A method for the comparison of multi-platform spectral histopathology (SHP) data sets

Area of Science:

• Spectroscopy and Imaging
• Materials Science
• Analytical Chemistry

Background:

• Infrared (IR) imaging is a powerful tool for material analysis.
• Standardization across different IR imaging instruments is crucial for data comparability.
• Variations in detector technology and pixel size can influence spectral data.

Purpose of the Study:

• To compare infrared imaging data sets acquired on diverse instruments.
• To develop and validate methods for inter-instrument data comparison.
• To assess the reproducibility and comparability of spectral and intensity data.

Main Methods:

• Acquisition of infrared imaging data using multiple instrument platforms.
• Development of data processing techniques for cross-platform analysis.
• Comparative analysis of spectral signatures and absolute reflectance intensity values.

Main Results:

• Highly similar and reproducible spectral results were obtained across different instrument platforms.
• Despite variations in detector technology and pixel size, spectral profiles remained consistent.
• Absolute intensity values of reflectance data showed differences attributed to sample substrate heterogeneity (reflectivity and planarity).

Conclusions:

• Infrared imaging instruments, regardless of detector technology or pixel size, provide comparable spectral information.
• Sample substrate characteristics are a significant factor influencing absolute reflectance intensity measurements.
• Standardized data acquisition and processing methods are essential for robust inter-instrument comparisons in IR imaging.