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. 2021 Feb 26;11(3):401. doi: 10.3390/diagnostics11030401

Table 2.

Conversion of vertical artifacts depending on the set ultrasound frequency.

Conversion of Vertical Artifacts with the Change of the Frequency from 2 MHz to 6 MHz Pulmonary Edema (n = 250) Pulmonary Fibrosis (n = 394) p
B to B and Z 41 (16%) 41(10%) <10−6
B to Z 18 (7%) 193 (49%)
B to non-verticals (A) 0 1 (<1%)
B and Z to Z 0 3 (<1%)
A to B 1 (<1%) 0
Z to non-verticals (A) 0 2 (<1%)
No change 190 (76%) 154 (39%)