Biomedical Engineering Reference
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(B)
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Figure 11.4
Space and time representation of a single line of speckle values. The horizontal axis spans the
pixels of the image, while the vertical axis is time. The pixel intensities vary randomly with time.
The data in (A) are from a fixed depth. The data in (B) are for a punctuated flythrough in which
40 frames are acquired at a fixed depth, then the coherence gate is moved deeper and 40 frames
are acquired again, and the process is repeated.
Figure 11.5
Motility contrast images of a multicellular tumor spheroid. NSD maps are shown at selected
depths. The color scale is set to show highly variable pixels with red and less variable pixels with
blue. The healthy shell surrounding the hypoxic or necrotic core appears in high contrast. (For
interpretation of the references to color in this figure legend, the reader is referred to the web
version of this topic.)
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