Estudio preliminar: caracterización por ultrasonido de criogeles de PVA
DOI:
https://doi.org/10.17979/ja-cea.2026.47.13723Palabras clave:
PVA, propilenglicol, criogel, phantom, ultrasonido, velocidad del sonido, tejidos blandosResumen
Los materiales miméticos de tejido son herramientas fundamentales para la calibración, validación y entrenamiento en técnicas de ultrasonido, al permitir reproducir condiciones experimentales controladas y comparables con tejidos biológicos. En este trabajo se fabricaron criogeles de alcohol polivinílico (PVA) con distintas concentraciones de propilenglicol, incorporado como aditivo mediante sustitución parcial del agua desmineralizada, con el objetivo de ajustar su respuesta acústica. Las muestras se obtuvieron por gelificación física mediante ciclos de congelación-descongelación y fueron caracterizadas en inmersión, a 36,5 ºC, mediante transductores de ultrasonido. A partir del análisis de los tiempos de vuelo se determinó la velocidad longitudinal del sonido en cada formulación. Los resultados mostraron velocidades medias comprendidas entre 1578,5 y 1615,7 m/s tras el quinto ciclo, valores compatibles con los reportados para diversos tejidos blandos. Estos hallazgos constituyen resultados preliminares para la selección de formulaciones y orientan el desarrollo de nuevas composiciones de PVA-propilenglicol con propiedades acústicas ajustables para aplicaciones biomédicas basadas en ultrasonido.
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Derechos de autor 2026 Juan Sebatián Montenegro-Bravo, Alberto Rodríguez-Martínez , Juan David Romero-Ante, Miguel Ángel de la Casa-Lillo, Jose María Sabater-Navarro
Esta obra está bajo una licencia internacional Creative Commons Atribución-NoComercial-CompartirIgual 4.0.
