Quantification in non-invasive cardiac imaging: CT and MR

__Abstract__ The diagnosis and management of cardiac disease require a precise assessment of morphological and functional cardiac parameters. This thesis is divided in three parts. Part I emphasizes the role of cardiac computed tomography (CT) in the diagnosis of patients with ischemic heart disease. Part 2 describes the role of cardiac magnetic resonance (CMR) and cardiac CT in the diagnosis, interventional planning, an

Planteamiento arquitectónico para un nuevo terminal terrestre de pasajeros del sur de Lima

El servicio de transporte de pasajeros presenta en la actualidad deficiencia en la prestación de servicios debido principalmente a la ubicación inapropiada de agencias y falta de terminales terrestres, El análisis de la problemática en el Cono sur es la carencia de un terminal terrestre para el embarque y desembarque de pasajeros, ya que actualmente las empresas están dispersas en diferentes puntos de la ciudad, sin el espacio adecuado para el desarrollo de sus funciones y actividades que implican el origen y/o término de un buen viaje, sin el equipamiento para el descanso de un largo viaje y seguridad adecuada, tanto como para los pasajeros, conductores y vehículos, por ello los autobuses utilizan los paraderos como Próceres, Alipio, etc., como un espacio para embarcar y desembarcar pasajeros, ocasionando caos y un servicio inapropiado,Tesi

Responding to mental health vulnerability in Maltese detention centres : the use of psychological support groups as an intervention tool

Maltese immigration law means that individuals seeking asylum in this country undergo a period of mandatory detention upon arrival lasting a maximum of 18 months. During their stay in detention centres, these individuals are exposed to an environment characterised by loss of liberty, prolonged inactivity, disconnection to family and the outside world and lack of adequate information about ongoing legal proceedings. It is hardly surprising that such a prolonged period of limbo, awash with isolation, uncertainty and degradation, has a negative impact on the mental health of individuals who, in the vast majority, have already experienced multiple personal losses. Research has in fact indicated that the majority of migrants detained in Europe reported deterioration in their mental health during their stay in detention. This article explores the impact of psychological support groups provided by non-state actors in Maltese detention centres aimed at educating about mental health issues, as well as at providing participants with a space where they can openly discuss their psychological difficulties and collaboratively explore ways to enhance their mental health within the constraints of detention. This paper discusses the challenges and benefits of conducting such a programme with an emphasis on how participants viewed the opportunity provided. This discussion analyses how these groups functioned as a medium enabling participants to voice their phenomenological experience of detention on both an individual and collective level and as an arena for negotiating a sense of self that is resilient to the experience of forced detention. In conclusion, this paper provides suggestions on how to address the psychological needs of migrants in closed centres.peer-reviewe

Trends in food consumption of university students

Los jóvenes universitarios necesitan consolidar buenos hábitos alimentarios basados en una adecuada selección de alimentos, los cuales constituyen un factor de fundamental importancia para mantener un buen estado de salud y prevenir enfermedades. Objetivo: Evaluar la ingesta de alimentos y el perfil de la dieta de estudiantes universitarios de Tucumán y su variación a través del tiempo. Analizar si cumplen las recomendaciones dietéticas actuales. Materiales y métodos: La recolección de datos se llevó a cabo durante los años 1998-1999 (G1) y 2012-2013 (G2); se realizó mediante una autoencuesta alimentaria y cuestionario de frecuencia de consumo de alimentos. Fue aplicada a 329 estudiantes universitarios seleccionados en forma aleatoria. El perfil alimentario se describió según la frecuencia de consumo habitual de los principales grupos de alimentos. Resultados: Los estudiantes resultaron 25,2% hombres y 74,8% mujeres, con edad promedio de 23±3 años. En general, en ambos grupos, la mayoría de los estudiantes presentó un IMC normal, sin embargo se destacó un elevado porcentaje de hombres con sobrepeso (18,2%) y obesidad (12,1%) y mujeres con bajo peso (11,6%). Según los grupos analizados y en función del sexo se observaron algunas diferencias estadísticamente significativas en la composición de macronutrientes de la dieta: en G1 fue mayor el consumo de carbohidratos en detrimento de proteínas y lípidos; se encontraron también diferencias en la ingesta de algunos micronutrientes, observándose mayor consumo de hierro y menor de vitaminas B1, B2, niacina y C en el G2. La dieta fue monótona para ambos grupos y con diferencias en el perfil de nutrientes que la conforman. La más notable fue el incremento gradual del consumo de productos azucarados, alimentos procesados, snacks y menor consumo de lácteos, pescados, frutas y vegetales en el G2. En ambos grupos, la adecuación de la ingesta alimentaria de la población estudiantil no cubrió las recomendaciones de hierro, calcio y vitamina A. Ante el perfil alimentario observado en la población universitaria, se advierte la necesidad de promover cambios para prevenir la aparición de obesidad y enfermedades cardiovasculares en la edad adulta; sería conveniente realizar mayor educación alimentario-nutricional.The university students need to consolidate good dietary habits based on an adequate selection of food, which is a factor of fundamental importance to maintain good health and prevent disease. Objective: To evaluate the food intake and diet profile of university students from Tucumán and its variation over time. Analyse if they accomplish current dietary recommendations. Material and method: Data collection was carried out during the years 1998-1999 (G1) and 2012-2013 (G2); was performed by a self-survey and food frequency questionnaire of food consumption. It was applied to 329 university students selected randomly. The dietary pattern was described by frequency of usual consumption of principal food groups. Results: Students were 25.2% male and 74.8% female, mean age 23 ± 3 years. In general, in both groups most of the students had a normal BMI, but had a high percentage of men with overweight (18.2%) and obesity (12.1%) and women with underweight (11.6%). According to the groups and sex analysis some significant statistically differences in macronutrient composition of the diet were observed: the G1 was higher carbohydrate intake than proteins and lipids; also differences in the intake of some micronutrients were found, with a higher intake of iron and less intake of vitamins B1, B2, niacin and C in G2. The diet was monotonous for both groups and with differences in the profile of nutrients. The most notable was the gradual increase consumption of sugary products, processed foods, snacks and decrease consumption of dairy, fish, fruits and vegetables in G2. In both groups, adequacy of dietary intake of the university students did not cover the recommendations of iron, calcium and vitamin A. Given the food profile observed in the student population, is warned the need to promote changes to prevent the development of obesity and cardiovascular disease in adulthood; it should be convenient to carrying out food and nutrition educationFil: de Piero Belmonte, Alexia Juliana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Investigaciones Biológicas. Universidad Nacional de Tucumán. Instituto Superior de Investigaciones Biológicas; ArgentinaFil: Bassett, Maria Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Investigaciones Biológicas. Universidad Nacional de Tucumán. Instituto Superior de Investigaciones Biológicas; ArgentinaFil: Rossi, Analia Mabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Investigaciones Biológicas. Universidad Nacional de Tucumán. Instituto Superior de Investigaciones Biológicas; ArgentinaFil: Samman, Norma Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Investigaciones Biológicas. Universidad Nacional de Tucumán. Instituto Superior de Investigaciones Biológicas; Argentin

On the modeling of patient-specific transcatheter aortic valve replacement: a fluid–structure interaction approach

This is a post-peer-review, pre-copyedit version of an article published in Cardiovascular engineering and technology. The final authenticated version is available online at: http://dx.doi.org/10.1007/s13239-019-00427-0Purpose Transcatheter aortic valve replacement (TAVR) is a minimally invasive treatment for high-risk patients with aortic diseases. Despite its increasing use, many influential factors are still to be understood and require continuous investigation. The best numerical approach capable of reproducing both the valves mechanics and the hemodynamics is the fluid–structure interaction (FSI) modeling. The aim of this work is the development of a patient-specific FSI methodology able to model the implantation phase as well as the valve working conditions during cardiac cycles. Methods The patient-specific domain, which included the aortic root, native valve and calcifications, was reconstructed from CT images, while the CAD model of the device, metallic frame and pericardium, was drawn from literature data. Ventricular and aortic pressure waveforms, derived from the patient’s data, were used as boundary conditions. The proposed method was applied to two real clinical cases, which presented different outcomes in terms of paravalvular leakage (PVL), the main complication after TAVR. Results The results confirmed the clinical prognosis of mild and moderate PVL with coherent values of regurgitant volume and effective regurgitant orifice area. Moreover, the final release configuration of the device and the velocity field were compared with postoperative CT scans and Doppler traces showing a good qualitative and quantitative matching. Conclusion In conclusion, the development of realistic and accurate FSI patient-specific models can be used as a support for clinical decisions before the implantation.Peer ReviewedPostprint (author's final draft

1114 The number of short-axis series for MR left ventricular analysis can be reduced when a combined long-axis and short-axis analysis strategy is used

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