Han pasado 26 años desde la primera colecistectomía laparoscópica en México. Desde entonces, la laparoscopía se ha adoptado de forma variable y se ha extendido a diferentes especialidades. Objetivo: Identificar el sitio que ocupan los abordajes laparoscópicos en México. Método: Se buscaron los códigos que tuvieran la palabra laparoscopia o laparoscópica en los registros del Sistema Automatizado de Egresos Hospitalarios en 2015. Con los datos obtenidos se realizó un estudio descriptivo y retrospectivo. Resultados: Se encontraron 55 procedimientos diferentes en un total de 30,174. De ellos, el 79.7% en mujeres y el 20.3% en hombres. La edad más común fue entre los 25 y 29 años. Los diez primeros fueron colecistectomía, apendicectomía, histerectomía total abdominal laparoscópica, procedimientos para creación de competencia esfinteriana esofagogástrica, salpingo-ooforectomía unilateral, colecistectomía parcial, escisión local o destrucción de ovario, plastia umbilical, apendicectomía incidental y ooforectomía unilateral (94.6% del total). Los Estados con el mayor número reportado fueron
This paper aims to implement a laser-induced ultrasound imaging reconstruction method based on the delay-and-sum beamforming through the synthetic aperture focusing technique (SAFT) for a circular scanning, performed with a tomograph that had one acoustic sensor and a system that rotates the sample around a fixed axis. The proposed method, called the Single-sensor Scanning Synthetic Aperture Focusing Technique, considers the size of the sensor and the detection procedure inside the SAFT's algebra. This image reconstruction method was evaluated numerically, using the Green function for the laser-induced ultrasound wave equation to generate a forward problem, and experimentally, using a solid object of polylactic acid, and a Sprague–Dawley rat heart located in a tissue-mimicking phantom. The resulting images were compared to those obtained from the time reversal and the conventional delay-and-sum reconstruction algorithms. The presented method removes the sidelobe artifacts and the comet tail sign, which produces a more distinguishable target on the image. In addition, the proposed method has a faster performance and lower computational load. The implementation of this method in photoacoustic microscopy techniques for image reconstruction is discussed.
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