Publications [#357811] of Michael E. Gehm

Papers Published

1. McCain, ST; Gehm, ME; Wang, Y; Pitsianis, NP; Brady, DJ, Multimodal multiplex Raman spectroscopy optimized for in vivo chemometrics, Progress in Biomedical Optics and Imaging - Proceedings of SPIE, vol. 6093 (June, 2006) [doi]
   (last updated on 2024/12/31)

   Abstract:
   We have designed and constructed a multimodal multiplex Raman spectrometer which uses multi-wavelength excitation to better detect signals in the presence of fluorescence by taking advantage of the shift-variance of the Raman signal with respect to excitation frequency. Coupled with partial-least-squares (PLS) regression, the technique applied to ethanol estimation in a tissue phantom achieves root-mean-squared-cross-validation errors (RMSCVE) of 9.2 mmol/L with a model formed with 2 principal components, compared to a single wavelength data set with equivalent energy where 7 principal components were used to achieve an RMSCVE of 39.1 mmol/L.