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Listar por autor "Iborra Carreres, Amadeo"

Mostrando ítems 1-20 de 21

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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 ...
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 ...
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 ...
Detector blockbased on arrays of 144 SiPMs and monolithic scintillators: A performane study

González Martínez, Antonio Javier; Conde Castellanos, Pablo Eloy; Iborra Carreres, Amadeo; Aguilar, A.; Bellido, P.; Garcia-Olcina, R.; Hernández Hernández, Liczandro; Moliner Martínez, Laura; Rigla, J. P.; Rodríguez Álvarez, María José; Sánchez, F; Seimetz, Michael; Soriano Asensi, Antonio; Torres, Jose; Vidal San Sebastián, Luis Fernando; Benlloch Baviera, Jose María (Elsevier, 2015-07-01)

[EN] We have developed a detector block composed by a monolithic LYSO scintillator coupled to a custom made 12 12 SiPMs array. The design is mainly focused to applications such as Positron Emission Tomography. The ...
Development of a New 3D Reconstruction Algorithm for Computed Tomography (CT)

Iborra Carreres, Amadeo (Universitat Politècnica de València, 2016-01-07)

[EN] Model-based computed tomography (CT) image reconstruction is dominated by iterative algorithms. Although long reconstruction times remain as a barrier in practical applications, techniques to speed up its convergence ...
Dosimetric Calibration of Radiochromic Film For Laser-accelerated Proton Beams

Bellido, P.; Seimetz, Michael; Soriano, A.; Huertas, C.; García Lopez, J.; Jimenez-Ramos, M. C:; Fernandez, B.; Conde, P.; Crespo, E.; González Martínez, Antonio Javier; Hernández, L.; Iborra, A.; Martos, F.; Moliner, L.; Rigla, J. P.; Rodríguez-Álvarez, M. J.; Sánchez, F.; Vidal San Sebastian, Luis Fernando; Benlloch Baviera, Jose María (IEEE, 2013-11-02)

[Otros] When an ultra-intense and ultra-short laser pulse interacts with solid matter a fraction of the laser pulse can be converted into kinetic energy of a beam of charged particles. Radiochromic film (RCF), widely ...
Effect of noise in CT image reconstruction using QR- Decomposition algorithm

Iborra, A.; Rodríguez-Álvarez, M. J.; Soriano, A.; Sánchez, F.; Bellido, P.; Conde, P.; Crespo, E.; González Martínez, Antonio Javier; Martos, F.; Moliner, L.; Rigla, J. P.; Seimetz, Michael; Vidal San Sebastian, Luis Fernando; Benlloch Baviera, Jose María (IEEE, 2013-11-02)

[EN] The QR-Decomposition algorithm for CT 3D image reconstruction uses a linear system of equations to model the CT system response. Linear systems have a condition number that can be used to estimate the image noise. ...
EM tomographic image reconstruction using polarvoxels

Soriano Asensi, Antonio; Rodríguez Álvarez, María José; Iborra Carreres, Amadeo; Sánchez Martínez, Filomeno; Carles Fariña, Montserrat; Conde Castellanos, Pablo Eloy; González Martínez, Antonio Javier; Hernández Hernández, Liczandro; Moliner Martínez, Laura; Orero Palomares, Abel; Vidal San Sebastián, Luis Fernando; Benlloch Baviera, Jose María (Institute of Physics: Hybrid Open Access, 2013-01)

[EN] The splitting of the field of view (FOV) in polar voxels is proposed in this work in order to obtain an efficient description of a cone-beam computed tomography (CT) scanner. The proposed symmetric-polar pixelation ...
Ensemble of neural networks for 3D position estimation in monolithic PET detectors

Iborra Carreres, Amadeo; González Martínez, Antonio Javier; González, A.; Bousse, A.; Visvikis, Dimitris (IOP Publishing, 2019-10-04)

[EN] We propose an ensemble of multilayer feedforward neural networks to estimate the 3D position of photoelectric interactions in monolithic detectors. The ensemble is trained with data generated from optical Monte Carlo ...
Estudio de simetrías en el diseño de la matriz de pesos para imágenes TAC

Iborra Carreres, Amadeo (Universitat Politècnica de València, 2012-05-11)

Proponemos varios métodos de construcción de la matriz del sistema (SM) de un escáner de Tomografía Axial Computerizada (TAC) con dos objetivos: primero construir SMs en el menor tiempo posible y guardarlas en PCs ...
Expectation maximization (EM) algorithms using polar symmetriesfor computed tomography(CT) image reconstruction

Rodríguez Álvarez, María José; Soriano Asensi, Antonio; Iborra Carreres, Amadeo; Sánchez Martínez, Filomeno; González Martínez, Antonio Javier; Conde, P.; Hernández Hernández, Liczandro; Moliner Martínez, Laura; Orero Palomares, Abel; Vidal San Sebastián, Luis Fernando; Benlloch Baviera, Jose María (Elsevier, 2013-09-01)

We suggest a symmetric-polar pixellation scheme which makes possible a reduction of the computational cost for expectation maximization (EM) iterative algorithms. The proposed symmetric-polar pixellation allows us to deal ...
Exploiting symmetries for weight matrix design in CT imaging

Rodríguez-Álvarez, María-José; Sánchez Martínez, Filomeno; Soriano Asensi, Antonio; Iborra Carreres, Amadeo; Mora Mora, Cibeles (Elsevier, 2011-10)

In this paper we propose several methods of constructing the system matrix (SM) of a Computed Tomography (CT) scanner with two objectives: (1) to construct SMs in the shortest possible time and store them in an ordinary ...
Noise Analysis in Computed Tomography (CT) Image Reconstruction using QR-Decomposition Algorithm

Iborra Carreres, Amadeo; Rodríguez Álvarez, María José; Soriano Asensi, Antonio; Sanchez, F.; Bellido, P.; Conde Castellanos, Pablo Eloy; Crespo Navarro, Efren; González Martínez, Antonio Javier; Moliner Martínez, Laura; Rigla Pérez, Juan Pablo; Seimetz, Michael; Vidal San Sebastián, Luis Fernando; Benlloch Baviera, Jose María (Institute of Electrical and Electronics Engineers (IEEE), 2015-06)

In this paper, the noise of 3D computed tomography (CT) image reconstruction using QR-Decomposition is analyzed. There are several types of image noise that can interfere with the interpretation of an image. Here, the ...
Performance Evaluation of the Dual Ring MAMMI breast PET

Soriano, A.; Sánchez, F.; Carrilero, V.; Pardo, A.; Vidal San Sebastian, Luis Fernando; Vazquez, C.; Barbera, J.; Seimetz, Michael; Rodríguez-Álvarez, M.J.; Rigla, J. P.; Moliner, L.; Iborra, A.; Hernández, L.; González Martínez, Antonio Javier; Crespo, E.; Conde, P.; Bellido, P.; Caballero, L.; Benlloch Baviera, Jose María (IEEE, 2013-11-02)

[EN] MAMMI is a dedicated breast positron emission tomograph (PET) based on monolythic LYSO crystals, with a transaxial field of view (FOV) of 170 mm. It has been upgraded by adding a second ring of detectors that extends ...
Reconstrucción de alta resolución en tomografía axial computerizada : cálculo de una matriz del sistema polar por el método de Joseph

Iborra Carreres, Amadeo (Universitat Politècnica de València, 2011-03-01)
Results of a combined monolithic crystal and an array of ASICs controlled SiPMs

Conde Castellanos, Pablo Eloy; González Martínez, Antonio Javier; Hernández Hernández, Liczandro; Bellido, P.; Iborra Carreres, Amadeo; Crespo Navarro, Efren; Moliner Martínez, Laura; Rigla, JP.; Rodríguez Álvarez, María José; Sánchez, F.; Seimetz, Michael; Soriano Asensi, Antonio; Vidal San Sebastián, Luis Fernando; Benlloch Baviera, Jose María (Elsevier, 2014-01)

[EN] In this work we present the energy and spatial resolutions we have obtained for a γ ray detector based on a monolithic LYSO crystal coupled to an array of 256 SiPMs. Two crystal configurations of the same trapezoidal ...
Sparse Givens resolution of large system of linear equations: applications to image reconstruction

Rodríguez Álvarez, María José; Sánchez, Filomeno; Soriano Asensi, Antonio; Iborra Carreres, Amadeo (Elsevier, 2010-10)

In medicine, computed tomographic images are reconstructed from a large number of measurements of X-ray transmission through the patient (projection data). The mathematical model used to describe a computed tomography ...
Spectral characterization of laser-accelerated protons with CR-39 nuclear track detector

Seimetz, Michael; Bellido-Millán, Pablo Jesús; García, P.; Mur, P.; Iborra Carreres, Amadeo; Soriano Asensi, Antonio; Hülber, T.; Garcia Lopez, J.; Jiménez-Ramos, M. C.; Lera, Roberto; Ruiz-de la Cruz, A.; Sánchez, I.; Zaffino, R.; Roso, Luis; Benlloch Baviera, Jose María (American Institute of Physics, 2018-02)

[EN] CR-39 nuclear track material is frequently used for the detection of protons accelerated in laserplasma interactions. The measurement of track densities allows for determination of particle angular distributions, and ...
Statistical moments of scintillation light distribution analysis with dSiPMs and monolithic crystals

Conde, P.; González Martínez, Antonio Javier; Hernández, L.; Bellido, P.; Crespo, E.; Iborra, A.; Moliner, L.; Rigla, J. P.; Rodríguez-Álvarez, M.J.; Sánchez, F.; Seimetz, Michael; Soriano, A.; Vidal San Sebastian, Luis Fernando; Benlloch Baviera, Jose María (IEEE, 2013-11-02)

[EN] Monolithic scintillation crystals offer the possibility to preserve the scintillation light distribution, specially when black painted. Furthermore, the statistical moments of that distribution can provide accurate ...
Time reconstruction study using tubes of response backprojectors in List Mode algorithms, applied to amonolithic crystals based breast PET

Moliner, L.; Correcher, C.; González Martínez, Antonio Javier; Conde, P.; Crespo, E.; Hernandez, L.; Rigla, J. P.; Rodriguez-Alvarez, M. J.; Sanchez, F.; Soriano, A.; Iborra, A.; Bellido, P.; Seimetz, Michael; Vidal San Sebastian, Luis Fernando; Benlloch Baviera, Jose María (IEEE, 2013-11-02)

[EN] The LM-EM algorithm has the advantage to calculate the emission probabilities needed for the reconstruction process on the fly, without the need of a pre-calculated system matrix. The reconstruction time for this ...