Figure 3
From: Accessing depth-resolved high spatial frequency content from the optical coherence tomography signal
Conventional SDOCT, nsOCT imaging and histological analysis of day 21 chondrogenic and undifferentiated MSC pellets from three biological replicates. (a) The dominant axial spatial period profiles (nm) versus depth (µm) of day 21 positive cell pellets and negative controls from three donors. (b) Conventional SDOCT, (c) nsOCT enface images and (d) Histological analysis and toluidine blue staining of MSC pellets for Donor 1 negative (i) and positive (ii) samples at depth 90 μm, Donor 2 negative (iii) and positive (iv) samples at depth 170 μm and Donor 3 negative (v) and positive (vi) samples at depth 60 μm. The color bar presents the dominant spatial period of the structure Hz in nm. The scale bar is 0.1 mm for OCT and nsOCT images, and = 50 µm for histological images.
