proceedings of the International Joint Conference on Neural Networks, :3279-3284 >DOI

Ortega-Martorell S, Olier I, Vellido A, Julià-Sapé M, Arús C. 2010. Spectral Prototype Extraction for dimensionality reduction in brain tumour diagnosis Proceedings of the 18th European Symposium on Artificial Neural Networks - Computational Intelligence and Machine Learning, ESANN 2010, :445-450

Panagiotidi S, Vázquez-Salceda J, Álvarez-Napagao S, Ortega-Martorell S, Willmott S, Confalonieri R, Storms P. 2008. Intelligent contracting agents language AISB 2008 Convention: Communication, Interaction and Social Intelligence - Proceedings of the AISB 2008 Symposium on Behaviour Regulation in Multi-Agent Systems, :49-54

Chapters

Ortega-Martorell S, Julia-Sapé M, Lisboa P, Arús C. 2016. Pattern recognition analysis of MR spectra 5 :945-958 >DOI

Other

Ortega Martorell S, Delgado-Goñi T, Olier I, Ciezka M, Candiota AP, Julià-Sapé M, Pumarola M, Lisboa P, Arús C. 2015. Tracking therapy response in pre-clinical glioblastoma using source-based nosologic images European Society for Magnetic Resonance in Medicine and Biology (ESMRMB) 2015,

Mocioiu V, Pedrosa de Barros NM, Ortega Martorell S, Knecht U, Slotboom J, Arús C, Julià-Sapé M. 2015. Differentiating Glioblastomas from brain Metastases by means of Convex nonnegative Matrix Factorization European Society for Magnetic Resonance in Medicine and Biology (ESMRMB) 2015,

Pedrosa de Barros NM, Mocioiu V, Ortega Martorell S, Knecht U, Arús C, Slotboom J, Julià-Sapé M. 2015. Highlighting differences between GBM and brain metastasis using a blind source separation method applied to MRSI data European Society for Magnetic Resonance in Medicine and Biology (ESMRMB) 2015,

Mocioiu V, Ortega Martorell S, Olier I, Jablonski M, Starcukova J, Lisboa P, Arús C, Julià-Sapé M. 2015. jMRUI plugin software (jMRUI2XML) to allow automated MRS processing and XMLbased standardized output European Society for Magnetic Resonance in Medicine and Biology (ESMRMB) 2015,

Ortega Martorell S, Olier I, Delgado-Goñi T, Ciezka M, Candiota AP, Julià-Sapé M, Pumarola M, Lisboa P, Arús C. 2015. Source-based nosologic imaging of response to therapy in pre-clinical glioblastoma International Society for Magnetic Resonance in Medicine (ISMRM) 2015,

Ciezka M, Delgado-Goñi T, Ortega-Martorell S, Olier I, Julià-Sapé M, Candiota AP, Lisboa P. 2014. Nosological imaging of glioblastoma response to therapy XIV Congress of the Spanish Biophysical Society 2014,

Ortega Martorell S, Lisboa PJG, Vellido A, Simões RV, Pumarola M, Julià-Sapé M, Arús C. 2012. Tumour area delimitation in glioblastoma multiforme using non-negative matrix factorisation IMA Conference on Mathematics of Medical Devices and Surgical Procedures,

Ortega Martorell S, Lisboa P, Vellido A, Simões RV, Pumarola M, Julià-Sapé M, Arús C. 2012. Delimitation of the solid tumour area in glioblastomas using Non-negative Matrix Factorisation 10th IEEE International Symposium on Biomedical Imaging (ISBI),

Ortega Martorell S, Julià-Sapé M, García-Chacón A, Arús C. 2012. An integrated framework to produce classifiers for MRS data and to visualise them into a decision-support system European Society for Magnetic Resonance in Medicine and Biology (ESMRMB),

Ortega Martorell S, Lisboa PJG, Vellido A, Simões RV, Pumarola M, Julià-Sapé M, Arús C. 2012. Unsupervised tumour area delimitation in glioblastoma multiforme using non-negative matrix factorisation of MRSI grids European Society for Magnetic Resonance in Medicine and Biology (ESMRMB),

Ortega Martorell S, Olier I, Vellido A, Lisboa PJG, El-Deredy W. 2011. Comparing independent component analysis and non-negative matrix factorisation in the identification of event-related brain dynamics 11th International Conference on Cognitive Neuroscience (ICON XI),

Simões RV, Ortega Martorell S, Acosta M, Pumarola M, Candiota AP, Julià-Sapé M, Arús C. 2010. Improving tumor classification with MRSI pattern perturbation Cambridge Research Institute Annual International Symposium,

Ortega Martorell S, Olier I, Vellido A, Julià-Sapé M, Arús C. 2010. Spectral Prototype Extraction for the discrimination of glioblastomas from metastases in a SV 1H-MRS brain tumour database International Society for Magnetic Resonance in Medicine (ISMRM),

Simões RV, Ortega Martorell S, Delgado-Goñi T, le Fur Y, Pumarola M, Candiota AP, Cozzone PJ, Juliá-Sapè M, Arús C. 2010. Improving the classification of brain tumors in mice with perturbation enhanced (PE)-MRSI 16th International Charles Heidelberger Symposium on Cancer Research,

Ortega Martorell S, Olier I, Julià-Sapé M, Arús C. 2009. TumourClassifier, a java tool for fast development and implementation of MRS- based classifiers International Society for Magnetic Resonance in Medicine (ISMRM),

Ortega Martorell S, Olier I, Julià-Sapé M, Arús C. 2009. TumourClassifier 1.0, a java solution for a fast development of MRS-based classifiers European Society for Magnetic Resonance in Medicine and Biology (ESMRMB),

Julià-Sapé M, Majós C, Ortega-Martorell S, Olier I, Cos M, Aguilera C, Arús C. 2009. Choosing optimal classifiers for 1.5T SV 1H-MRS data for pseudotumoural brain diseases European Society for Magnetic Resonance in Medicine and Biology (ESMRMB),

Engagement & Impact

Fellowships:

Fellowship title: Marie Curie Intra-European Fellowships for Career Development (IEF). Call identifier FP7-PEOPLE-2012-IEF, Organisation: European Commission. Liverpool John Moores University

Teaching qualification:

Title of qualification gained: CIEH Level 3 Award in Education and Training