Exploració per tema "Brain"

Ara es mostren els items 1-20 de 47

    • A MAP approach for convex non-negative matrix factorization in the diagnosis of brain tumors 

      Vilamala Muñoz, Albert; Belanche Muñoz, Luis Antonio; Vellido Alcacena, Alfredo (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Convex non-negative matrix factorization is a blind signal separation technique that has previously demonstrated to be well-suited for the task of human brain tumor diagnosis from magnetic resonance spectroscopy data. This ...

    • A Statistical Atlas of Anatomical Structures from Brain ToF MRA Datasets 

      Faura Pinent, Judit (Universitat Politècnica de Catalunya, 2020-10-31)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Instituto Politecnico do Porto
      L’angiografia per ressonància magnètica (MRA) és capaç de capturar variacions en les artèries cerebrals, ja siguin morfològiques, geomètriques o de densitat, amb alta resolució. Aquestes variacions s'utilitzen per a ...

    • A study of brain connectivity in ADHD patients 

      Izquierdo Antó, Gerard (Universitat Politècnica de Catalunya, 2020-10-31)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      Realitzat a/amb:   Politecnico di Torino
      El Trastorn per dèficit d’atenció i hiperactivitat (TDAH), tal com el seu nom indica, és un trastorn vinculat tant a la hiperactivitat com a la dificultat d’atenció que afecta principalment a infants, però també a adults, ...

    • About assessing the learning of students with dyscalculia 

      García Planas, María Isabel; García-Camba Vives, María Victoria (2019)
      Text en actes de congrés
      Accés obert
      Dyscalculia is a neurodevelopmental disorder that affects to the capacity for calculation, interfering with the academic performance, the level of social inclusion, the access to the working world, and especially in the ...

    • Aplicación para la caracterización morfométrica cerebral de ecografías de recién nacidos prematuros 

      Regalado Bernabé, Maria (Universitat Politècnica de Catalunya, 2022-07-07)
      Treball Final de Grau
      Accés obert
      Durant la segona etapa de la gestació al cervell en desenvolupament, tenen lloc complexos processos. En aquesta etapa es comencen a formar els solcs i les circumvolucions de la superfície cerebral. En nounats nascuts abans ...

    • Application of a Mamdani-type fuzzy rule-based system to segment periventricular cerebral veins in susceptibility-weighted images 

      Aymerich Martínez, Francisco Javier; Sobrevilla Frisón, Pilar; Montseny Masip, Eduard; Rovira, Alex (Springer, 2016)
      Text en actes de congrés
      Accés obert
      This paper presents an algorithm designed to segment veins in the periventricular region of the brain in susceptibility-weighted magnetic resonance images. The proposed algorithm is based on a Mamdani-type fuzzy rule-based ...

    • Assessment of 2D conventional and synthetic MRI in multiple sclerosis 

      Aymerich Martínez, Francisco Javier; Auger, Cristina; Alonso, Juli; Barros, Andrea; Clarke, Margareta; Mora, Juan; Arrambide, Georgina; Corral, Juan Francisco; Andrino, Ana; Sastre Garriga, Jaume; Rovira, Alex (Springer Nature, 2022-01-01)
      Article
      Accés obert
      Purpose: To qualitatively and quantitatively compare synthetic and conventional MRI sequences acquired on a 1.5-T system for patients with multiple sclerosis (MS). Methods: Prospective study that involved twenty-seven ...

    • Automatic BSS-based filtering of metallic interference in MEG recordings: definition and validation using simulated signals 

      Migliorelli Falcone, Carolina Mercedes; Alonso López, Joan Francesc; Romero Lafuente, Sergio; Mañanas Villanueva, Miguel Ángel; Nowak, Rafal; Russi Tintoré, Antonio (2015-05-27)
      Article
      Accés obert
      Objective. One of the principal drawbacks of magnetoencephalography (MEG) is its high sensitivity to metallic artifacts, which come from implanted intracranial electrodes and dental ferromagnetic prosthesis and produce a ...

    • Benchmark on automatic 6-month-old infant brain segmentation algorithms: the iSeg-2017 challenge 

      Wang, Li; Nie, Dong; Li, Guannan; Casamitjana Díaz, Adrià; Vilaplana Besler, Verónica (2019-02-27)
      Article
      Accés obert
      Accurate segmentation of infant brain magnetic resonance (MR) images into white matter (WM), gray matter (GM), and cerebrospinal fluid (CSF) is an indispensable foundation for early studying of brain growth patterns and ...

    • Biological tissue characterization by magnetic induction spectroscopy (MIS): requirements and limitations 

      Scharfetter, Hermann; Casañas Bueno, Roberto; Rosell Ferrer, Francisco Javier (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2003-07-31)
      Article
      Accés obert
      Magnetic induction spectroscopy (MIS) aims at the contactless measurement of the passive electrical properties (PEP) σ, ε, and μ of biological tissues via magnetic fields at multiple frequencies. Whereas previous publications ...

    • Characteristic brain volumetric changes in the AD preclinical signature 

      Petrone, Paula; Casamitjana Díaz, Adrià; Falcón, Carlos; Artigues, Miquel; Operto, Grégory; Skouras, Stavros; Cacciaglia, Raffaele; Molinuevo, Jose Luis; Vilaplana Besler, Verónica; Gispert, Juan Domingo; Salvado, Gemma (Elsevier, 2018)
      Article
      Accés obert

    • Characterization and phantom validation of a device for the bio-photonic imaging of the infant brain 

      Montesinos Jori, Alexia (Universitat Politècnica de Catalunya, 2023-01-23)
      Treball Final de Grau
      Accés restringit per acord de confidencialitat
      Realitzat a/amb:   Institut de Ciències Fotòniques (ICFO)

    • Characterization of brain development in preterm children using ultrasound images 

      Rabanaque Rodríguez, David (Universitat Politècnica de Catalunya, 2021-10-27)
      Projecte Final de Màster Oficial
      Accés obert
      El període més important per al desenvolupament del cervell humà és la fase fetal. Durant aquest període de quaranta setmanes, es produeixen canvis morfològics importants al cervell humà, incloent un enorme augment de la ...

    • Chronological brain lesions after SARS-CoV-2 infection in hACE2-transgenic mice 

      Vidal, Enric; López Figueroa, Carlos; Rodon, Jordi; Pérez, Mónica; Brustolin, Marco; Guallar, Victor (SAGE Publications, 2021-12)
      Article
      Accés obert
      Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes respiratory disease, but it can also affect other organs including the central nervous system. Several animal models have been developed to address different ...

    • Classification, dimensionality reduction, and maximally discriminatory visualization of a multicentre 1H-MRS database of brain tumors 

      Lisboa, Paulo J.G.; Romero Merino, Enrique; Vellido Alcacena, Alfredo; Julià Sapé, Margarida; Arús, Carles (IEEE, 2008)
      Text en actes de congrés
      Accés obert
      The combination of an Artificial Neural Network classifier, a feature selection process, and a novel linear dimensionality reduction technique that provides a data projection for visualization and which preserves completely ...

    • Collective excitability in a mesoscopic neuronal model of epileptic activity 

      Jedynak, Maciej; Pons Rivero, Antonio Javier; García Ojalvo, Jordi (2018-01-12)
      Article
      Accés obert
      At the mesoscopic scale, the brain can be understood as a collection of interacting neuronal oscillators, but the extent to which its sustained activity is due to coupling among brain areas is still unclear. Herewe address ...

    • Comparison between gadolinium-enhanced 2D T1-weighted gradient-echo and spin-echo sequences in the detection of active multiple sclerosis lesions on 3.0T MRI 

      Aymerich Martínez, Francisco Javier; Auger, Cristina; Alcaide, Paula; Pareto Onghena, Deborah; Huerga, Elena; Corral Gámez, Juan Francisco; Mitjana, Raquel; Sastre Garriga, Jaume; Montalban, Xavier; Rovira, Alex (2017-04-01)
      Article
      Accés obert
      Objectives To compare the sensitivity of enhancing multiple sclerosis (MS) lesions in gadolinium-enhanced 2D T1-weighted gradient-echo (GRE) and spin-echo (SE) sequences, and to assess the influence of visual conspicuity ...

    • Complex temporal patterns processing by a neural mass model of a cortical column 

      Malagarriga, Daniel; Pons Rivero, Antonio Javier; Villa, Alejandro E. P. (2019-04-06)
      Article
      Accés obert
      It is well known that neuronal networks are capable of transmitting complex spatiotemporal information in the form of precise sequences of neuronal discharges characterized by recurrent patterns. At the same time, the ...

    • Computational study of brain tissue response to mechanical loading 

      Moure Alassio, Florencia Ines (Universitat Politècnica de Catalunya, 2023-10-10)
      Projecte Final de Màster Oficial
      Accés obert
      As the era of frequent human space travel nears, it becomes imperative to understand the brain’s reaction to microgravity conditions. This research delves into the intricate mechanics of brain tissue, focusing specifically ...

    • Cortical microstructural imaging from diffusion MRI: towards sensitive biomarkers for clinical trials 

      Rodriguez Vieitez, Elena; Vannini, Patrizia; Montal, Victor; Graff, Caroline (Oxford University Press, 2024)
      Article
      Accés restringit per política de l'editorial
      This scientific commentary refers to ‘Diffusion MRI tracks cortical microstructural changes during the early stages of Alzheimer’s disease’ by Spotorno et al. (https://doi.org/10.1093/brain/awad428).