- -

Browsing by Author "Rodríguez Álvarez, María José"

RiuNet: Institutional repository of the Polithecnic University of Valencia

Browsing by Author "Rodríguez Álvarez, María José"

Sort by: Order: Results:

  • thumb
    2D feasibility study of joint reconstruction of attenuation and activity in limited angle TOF-PET 
    Vergara, Marina; Rezaei, Ahmadreza; Schramm, Georg; Rodríguez-Álvarez, María José; Benlloch Baviera, Jose María; Nuyts, Johan (Institute of Electrical and Electronics Engineers, 2021-09)
    [EN] Several research groups are studying organ-dedicated limited angle positron emission tomography (PET) systems to optimize performance-cost ratio, sensitivity, access to the patient, and/or flexibility. Often open ...
  • thumb
    2D study of a joint reconstruction algorithm for limited angle PET geometries 
    Vergara, Marina; Rezaei, Ahmadreza; Rodríguez-Álvarez, Maria Jose; Benlloch Baviera, Jose María; Nuyts, Johan (KU Leuven, 2021-07-23)
    [EN] Recently, a wide interest on organ-dedicated PET systems has been shown. Some of those systems present geometries that produce an incomplete sampling of the tomographic data due to limited angular coverage and/or ...
  • thumb
    Acotación de funciones continuas en un intervalo cerrado 
    Rodríguez Álvarez, María José (Universitat Politècnica de València, 2015-04-14)
    En este vídeo se explica brevemente como encontrar una cota superior para una función continua en un intervalo cerrado. Se proponen tres ejercicios tipo y se resuelven.
  • thumb
    ALBIRA: A small animal PET/SPECT/CT imaging system 
    Sánchez Martínez, Filomeno; Orero Palomares, Abel; Soriano Asensi, Antonio; Correcher Salvador, Carlos; Conde Castellanos, Pablo Eloy; González Martínez, Antonio Javier; Hernández Hernández, Liczandro; Moliner Martínez, Laura; Rodríguez Álvarez, María José; Vidal San Sebastián, Luis Fernando; Benlloch Baviera, Jose María; Chapman, S.E.; Leevy, W.M. (American Association of Physicists in Medicine: Medical Physics, 2013-05)
    Purpose: The authors have developed a trimodal PET/SPECT/CT scanner for small animal imaging. The gamma ray subsystems are based on monolithic crystals coupled to multianode photomultiplier tubes (MA-PMTs), while computed ...
  • thumb
    Algoritmo de reconstrucción analítico para el escáner basado en cristales monolíticos MINDView 
    Sánchez Góez, Sebastián (Universitat Politècnica de València, 2021-01-17)
    [ES] La tomografía por emisión de positrones (PET, del inglés Positron Emission Tomography) es una técnica de medicina nuclear en la que se genera una imagen a partir de la detección de rayos gamma en coincidencia. Estos ...
  • thumb
    Analysis of the Statistical Moments of the Scintillation Light Distribution With dSiPMs 
    Conde Castellanos, Pablo Eloy; González Martínez, Antonio Javier; Gonzalez, A.; Hernández Hernández, Liczandro; Bellido, P.; Crespo Navarro, Efren; Iborra Carreres, Amadeo; Moliner Martínez, Laura; Rigla Pérez, Juan Pablo; Rodríguez Álvarez, María José; Sanchez, F.; Seimetz, Michael; Soriano Asensi, Antonio; Vidal San Sebastián, Luis Fernando; Benlloch Baviera, Jose María (Institute of Electrical and Electronics Engineers (IEEE), 2015-10)
    In gamma-ray detectors, monolithic scintillation crystals offer the possibility of preserving the scintillation light distribution especially when painted black. The statistical moments of this distribution provide accurate ...
  • thumb
    Aplicación de métodos de machine learning a la espectroscopía de protones acelerados por láser 
    Calatayud Giner, Javier (Universitat Politècnica de València, 2019-10-03)
    [ES] En este trabajo de fin de grado se ha desarrollado un sistema de clasificación automática de imágenes microscópicas basado en tecnología de Deep Learning. Estas imágenes son el resultado de un experimento en el que ...
  • thumb
    Artificial Intelligence on FDG PET Images Identifies Mild Cognitive Impairment Patients with Neurodegenerative Disease 
    Prats-Climent, Joan; Gandia-Ferrero, Maria Teresa; Torres-Espallardo, Irene; Álvarez-Sanchez, Lourdes; Martinez-Sanchis, Begoña; Cháfer-Pericás, Consuelo; Gómez-Rico, Ignacio; Cerdá-Alberich, Leonor; Aparici-Robles, Fernando; Baquero-Toledo, Miquel; Rodríguez-Álvarez, M. J.; Marti-Bonmati, Luis (Springer-Verlag, 2022-06-17)
    [EN] The purpose of this project is to develop and validate a Deep Learning (DL) FDG PET imaging algorithm able to identify patients with any neurodegenerative diseases (Alzheimer's Disease (AD), Frontotemporal Degeneration ...
  • thumb
    Assessment of mesial temporal sclerosis through MRI processing 
    Castillo-Malla, Darwin Patricio; Samaniego, R.; Jimenez-Gaona, Yuliana; Sánchez, A.; Carrión, J.; Rodríguez-Álvarez, M. J. (SPIE, The International Society for Optical Engineering, 2020-08-20)
    [EN] Mesial temporal sclerosis (MTS) is the principal cause of complex epilepsy, is manifested principally by gliosis and hippocampal volume loss. This project aims to develop an algorithm that allows automatic measurement ...
  • thumb
    Behaviour of uranium along Jucar River (Eastern Spain) Determination of 234U/238U and 235U/238U ratios 
    Rodríguez Álvarez, María José; Sanchez, F. (Springer VerlagAkadémiai Kiadó, 1995-02)
    The uranium concentration and the U-234/U-238, U-235/U-238 activity ratios were studied in water samples from Jucar River, using low-level alpha-spectrometry. The effects of pH, temperature and salinity were considered and ...
  • thumb
    Breast medical images classification through the application of deep learning processing technologies 
    Jiménez Gaona, Yuliana del Cisne (Universitat Politècnica de València, 2024-09-02)
    [ES] El cáncer de mama es una de las principales causas de muerte en mujeres de todo el mundo. Supone el 18.2% de las muertes por cáncer en la mujer y la primera causa de muerte en mujeres entre 40 y 55 años según la ...
  • thumb
    Building blocks of a multi-layer PET with time sequence photon interaction discrimination and double Compton camera 
    Ilisie, V.; Giménez-Alventosa, Vicent; Moliner Martínez, Laura; Sánchez, F.; González Martínez, Antonio Javier; Rodríguez-Álvarez, M.J.; Benlloch Baviera, Jose María (Elsevier, 2018)
    [EN] Current PET detectors have a very low sensitivity, of the order of a few percent. One of the reasons is the fact that Compton interactions are rejected. If an event involves multiple Compton scattering and the total ...
  • thumb
    Calibration and Performance Tests of Detectors for Laser-Accelerated Protons 
    Seimetz, Michael; Bellido, P.; Soriano Asensi, Antonio; García López, J.; Jiménez-Ramos, M.C.; Fernández, B.; Conde Castellanos, Pablo Eloy; Crespo Navarro, Efren; González Martínez, Antonio Javier; Hernández Hernández, Liczandro; Iborra Carreres, Amadeo; Moliner Martínez, Laura; Rigla Pérez, Juan Pablo; Rodríguez Álvarez, María José; Sanchez, F.; Sanchez, S.; Vidal San Sebastián, Luis Fernando; Benlloch Baviera, Jose María (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    We present the calibration and performance tests carried out with two detectors for intense proton pulses accelerated by lasers. Most of the procedures were realized with proton beams of 0.46-5.60 MeV from a tandem ...
  • thumb
    Cálculo de dominios de funciones reales 
    Rodríguez Álvarez, María José (Universitat Politècnica de València, 2016-05-04)
    Este objeto de aprendizaje esta dedicado al cálculo de dominios de funciones reales.
  • thumb
    Cálculo de integrales utilizando cambio de variable 
    Rodríguez Álvarez, María José (Universitat Politècnica de València, 2016-05-04)
    Este objeto de aprendizaje esta dedicado a la utilización de cambio de variables para el cálculo de integrales.
  • thumb
    Characterization of protons accelerated from a 3 TW table-top laser system 
    Bellido-Millán, Pablo Jesús; Lera, Roberto; Seimetz, Michael; Ruiz-de la Cruz, Alexandro; Torres Peiró, Salvador; Galán, M.; Mur, P.; Sánchez, I.; Zaffino, R.; Vidal San Sebastian, Luis Fernando; Soriano Asensi, Antonio; Sánchez-Góez, Sebastián; Sánchez Martínez, Filomeno; Rodríguez-Álvarez, M.J.; Rigla, J.P.; Moliner Martínez, Laura; Iborra Carreres, Amadeo; Hernández Hernández, Liczandro; Grau-Ruiz, Daniel; González Martínez, Antonio Javier; García-Garrigos, Juan José; Díaz Caballero, Elena; Conde-Castellanos, Pablo Eloy; Aguilar-Talens, Albert; Roso, Luis; Benlloch Baviera, Jose María (IOP Publishing, 2017-05)
    [EN] We report on benchmark tests of a 3 TW/50 fs, table-top laser system specifically developed for proton acceleration with an intrinsic pump rate up to 100 Hz. In two series of single-shot measurements differing in pulse ...
  • thumb
    Deep learning for MRI-based CT synthesis: a comparison of MRI sequences and neural network architectures 
    Larroza, Andrés; Moliner, Laura; Álvarez-Gómez, Juan Manuel; Oliver-Gil, Sandra; Espinós-Morató, Héctor; Vergara-Díaz, Marina; Rodríguez-Álvarez, María J. (IEEE, 2019-11-02)
    [EN] Synthetic computed tomography (CT) images derived from magnetic resonance images (MRI) are of interest for radiotherapy planning and positron emission tomography (PET) attenuation correction. In recent years, deep ...
  • thumb
    Deep-Learning-Based Computer- Aided Systems for Breast Cancer Imaging: A Critical Review 
    Jiménez-Gaona, Yuliana; Rodríguez Álvarez, María José; Lakshminarayanan, Vasudevan (MDPI AG, 2020-11)
    [EN] This paper provides a critical review of the literature on deep learning applications in breast tumor diagnosis using ultrasound and mammography images. It also summarizes recent advances in computer-aided diagnosis/detection ...
  • thumb
    Demyelinating and ischemic brain diseases: detection algorithm through regular magnetic resonance images 
    Castillo, D.; Samaniego, R.; Jiménez, Y.; Cuenca, L.; Vivanco, O.; Rodríguez-Álvarez, MJ (The International Society for Optical Engineering., 2017)
    [EN] This work presents the advance to development of an algorithm for automatic detection of demyelinating lesions and cerebral ischemia through magnetic resonance images, which have contributed in paramount importance ...
  • thumb
    Derivación de series de potencias 
    Rodríguez Álvarez, María José (Universitat Politècnica de València, 2015-04-24)
    En este objeto de aprendizaje se hace un breve resumen introductorio de como derivar series de potencias, a continuación se hacen dos ejemplos de ejercicios tipo de derivación de series de potencias..