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  Indian J Med Microbiol
 

Figure 3: Loupe image of metastatic lesions and photoacoustic imaging reconstructed into a plane with different wavelengths and ratio image. (a) Loupe image showing three metastatic nests in the lymph node. One was melanotic (black arrowhead), the others were amelanotic (open arrowheads). (b) The photoacoustic signal was effectively obtained from the site of melanin at 690nm. (c) The magnitude of the photoacoustic signal on photoacoustic imaging at 850 nm was weaker. (d) Ratio image showing the melanin site in yellow to blue. The signal intensity difference is smaller at sites in yellow, probably related to the higher density of melanin

Figure 3: Loupe image of metastatic lesions and photoacoustic imaging reconstructed into a plane with different wavelengths and ratio image. (a) Loupe image showing three metastatic nests in the lymph node. One was melanotic (black arrowhead), the others were amelanotic (open arrowheads). (b) The photoacoustic signal was effectively obtained from the site of melanin at 690nm. (c) The magnitude of the photoacoustic signal on photoacoustic imaging at 850 nm was weaker. (d) Ratio image showing the melanin site in yellow to blue. The signal intensity difference is smaller at sites in yellow, probably related to the higher density of melanin