Differentiation using minimally-invasive bioimpedance measurements of healthy and pathological lung tissue through bronchoscopy
Company-Se, Georgina (Universitat Politècnica de Catalunya)
Nescolarde, Lexa (Universitat Politècnica de Catalunya)
Pajares Ruiz, Virginia (Institut d'Investigació Biomèdica Sant Pau)
Torrego, Alfons (Institut d'Investigació Biomèdica Sant Pau)
Riu, Pere J. (Universitat Politècnica de Catalunya)
Rosell, Javier (Universitat Politècnica de Catalunya)
Bragós, Ramon (Universitat Politècnica de Catalunya)
Universitat Autònoma de Barcelona

Fecha:	2023
Resumen:	To use minimally-invasive transcatheter electrical impedance spectroscopy measurements for tissue differentiation among healthy lung tissue and pathologic lung tissue from patients with different respiratory diseases (neoplasm, fibrosis, pneumonia and emphysema) to complement the diagnosis at real time during bronchoscopic procedures. Multi-frequency bioimpedance measurements were performed in 102 patients. The two most discriminative frequencies for impedance modulus (|Z|), phase angle (PA), resistance (R) and reactance (Xc) were selected based on the maximum mean pair-wise Euclidean distances between paired groups. One-way ANOVA for parametric variables and Kruskal-Wallis for non-parametric data tests have been performed with post-hoc tests. Discriminant analysis has also been performed to find a linear combination of features to separate among tissue groups. We found statistically significant differences for all the parameters between: neoplasm and pneumonia (p < 0. 05); neoplasm and healthy lung tissue (p < 0. 001); neoplasm and emphysema (p < 0. 001); fibrosis and healthy lung tissue (p ≤ 0. 001) and pneumonia and healthy lung tissue (p < 0. 01). For fibrosis and emphysema (p < 0. 05) only in |Z|, R and Xc; and between pneumonia and emphysema (p < 0. 05) only in |Z| and R. No statistically significant differences (p > 0. 05) are found between neoplasm and fibrosis; fibrosis and pneumonia; and between healthy lung tissue and emphysema. The application of minimally-invasive electrical impedance spectroscopy measurements in lung tissue have proven to be useful for tissue differentiation between those pathologies that leads increased tissue and inflammatory cells and those ones that contain more air and destruction of alveolar septa, which could help clinicians to improve diagnosis.
Ayudas:	Agencia Estatal de Investigación PID2021-128602OB-C21
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	Biopsy ; Bronchoscopy ; Lung tissue differentiation ; Minimally-invasive bioimpedance ; Respiratory disease
Publicado en:	Frontiers in Medicine, Vol. 10 (2023) , p. 1108237, ISSN 2296-858X

DOI: 10.3389/fmed.2023.1108237
PMID: 37113605

9 p, 887.4 KB

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