Do High Frequency Ultrasound Images Support Clinical Skin Assessment?

Table 2

Categories for the classification of high frequency ultrasound images [4].

Category	Description
0	Normal scan—no sign of PU development
Subgroup 1	Pockets of subcutaneous oedema
Subgroup 2	Strips of dermal damage and increased subcutaneous damage
Subgroup 3	Subepidermal inflammation, strips of dermal damage, and major subcutaneous damage
Ungraded	Unable to assess due to poor image quality