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Title: A low-cost, point-of-care test for confirmation of nasogastric tube placement via magnetic field tracking
Authors: Miyasaka, Muneaki
Li, Hao
Tay, Kon Voi
Phee, Soo Jay
Keywords: Engineering::Mechanical engineering
Issue Date: 2021
Source: Miyasaka, M., Li, H., Tay, K. V. & Phee, S. J. (2021). A low-cost, point-of-care test for confirmation of nasogastric tube placement via magnetic field tracking. Sensors, 21(13), 4491-.
Project: M4081419
Journal: Sensors
Abstract: In this work, we aim to achieve low-cost real-time tracking for nasogastric tube (NGT) insertion by using a tracking method based on two magnetic sensors. Currently, some electromagnetic (EM) tracking systems used to detect the misinsertion of the NGT are commercially available. While the EM tracking systems can be advantageous over the other conventional methods to confirm the NGT position, their high costs are a factor hindering such systems from wider acceptance in the clinical community. In our approach, a pair of magnetic sensors are used to estimate the location of a permanent magnet embedded at the tip of the NGT. As the cost of the magnet and magnetic sensors is low, the total cost of the system can be less than one-tenth of that of the EM tracking systems. The experimental results exhibited that tracking can be achieved with a root mean square error (RMSE) of 2-5 mm and indicated a great potential for use as a point-of-care test for NGT insertion, to avoid misplacement into the lung and ensure correct placement in the stomach.
ISSN: 1424-8220
DOI: 10.3390/s21134491
Rights: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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