Keywords:
Tissue characterisation, Diagnostic procedure, Ultrasound, Breast, Soft tissues / Skin, Ultrasound physics
Authors:
S. Sanabria, K. Martini, M. Rominger, K. Dedes, D. Vorburger, T. Frauenfelder, O. Goksel; Zurich/CH
DOI:
10.1594/ecr2018/C-1388
Results
All lesions were measurable with B-mode and speed of sound (SoS).
SoS-US tumors were examined in <2 minutes; 10/10 measurements were successful.
Average lesion size visible in B-mode was 2.0 cm (SD: 0.7 cm).
Malignant lesions showed an average SoS increase of 3.0% (SD: 0.2%) with respect to the background glandular tissue,
while benign lesions showed a SoS increase of 0.8% (SD: 0.1%) (Fig.
3).
SoS ultrasound correctly classified all lesions with a cut-off value of 2.3%.
However,
both strain ratios (SR) and shear wave velocity (SWV) failed to differentiate FA from IDC (Fig.
4).
SWV correlates with breast compression (R2>0.5) while SoS-US does not show a significant correlation (R2<0.2) (Fig.
5).
Breast compression range was 60 to 25 mm.
The average SoS value was 1465 m/s (SD 7 m/s) and the average SWS value 2.5 m/s (SD 0.2 m/s).