55 research outputs found

    Sistema compacto, híbrido e integrado GAMMA/RF para la formación de imágenes simultáneas PETSPECT/MR

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    Sistema compacto, híbrido e integrado GAMMA/RF para la formación de imágenes simultáneas PET-SPECT/MR. El sistema compacto, híbrido e integrado GAMMA-RF para la formación de imágenes simultáneas PET-SPECT/MR de la invención comprende un dispositivo GAMMA-RF que integra una bobina RF, del tipo empleado en sistemas MR convencionales, con unos módulos detectores de radiación GAMMA del tipo utilizado en sistemas PET o SPECT, de modo que se obtienen imágenes combinadas de las técnicas PET o SPECT y MR.Peer reviewedConsejo Superior de Investigaciones Científicas (España), Universidad de Valencia, Universidad Politécnica de Valencia, General Equipment for Medical Imaging SA, Exploraciones Radiológicas Especiales SA (ERESA)A1 Solicitud de patente con informe sobre el estado de la técnic

    Constraints on the dipole photon strength for the odd uranium isotopes

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    Nuclear level densities (NLDs) and photon strength functions (PSFs), also called ¿ -ray or radiation strength functions, represent average properties of the nucleus in the regime of excitation where individual levels and transition probabilities by ¿ decay are not readily accessible by experimental or theoretical means. They are key ingredients for statistical calculations of the reaction cross sections involving ¿ rays via the Hauser-Feshbach approach [1], like inelastic scattering or neutron capture reactions.Peer ReviewedAquest article té 124 autors/autores J. Moreno-Soto, S. Valenta, E. Berthoumieux, A. Chebboubi, M. Diakaki, W. Dridi, E. Dupont, F. Gunsing, M. Krticka, O. Litaize, O. Serot, O. Aberle, V. Alcayne, S. Amaducci, J. Andrzejewski, L. Audouin, V. Bécares, V. Babiano-Suarez, M. Bacak, M. Barbagallo, Th. Benedikt, S. Bennett, J. Billowes, D. Bosnar, A. Brown, M. Busso, M. Caamaño, L. Caballero-Ontanaya, F. Calviño, M. Calviani, D. Cano-Ott, A. Casanovas, F. Cerutti, E. Chiaveri, N. Colonna, G. Cortés, M. A. Cortés-Giraldo, L. Cosentino, Cristallo, L. A. Damone, P. J. Davies, M. Dietz, C. Domingo-Pardo, R. Dressler, Q. Ducasse, I. Durán, Z. Eleme, B. Fernández-Domínguez, A. Ferrari, P. Finocchiaro, V. Furman, K. Göbel, A. Gawlik-Rami, S. Gilardoni, I. F. Gonçalves, E. González-RomeroC. Guerrero, S. Heinitz, J. Heyse, D. G. Jenkins, A. Junghans, F. Käppeler, Y. Kadi, A. Kimura, I. Knapová, M. Kokkoris, Y. Kopatch, D. Kurtulgil, I. Ladarescu, C. Lampoudis, C. Lederer-Woods, S. J. Lonsdale, D. Macina, A. Manna, T. Martínez, A. Masi, C. Massimi, P. Mastinu, M. Mastromarco, E. A. Maugeri, A. Mazzone, E. Mendoza, A. Mengoni, V. Michalopoulou, P. M. Milazzo, F. MingroneA. Musumarra, A. Negret, R. Nolte, F. Ogállar, A. Oprea, N. Patronis, A. Pavlik, J. Perkowski, L. Piersanti, C. Petrone, E. Pirovano, I. Porras, J. Praena, J. M. Quesada, D. Ramos-Doval, T. Rauscher, R. Reifarth, D. Rochman, M. Sabaté-Gilarte, A. Saxena, P. Schillebeeckx, D. Schumann, A. Sekhar, A. G. Smith, N. V. Sosnin, P. Sprung, A. Stamatopoulos, G. Tagliente, J. L. Tain, A. Tarifeño-Saldivia, L. Tassan-Got, P. Torres-Sánchez, A. Tsinganis, J. Ulrich, S. Urlass, G. Vannini, V. Variale, P. Vaz, A. Ventura, D. Vescovi, V. Vlachoudis, R. Vlastou, A. Wallner, P. J. Woods, T. Wright, P. ŽugecPostprint (published version

    First Results of the 140^{140}Ce(n,γ)141^{141}Ce Cross-Section Measurement at n_TOF

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    An accurate measurement of the 140^{140}Ce(n,γ) energy-dependent cross-section was performed at the n_TOF facility at CERN. This cross-section is of great importance because it represents a bottleneck for the s-process nucleosynthesis and determines to a large extent the cerium abundance in stars. The measurement was motivated by the significant difference between the cerium abundance measured in globular clusters and the value predicted by theoretical stellar models. This discrepancy can be ascribed to an overestimation of the 140^{140}Ce capture cross-section due to a lack of accurate nuclear data. For this measurement, we used a sample of cerium oxide enriched in 140^{140}Ce to 99.4%. The experimental apparatus consisted of four deuterated benzene liquid scintillator detectors, which allowed us to overcome the difficulties present in the previous measurements, thanks to their very low neutron sensitivity. The accurate analysis of the p-wave resonances and the calculation of their average parameters are fundamental to improve the evaluation of the 140^{140}Ce Maxwellian-averaged cross-section

    First Results of the 140^{140}Ce(n,γ)141^{141}Ce Cross-Section Measurement at n_TOF

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    An accurate measurement of the 140^{140}Ce(n,γ) energy-dependent cross-section was performed at the n_TOF facility at CERN. This cross-section is of great importance because it represents a bottleneck for the s-process nucleosynthesis and determines to a large extent the cerium abundance in stars. The measurement was motivated by the significant difference between the cerium abundance measured in globular clusters and the value predicted by theoretical stellar models. This discrepancy can be ascribed to an overestimation of the 140^{140}Ce capture cross-section due to a lack of accurate nuclear data. For this measurement, we used a sample of cerium oxide enriched in 140^{140}Ce to 99.4%. The experimental apparatus consisted of four deuterated benzene liquid scintillator detectors, which allowed us to overcome the difficulties present in the previous measurements, thanks to their very low neutron sensitivity. The accurate analysis of the p-wave resonances and the calculation of their average parameters are fundamental to improve the evaluation of the 140^{140}Ce Maxwellian-averaged cross-section

    Study of the feasibility of a compact gamma camera for real-time cancer assessment

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    Results from the simulations of a Compton gamma camera based on compact configuration of detectors consisting in two detection modules, each of them having two stages of high-resolution position- and energy sensitive radiation detectors operated in time-coincidence are presented. Monolithic scintillation crystals instead of pixelated crystals in order to reduce dead areas have been simulated. In order to study the system feasibility to produce real-time images, different setups are considered. Performance in terms of acquisition times have been calculated to determine the real-time capabilities and limitations of such a system

    被験者の第1の画像および第2の画像を生成するシステム及びシステムの作動方法

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    本発明は腫瘍学的診断およびリアルタイムガイド下生検に適したデュアル画像システムに関し、1つ以上の解剖学的画像に関連する信号を得るための超音波撮像装置(1)と、1つ以上の機能画像に関連する信号を得るためのガンマ線検出器(2)と、検出器(1、2)によって得られた信号を処理するための電子モジュール(3)と、検出器(1、2)を収容するケーシング(4)とを含み、ガンマ線検出器(2)が少なくとも2つの個別のガンマ線検出器(2a、2b)を実質的に同じ検出方向に、かつ互いに実質的に平行に整列させて含み、超音波撮像装置(1)およびガンマ線検出器(2)が、互いに実質的に整列させた同じ検出方向を有することを特徴とする。Peer reviewedConsejo Superior de Investigaciones Científicas, Universitat de ValènciaB2 Patente con examen previ

    Système d'image duale conçu pour son utilisation dans des diagnostics oncologiques et biopsies guidées en temps réel

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    The present invention relates to a dual image system, suitable for oncological diagnoses and real time guided biopsies, comprising: an ultrasound imaging device (1) for obtaining associated signals with one or more anatomical images; a gamma ray detector (2) for obtaining associated signals with one or more functional images; an electronic module (3) for processing the obtained signals by the detectors (1, 2); a casing (4) housing the detectors (1, 2); characterized in that the gamma ray detector (2) is a gamma ray Compton scattering detector, comprising at least two individual gamma detectors (2a, 2b) substantially aligned in the same detection direction and with the detection surfaces substantially parallel to each other; the ultrasound imaging device (1) and the gamma ray detector (2) have the same detection directions substantially aligned with each other.Peer reviewedConsejo Superior de Investigaciones Científicas, Universitat de ValènciaA1 Solicitud de patente con informe sobre el estado de la técnic

    Sistema de imagen dual apto para su uso en diagnósticos oncológicos y biopsias guiadas en tiempo real

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    The present invention relates to a dual image system, suitable for oncological diagnoses and real time guided biopsies, comprising: an ultrasound imaging device (1) for obtaining signals associated with one or more anatomical images; a gamma ray detector (2) for obtaining signals associated with one or more functional images; an electronic module (3) for processing the signals obtained by the detectors (1, 2); a casing (4) housing the detectors (1, 2); characterized in that the gamma ray detector (2) is a gamma ray Compton scattering detector, comprising at least two individual gamma detectors (2a, 2b) aligned substantially in the same detection direction and with the detection surfaces substantially parallel to each other; the ultrasound imaging device (1) and the gamma ray detector (2) have detection directions substantially aligned with each other. [EN]La invención se refiere a un sistema de imagen dual, apto para su uso en diagnósticos oncológicos y biopsias guiadas en tiempo real, que comprende: un dispositivo de imagen por ultrasonidos (1) para la obtención de señales asociadas a una o más imágenes anatómicas; un detector de rayos gamma (2) para la obtención de señales asociadas a una o más imágenes funcionales; un módulo de electrónica (3) para procesar las señales obtenidas por los detectores (1, 2); una carcasa (4) que aloja los detectores (1, 2); caracterizado por que el detector de rayos gamma (2) es un detector de dispersión Compton de rayos gamma, que comprende al menos dos detectores individuales (2a, 2b) gamma alineados sustancialmente en la misma dirección de detección y con planos de detección sustancialmente paralelos entre sí; el dispositivo de imagen por ultrasonidos (1) y el detector de rayos gamma (2) poseen unas direcciones de detección sustancialmente alineadas entre sí. [ES]Peer reviewedConsejo Superior de Investigaciones Científicas (España), Universitat de ValènciaA1 Solicitud de patente con informe sobre el estado de la técnic

    腫瘍学的診断およびリアルタイムガイド下生検に適したデュアル画像システム

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    本発明は腫瘍学的診断およびリアルタイムガイド下生検に適したデュアル画像システムに関し、1つ以上の解剖学的画像に関連する信号を得るための超音波撮像装置(1)と、1つ以上の機能画像に関連する信号を得るためのガンマ線検出器(2)と、検出器(1、2)によって得られた信号を処理するための電子モジュール(3)と、検出器(1、2)を収容するケーシング(4)とを含み、ガンマ線検出器(2)が少なくとも2つの個別のガンマ線検出器(2a、2b)を実質的に同じ検出方向に、かつ互いに実質的に平行に整列させて含み、超音波撮像装置(1)およびガンマ線検出器(2)が、互いに実質的に整列させた同じ検出方向を有することを特徴とする。Peer reviewedConsejo Superior de Investigaciones Científicas, Universitat de ValènciaA1 Solicitud de patente con informe sobre el estado de la técnic

    Dual image system suitable for oncological diagnoses and real time guided biopsies

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    The present invention relates to a dual image system, suitable for oncological diagnoses and real time guided biopsies, comprising: an ultrasound imaging device (1) for obtaining associated signals with one or more anatomical images; a gamma ray detector (2) for obtaining associated signals with one or more functional images; an electronic module (3) for processing the obtained signals by the detectors (1, 2); a casing (4) housing the detectors (1, 2); characterized in that the gamma ray detector (2) is a gamma ray Compton scattering detector, comprising at least two individual gamma detectors (2a, 2b) substantially aligned in the same detection direction and with the detection surfaces substantially parallel to each other; the ultrasound imaging device (1) and the gamma ray detector (2) have the same detection directions substantially aligned with each other.Peer reviewedConsejo Superior de Investigaciones Científicas, Universitat de ValènciaA1 Solicitud de patente con informe sobre el estado de la técnic
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