Understanding The Ultrasound Image; Measurements - Cortexa Technology DermaLab Mini Instructions For Use Manual

6.4.6 Understanding the ultrasound image

By pressing Sample, an ultrasound image is recorded and visualized in the active window. In this
image, the colors represent the intensity (strength) of the reflected ultrasound signal. Dark color
represents low intensity and white (yellowish) represents a high intensity. The epidermis is highly
reflective (white/yellowish) and the dermis is a mix of many colors. The subcutaneous fat and
muscle fibers will return a low intensity signal (dark green and black). See below:
The Standard Probe ultrasound image – film plus epidermis to the left followed by dermis and subcutis.
The dermis is characterized by varying intensities (different colors), subcutis by low-intensity areas due to a

6.4.7 Measurements

The Ultrasound Standard probe screen features two sets of measurement data for each image.
One set is fully automatic and requires no operator input. It relates to the use of the Graph button.
The other relates to the Grid button. It is semi-automatic and may require operator input.
The measurements automatically update upon capturing a new or loading a previously stored im-
age.
Graph measurements (automatic) are based on the accumulated average of the total of 188 A-
scans, which forms the cross-sectional ultrasound image, to generate a so-called Super A-scan
(B).
As such, the Super A-scan is a graph showing the total average ultrasound intensity for all ultra-
sound responses in the image as a function of depth into the skin. It becomes visible as a super-
imposed red/yellow/green curve over the dimmed image by clicking the Show Graph button.
homogenous composition.
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