Comparison of Dual Beam Dispersive and FTNIR Spectroscopy for Lactate Detection

• Published in: Sensors (Basel, Switzerland) Vol. 21; no. 5; p. 1891
• Main Authors: Baishya, Nystha, Mamouei, Mohammad, Budidha, Karthik, Qassem, Meha, Vadgama, Pankaj, Kyriacou, Panayiotis A
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 08.03.2021; MDPI
• Subjects: aquaphotomics; Biomarkers; Biomedical materials; Communication; Dispersion; dual beam dispersive NIR; FTNIR; Hemodynamics; lactate; Lactic Acid; Metabolism; Multivariate analysis; Near infrared radiation; near infrared spectroscopy; Prediction models; Sensors; Sheep; Signal to noise ratio; Spectra; Spectroscopy, Fourier Transform Infrared; Spectroscopy, Near-Infrared; Variables; United Kingdom > UK; United States > US; FTNIR; dual beam dispersive NIR; aquaphotomics; near infrared spectroscopy; lactate
• ISSN: 1424-8220; 1424-8220
• DOI: 10.3390/s21051891

Near Infrared (800-2500 nm) spectroscopy has been extensively used in biomedical applications, as it offers rapid, in vivo, bed-side monitoring of important haemodynamic parameters, which is especially important in critical care settings. However, the choice of NIR spectrometer needs to be investigated for biomedical applications, as both the dual beam dispersive spectrophotomer and the FTNIR spectrometer have their own advantages and disadvantages. In this study, predictive analysis of lactate concentrations in whole blood were undertaken using multivariate techniques on spectra obtained from the two spectrometer types simultaneously and results were compared. Results showed significant improvement in predicting analyte concentration when analysis was performed on full range spectral data. This is in comparison to analysis of limited spectral regions or lactate signature peaks, which yielded poorer prediction models. Furthermore, for the same region, FTNIR showed 10% better predictive capability than the dual beam dispersive NIR spectrometer.