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. Author manuscript; available in PMC: 2017 Oct 1.
Published in final edited form as: Anesthesiology. 2016 Oct;125(4):793–804. doi: 10.1097/ALN.0000000000001249

Figure 1.

Figure 1

For each tissue type, a mean spectrum was calculated from ten of the 20 tissue spectra acquired from a 5 mm2 area. Some of the reflectance spectra from dissected tissues can clearly be differentiated from one another while the spectra from others have subtle or no differences. SL, supraspinous/intraspinous ligament.