Cortexa Technology DermaLab Mini Instructions For Use Manual page 17

Maintaining the same curvature, a second line – the right side of the grid (C) – may be freely posi-
tioned using the left/right arrows (D).
The grid becomes visible over the dimmed image by touching the Grid button.
The Arrows used when moving the grid are only visible when the grid is enabled, as both grid in-
tensity and grid distance is based on grid placement.
A
C
B
D
The measurement algorithm calculates the Distance between left and right side of the grid in mi-
crometers as well as the average Intensity (ultrasound reflection strength) inside the grid. This
may be used to quantify specific features within certain areas – e.g., in the upper or lower dermis.
Note 1: As a best estimate, the edge detection algorithm assumes identical curvatures for the skin
surface and the dermis/subcutis tissue interface. Consequently, the left and right side of the grid
are identically shaped.
Note 2: When pressing Sample, the software automatically detects the edge position of epidermis
and updates the left grid position accordingly. This way, it is possible to automate measurements,
so the intensity is always measured at the same offset distance relative to the epidermis and with
a constant width of the grid.
Note 3: The position of the grid relative to the epidermis is defined individually for each window.
Every time a new image is recorded or loaded from the memory the curvature of the grid is
aligned to the border between epidermis and dermis.
Note 4: The average intensity is updated even if the red grid is turned off.
Grid - Ultrasound image with superimposed grid.
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