Juan-juan FU, Dan-ying MA, Jin-lan TANG, Yi-lin BAO, Yuan ZHAO, Lin-wei SHANG, Jian-hua YIN. NIR Spectroscopic Study and Staging Diagnosis of Osteoarthritic Articular Cartilage[J]. Spectroscopy and Spectral Analysis, 2021, 41(9): 2770
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 9, 2770 (2021)
Fig. 1. The near-infrared average spectra of healthy and multi-stage OA tissues at SZ(a), TZ(b), DZ(c), respectively
Fig. 2. The absorbance ratios of the 4 610 to 4 898 cm-1 band (a), the complex to 4 898 cm-1 band (b), the complex to 4 610 cm-1 band (c) of healthy and multi-stage OA tissues at different depths (SZ, TZ, DZ), respectively
Fig. 3. The scatter plots of the first 3 principal factors on the SZ NIR spectra of healthy and OA tissues with preprocess of BC(a), 1st-2-21SG (b) and 2nd-3-25SG (c), respectively
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Table 1. Sample information of horizontal section of articular cartilage
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Table 2. Fisher discrimination of healthy and OA tissues with different pretreatment methods of NIR spectroscopy
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Table 3. PCA-FDA significant test results of NIR spectral data at SZ, TZ and DZ with preprocess of 1st-2-21SG
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Table 4. PCA-FDA of NIR spectral training and prediction sets of healthy and multi-stage OA cartilage (SZ, TZ, DZ)
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