Validation of noninvasive remote dielectric sensing system to quantify lung fluid levels

Authors

Teruhiko Imamura, Second Department of Internal Medicine, University of Toyama, Toyama 9300194, Japan.
Wataru Gonoi, Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo 1138654, Japan.
Masakazu Hori, Second Department of Internal Medicine, University of Toyama, Toyama 9300194, Japan.
Yohei Ueno, Second Department of Internal Medicine, University of Toyama, Toyama 9300194, Japan.
Nikhil Narang, Advocate Aurora HealthFollow
Hiroshi Onoda, Second Department of Internal Medicine, University of Toyama, Toyama 9300194, Japan.
Shuhei Tanaka, Second Department of Internal Medicine, University of Toyama, Toyama 9300194, Japan.
Makiko Nakamura, Second Department of Internal Medicine, University of Toyama, Toyama 9300194, Japan.
Naoya Kataoka, Second Department of Internal Medicine, University of Toyama, Toyama 9300194, Japan.
Ryuichi Ushijima, Second Department of Internal Medicine, University of Toyama, Toyama 9300194, Japan.
Mitsuo Sobajima, Second Department of Internal Medicine, University of Toyama, Toyama 9300194, Japan.
Nobuyuki Fukuda, Second Department of Internal Medicine, University of Toyama, Toyama 9300194, Japan.
Hiroshi Ueno, Second Department of Internal Medicine, University of Toyama, Toyama 9300194, Japan.
Koichiro Kinugawa, Second Department of Internal Medicine, University of Toyama, Toyama 9300194, Japan.

Recommended Citation

Imamura T, Gonoi W, Hori M, et al. Validation of Noninvasive Remote Dielectric Sensing System to Quantify Lung Fluid Levels. J Clin Med. 2021;11(1):164. Published 2021 Dec 29. doi:10.3390/jcm11010164

Affiliations

Advocate Christ Medical Center

Abstract

Background: The accuracy of the remote dielectric sensing (ReDS^TM) system, which is a noninvasive electromagnetic-based technology to quantify lung fluid levels, particularly among those with small body size, remains uncertain.

Methods: Hospitalized patients with and without heart failure underwent assessment of lung fluid levels with ReDS and successive chest computed tomography imaging. We performed a correlation analysis of the ReDS measurement, representing lung fluid levels, and computed tomography-derived high attenuation area percentage, which also provides a spatial quantification of lung fluid level.

Results: A total of 46 patients (median 76 years old, 28 men), including 28 patients with heart failure, were included. The median ReDS value was 28% (interquartile: 23%, 33%), and the median percentage of high attenuation area was 21.6% (14.4%, 28.5%). ReDS values and percentage of high attenuation area were moderately correlated (r = 0.65, p < 0.001), irrespective of the existence of heart failure. ReDS value independently predicted the percentage of high attenuation area seen on computed tomography (p < 0.001).

Conclusions: The ReDS system may be a promising, noninvasive tool to quantify fluid lung levels, as validated by comparison with chest computed tomography imaging. Further studies are warranted to validate the utility and applicability of this technology to a variety of clinical scenarios.

Document Type

Article

PubMed ID

35011905