LUO Shu-wen, CHEN Chang-shui, CHEN Wei-dong. Early Diagnosis of Colon Cancer Using Raman Spectroscopy and Multivariate Statistical Analysis Techniques[J]. Chinese Journal of Luminescence, 2013,34(11): 1544-1549
LUO Shu-wen, CHEN Chang-shui, CHEN Wei-dong. Early Diagnosis of Colon Cancer Using Raman Spectroscopy and Multivariate Statistical Analysis Techniques[J]. Chinese Journal of Luminescence, 2013,34(11): 1544-1549 DOI: 10.3788/fgxb20133411.1544.
Early Diagnosis of Colon Cancer Using Raman Spectroscopy and Multivariate Statistical Analysis Techniques
near-infrared (NIR) Raman spectra from 60 cases of
ex vivo
normal
adenomatous polyp and adenocarcinoma colon tissues were obtained. To find the embodiment of the regularity of pathological development of colon cancer on Raman spectral characteristic
we analyzed and compared the Raman spectral properties of the three tissue types
and researched the regularity of spectra-related changes. The results show that significant differences in Raman spectra were observed among the three tissue types at around 830
855
1 032
1 210
1 323
1 335
1 445
1 450 and 1 655 cm
-1
. Overall
the spectra of adenomatous polyp was in the middle of the spectra of normal and adenocarcinoma colon tissues
which might illustrate that adenomatous polyp was in the transitional state. Principal component analysis (PCA) and linear discriminant analysis (LDA) were employed to develop diagnostic algorithms for classifying the Raman spectra of different types of colon tissues. Based on the gold standards of histopathologic diagnosis
sensitivities of 96.9%
85.7% and 97.3%
and specificities of 82.8%
90%
and 92.3%
respectively were achieved by using PCA-LDA algorithms to discriminate the normal
adenomatous polyp and adenocarcinoma colon tissues. Therefore
near-infrared Raman spectroscopy can not only be utilized to differentiate colon cancer tissues from normal tissues
but also be used for discriminating colon premalignant lesions in molecular level. It is a potential effective method for early diagnosis of colon cancer.
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references
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