The authors report a preliminary series assessing the feasibility of duodenal stenting using a surgical approach. The study included 16 patients with a malignant duodenal outlet obstruction for whom a biliaryobstruction necessitated a laparotomyor following an endoscopic stenting failure. The stent was efficient in 15 patients with a complete relieve of obstruction.
View Article and Find Full Text PDFThis paper presents a new approach for cardiac beat interpretation, based on a direct integration between a model and observed ECG signals. Physiological knowledge is represented by means of a semi-quantitative model of the cardiac electrical activity. The interpretation of cardiac beats is formalized as an optimization problem, by minimizing an error function defined between the model's output and the observations.
View Article and Find Full Text PDFMuch research effort has been directed in different physiological contexts towards describing realistic behaviors with differential equations. One observes obviously that more state-variables give the model more accuracy. Unfortunately, the computational cost involved is higher.
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