Daniel Lorias Espinoza

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PURPOSE This study was aimed to establish the construct validity of a video-tracking system based on orthogonal cameras approach for assessment of laparoscopic psychomotor skills in training environments. METHODS The camera-tracking system consists of two webcams placed in orthogonal configuration at a distance of 13.5 cm. The orthogonal cameras employ a(More)
BACKGROUND Well-developed psychomotor skills are important for competence in minimally invasive surgery. Neuroendoscopy is no exception, and adaptation to different visual perspectives and careful handling of the surgical instruments are mandatory. Few training systems, however, focus on developing psychomotor skills for neuroendoscopy. Here, we introduce a(More)
Electrical I mpedance Tomography (EIT) i s a non-invasive i maging technique which consists on placing a number of electrodes (normally 8, 16 or 32) e quidistantly a round the pe riphery of t he object t o be s tudied. O ne of t he preferred m ethods f or o btaining a pr ojection f or i mage r econstruction us es an alternating current signal injected(More)
The authors present the use of Wavelet Transform, using a quadratic spline function, and Probabilistic Neural Network (PNN) to classify 8 heartbeat conditions. The process consists of four mains stages. The first part consists of pre-processing a nd f iltering selected ECG l ead II (D II) data re gisters f rom t he PhysioNet repository. The filtered signal(More)
This article presents the first clinical and experimental experiences of the PMASS (Postural Mechatronic Assistance Solo Surgery) from a prospective study carried on on thirteen laparoscopic procedures. Also, their advantages and disadvantages are identified. The PMASS is a system with three articulations; two articulations are passive and one is active;(More)
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