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The analysis of colonic contents is a valuable tool for the gastroenterologist and has multiple applications in clinical routine. When considering magnetic resonance imaging (MRI) modalities, T2 weighted images are capable of segmenting the colonic lumen, whereas fecal and gas contents can only be distinguished in T1 weighted images. In this paper, we present an end-to-end quasi-automatic framework that comprises all the steps needed to accurately segment the colon in T2 and T1 images and to extract colonic content and morphology data to provide the quantification of colonic content and morphology data. As a consequence, physicians have gained new insights into the effects of diets and the mechanisms of abdominal distension.

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Thehapticrenderingofsurfacemesostructure(finerelieffeatures)indensetrianglemeshesrequires special structures, equipment, and high sampling rates for detailed perception of rugged models. Low cost approaches render haptic texture at the expense of fidelity of perception. We propose a faster method for sur- face haptic rendering using image-based Hybrid Rugosity Mesostructures (HRMs), paired maps with per-face heightfield displacements and normal maps, which are layered on top of a much decimated mesh, effectively adding greater surface detail than actually present in the geometry. The haptic probe’s force response algorithm is modulated using the blended HRM coat to render dense surface features at much lower costs. The proposed method solves typical problems at edge crossings, concave foldings and texture transitions. To prove the well- ness of the approach, a usability testbed framework was built to measure and compare experimental results of haptic rendering approaches in a common set of specially devised meshes, HRMs, and performance tests. Trial results of user testing evaluations show the goodness of the proposed HRM technique, rendering accurate 3D surface detail at high sampling rates, deriving useful modeling and perception thresholds for this technique.

Resumen: Introducción: El síndrome de apneas-hipopneas del sueño (SAHS) y la obesidad infantil son dos entidades con alta prevalencia que constituyen un problema de salud pública. Objetivo: Analizar la interacción entre ambas, comparando grupos de niños que presentaban o no ambas condiciones. Pacientes y metodología: Estudio prospectivo en niños (3-14 años), remitidos a la «Unidad Multidisciplinar de Sueño» por sospecha de SAHS, entre el 1/11/2015 y el 1/08/2017. Se evaluaron los siguientes parámetros: antropometría, síntomas, tensión arterial, exploración otorrinolaringológica, polisomnografía (PSG nocturna) y estudio analítico. Resultados: Se valoraron 67 niños, 64% no obesos y 36% obesos.Se observó que los obesos tenían más edad (p

Introduction: Sleep apnoea-hypopnoea syndrome (SAHS) and childhood obesity are two high prevalence conditions that represent a public health challenge. Objective: To analyse the association between both and comparing child groups that had or did not have both conditions. Patients and methods: A prospective study in children (3–14 years), referred to the “Multidisciplinary Sleep Unit” due to suspected SAHS, between 1 November 2015 and 1 August 2017. The following parameters were evaluated: anthropometry, symptoms, blood pressure, ear, nose, and throat examination, polysomnography (nocturnal PSG) and laboratory tests. Results: A total of 67 children were evaluated (64% non-obese (NOb) and 36% obese (Ob). It was observed that the Ob were older (P

Resumen: El proyecto ATLANTIS es un estudio observacional, longitudinal y ambispectivo que intenta responder los interrogantes de la historia natural del síndrome de apneas-hipopneas durante el sueño (SAHS) a través de su evolución en una población clínica infantil. Para ello se incluyó en el estudio a los niños entre 0 y 14 años remitidos a la Unidad Multidisciplinar de Sueño de Burgos por sospecha clínica de SAHS (presencia de ronquido o pausas respiratorias) desde el año 2000 al 2010. El estudio se realiza en 2 fases: fase i: se analiza a todos los niños remitidos por sospecha clínica de SAHS a los que se realizó historia clínica y de sueño, exploración física y otorrinolaringológica y estudio de sueño (polisomnografía o poligrafía), identificándose 2 grupos: SAHS y no SAHS, que a su vez se diferencian en 2 subgrupos: tratamiento quirúrgico y no quirúrgico; en la fase ii: se realizarán prospectivamente la historia clínica y de sueño, la exploración física y otorrinolaringológica y el estudio de sueño a una muestra aleatoria de cada uno de los grupos obtenidos de la fase i. Los objetivos del estudio son: 1) describir y comparar las características clínicas y polisomnográficas de la población infantil con y sin SAHS e identificar las variables predictivas de SAHS infantil; 2) frecuencia del SAHS residual y sus factores predictores; 3) incidencia de SAHS en la población infantil y sus factores de riesgo; 4) frecuencia de remisión de SAHS y sus factores pronósticos, y 5) frecuencia de recidiva de SAHS y sus factores de riesgo. Abstract: The ATLANTIS project is an observational, longitudinal and ambispective study that seeks to answer questions about the natural history of obstructive sleep apnoea syndrome (OSAS) over its course in a clinical child population. To this end, children between 0 and 14 referred to Burgoś Multidisciplinary Sleep Unit due to clinical suspicion of OSAS (presence of snoring and / or respiratory pauses) from 2000 to 2010 were included in the study. The study is carried out in 2 phases, Phase I: All children referred with clinical suspicion of OSAS who underwent a clinical and sleep history, physical and otorhinolaryngological examination and sleep study (polysomnography or Respiratory Polygraphy) were analysed, identifying 2 groups: OSAS and NO OSAS in turn