X-ray technique for visualization of the bolus flow through an esophageal simulator

0541485 - ÚTAM 2022 RIV JP eng J - Journal Article
Ruiz-Huerta, L. - Palacios-Morales, C. - Caballero-Ruiz, A. - Vopálenský, Michal - Díaz, O. - Hernández-Angulo, J. A. - Brito-de la Fuente, E. - Ascanio, G.
X-ray technique for visualization of the bolus flow through an esophageal simulator.
Journal of Visualization. Roč. 24, č. 4 (2021), s. 761-769. ISSN 1343-8875. E-ISSN 1875-8975
Institutional support: RVO:68378297
Keywords : soft actuator * esophageal simulator * swallowing * flow visualization * X-ray computed tomography * biofluid mechanics * additive manufacturing application
OECD category: Radiology, nuclear medicine and medical imaging
Impact factor: 1.974, year: 2021
Method of publishing: Limited access
https://doi.org/10.1007/s12650-021-00743-5

In the last years, there has been an interest in development of simulators to reproduce the mechanical properties of the human digestive system. Particularly, there have been some approaches in the development of esophagus simulators. Such simulators intend to replicate the peristaltic wave conditions, but the reported experiments are related to indirect measurements in which the use of a fluid is not reported. In this work, an X-ray technique for visualizing the flow of bolus through an artificial esophageal simulator (AES) is proposed. The results revealed the appearance of secondary flows on the wave sides, which displace as the wave contracts. This was verified with the flow fields, in which it was observed that the bolus flows mainly along the central part of the wave and a small volume tends to retract. This confirms that the flow is extensional as the bolus is stretched and compressed during the peristalsis.
Permanent Link: http://hdl.handle.net/11104/0319038