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71.
Stefano Morlacchi Sebastian George Colleoni Rubén Cárdenes Claudio Chiastra Jose Luis Diez Ignacio Larrabide Francesco Migliavacca 《Medical engineering & physics》2013,35(9):1272-1281
Computational simulations of stenting procedures in idealized geometries can only provide general guidelines and their use in the patient-specific planning of percutaneous treatments is inadequate. Conversely, image-based patient-specific tools that are able to realistically simulate different interventional options might facilitate clinical decision-making and provide useful insights on the treatment for each individual patient.The aim of this work is the implementation of a patient-specific model that uses image-based reconstructions of coronary bifurcations and is able to replicate real stenting procedures following clinical indications. Two clinical cases are investigated focusing the attention on the open problems of coronary bifurcations and their main treatment, the provisional side branch approach. Image-based reconstructions are created combining the information from conventional coronary angiography and computed tomography angiography while structural finite element models are implemented to replicate the real procedure performed in the patients.First, numerical results show the biomechanical influence of stents deployment in the coronary bifurcations during and after the procedures. In particular, the straightening of the arterial wall and the influence of two overlapping stents on stress fields are investigated here. Results show that a sensible decrease of the vessel tortuosity occurs after stent implantation and that overlapping devices result in an increased stress state of both the artery and the stents. Lastly, the comparison between numerical and image-based post-stenting configurations proved the reliability of such models while replicating stent deployment in coronary arteries. 相似文献
72.
Pascal Büttner Dirk Dhler Sofia Korenko Sebastian Mhrlein Sebastian Bochmann Nicolas Vogel Ignacio Mínguez-Bacho Julien Bachmann 《RSC advances》2020,10(47):28225
TiO2 nanotubes generated by anodization of metallic titanium sputter-coated on indium tin oxide (ITO) substrates are used as a conductive scaffold for all solid-state Sb2S3-sensitized extremely thin absorber (ETA) solar cells. A blocking layer of TiO2 placed between Ti and ITO in combination with optimized Ti deposition and anodization conditions enables the formation of crack-free layers of straight, cylindrical TiO2 nanotubes of tunable length and diameter. ALD (atomic layer deposition) is subsequently used to coat this substrate conformally with a highly pure Sb2S3 light absorber layer under an inert atmosphere. The high absorption coefficient of Sb2S3 as compared to molecular dyes allows for the utilization of very short nanotubes, which facilitates the infiltration of the organic hole transport material and formation of a p–i–n heterojunction in an interdigitated and tunable geometry. We investigate the influence of nanotube length and of the absorber thickness to enhance the photocurrent value to twice that of planar reference structures.TiO2 nanotubes generated by anodization of metallic titanium sputter-coated on indium tin oxide (ITO) substrates are used as a conductive scaffold for all-solid-state Sb2S3-sensitized extremely thin absorber (ETA) solar cells. 相似文献
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Casanova Barea Javier De la Gala Francisco Piñeiro Patricia Reyes Almudena Simón Carlos Rancan Lisa Vara Elena Paredes Sergio Bellón Jose María Garutti Martinez Ignacio 《Journal of clinical monitoring and computing》2021,35(5):1183-1192
Journal of Clinical Monitoring and Computing - Lung resection surgery (LRS) causes an intense local and systemic inflammatory response. There is a relationship between inflammation and... 相似文献
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Juan-Carlos de Vicente Tania Rodríguez-Santamarta Ignacio Pe?a Lucas Villalaín álvaro Fernández-Valle Manuel González-García 《Medicina oral, patología oral y cirugía bucal》2015,20(5):e547-e553