Infrared and Raman Spectroscopy and Imaging of Breast Cancer - Vibrational Spectroscopy for Tissue Analysis - page 149

× 10 -4

2

0

-2

-4

-6

1000 1500 2000

Wavenumber

Figure 5.39
GIII: second-derivative spectra for clusters 1 and 3, bands at ~1000 and ~1200 cm −1 .

× 10 -4 × 10 -5

5

1

0

0

-1

-5

-3 -2 -1

× 10 -4

-1 0 1

× 10 -4

T2

Figure 5.40
GII: clustering for T1 and T2 and T2 and T3.

30

0.15

3

1

20

0.1

2

10

0.05

0

0 10 20 30 1000 1500 2000

x Wavenumber

Figure 5.41 (See colour insert.)
GII: spatial coordinates of points in three clusters.