Skip to main content

Table 2 Summary of the clinical MRI and SWE parameters for the 62 patients

From: Early assessment of shear wave elastography parameters foresees the response to neoadjuvant chemotherapy in patients with invasive breast cancer

Parameters Responder (n = 34) Non-responder (n = 28) p value
MRI volume (mm3)
VMRI1 104,589.2 ± 254,548.7 (24) 117,407.7 ± 164,022.0 (25) 0.17
VMRI2 24,458.6 ± 65,700.82 (16) 115,921.4 ± 131,323.6 (7) 0.09
VMRI3 16,939 ± 52,964.8 (14) 72,912.7 ± 123,127.2 (14) 0.04*
Mass size (mm)
s1 27.1 ± 13.7 (28) 34 ± 20.5 (28) 0.27
s2 16.5 ± 8.5 (32) 29.0 ± 16.5 (26) < 0.001*
s3 10.6 ± 6.6 (25) 24.3 ± 15.4 (24) < 0.001*
Mean elasticity (kPa)
Emean1 82.2 ± 38.0 (28) 92.1 ± 32.9 (28) 0.76
Emean2 38.5 ± 22.7 (32) 60.0 ± 30.3 (26) 0.01*
Emean3 29.5 ± 25.4 (25) 47.6 ± 33.3 (24) 0.03*
Maximum elasticity (kPa)
Emax1 163.1 ± 55.7 (28) 179.6 ± 38.6 (28) 0.50
Emax2 95.7 ± 51.1 (32) 134.9 ± 59.0 (26) 0.01*
Emax3 63.4 ± 49.8 (25) 114.3 ± 72.9 (24) 0.02*
Ratio of mean elasticity
Emean-ratio1 16.2 ± 14.8 (28) 26.0 ± 21.2 (28) 0.02*
Emean-ratio2 10.9 ± 10.2 (32) 16.8 ± 14.9 (26) 0.07
Emean-ratio3 5.3 ± 6.1 (25) 10.8 ± 9.8 (24) 0.02*
Ratio of maximum elasticity
Emax-ratio1 16.6 ± 14.0 (28) 22.2 ± 14.0 (28) 0.08
Emax-ratio2 14.3 ± 15.1 (32) 23.0 ± 31.8 (26) 0.22
Emax-ratio3 6.1 ± 5.5 (25) 15.6 ± 16.2 (24) 0.02*
Mass characteristic frequency (Hz)
fmass1 125.7 ± 71.2 (28) 119.1 ± 74.8 (28) 0.82
fmass2 135.3 ± 72.2 (32) 105.0 ± 79.2 (26) 0.05
fmass3 243.9 ± 156.3 (25) 102.2 ± 61.2 (24) < 0.001*
Change of elasticity (kPa)
Emean1–2 39.8 ± 35.9 (26) 31.3 ± 42.4 (26) 0.42
Emean1–3 50.9 ± 41.4 (19) 45.6 ± 43.1 (24) 0.46
Emax1–2 57.2 ± 60.8 (26) 48.5 ± 69.7 (26) 0.50
Emax1–3 102.7 ± 56.0 (19) 65.8 ± 77.3 (24) 0.09
Change of mass characteristic frequency (Hz)
fmass1–2 −8.9 ± 97.6 (26) 16.1 ± 86.3 (26) 0.90
fmass1–3 −88.4 ± 98.4 (19) 16.1 ± 55.4 (24) < 0.001*
  1. Data are mean ± standard deviation; data in parentheses are mass numbers
  2. Emean mean elasticity, Emax maximum elasticity, Emean_ratio ratio of the mean elasticity between the mass and the surrounding normal tissue, Emax_ratio ratio of the maximum elasticity between the mass and the surrounding normal tissue, fmass mass characteristic frequency
  3. The subscripts 1, 2, and 3 indicate the corresponding parameters measured at the first, the second, and the third visit, respectively
  4. *p < 0.05; the difference is statistically significant