Abstract

The analysis of cell types and disease using Fourier transform infrared (FT-IR) spectroscopic imaging is promising. The approach lacks an appreciation of the limits of performance for the technology, however, which limits both researcher efforts in improving the approach and acceptance by practitioners. One factor limiting performance is the variance in data arising from biological diversity, measurement noise or from other sources. Here we identify the sources of variation by first employing a high throughout sampling platform of tissue microarrays (TMAs) to record a sufficiently large and diverse set data. Next, a comprehensive set of analysis of variance (ANOVA) models is employed to analyze the data. Estimating the portions of explained variation, we quantify the primary sources of variation, find the most discriminating spectral metrics, and recognize the aspects of the technology to improve. The study provides a framework for the development of protocols for clinical translation and provides guidelines to design statistically valid studies in the spectroscopic analysis of tissue.

Original languageEnglish (US)
Pages (from-to)1063-1069
Number of pages7
JournalAnalytical chemistry
Volume84
Issue number2
DOIs
StatePublished - Jan 17 2012

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Analysis of variance (ANOVA)
Tissue
Imaging techniques
Spectroscopic analysis
Biodiversity
Microarrays
Fourier transforms
Sampling
Infrared radiation

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Analysis of variance in spectroscopic imaging data from human tissues. / Kwak, Jin Tae; Reddy, Rohith; Sinha, Saurabh; Bhargava, Rohit.

In: Analytical chemistry, Vol. 84, No. 2, 17.01.2012, p. 1063-1069.

Research output: Contribution to journalArticle

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