Table 2.
Comparison of benign and malignant elasticity measurements (mean ± standard deviation) at longitudinal, transverse and combination of views.
| L | (N=130) | T | (N=126) | L∩T | (N=122) | L∪T | (N=134) | ||
|---|---|---|---|---|---|---|---|---|---|
| Emean±SD (kPa) | Benign | 33.09±22.28 | (108) | 25.41±16.37 | (109) | 28.92±17.48 | (105) | 29.53±17.89 | (112) |
| Malignant | 72.64±21.81 | (22) | 57.94±17.22 | (17) | 64.26±16.04 | (17) | 67.76±19.21 | (22) | |
| p-value | <0.0001* | <0.0001* | <0.0001* | <0.0001* | |||||
|
| |||||||||
| Emax±SD (kPa) | Benign | 66.87±44.37 | (108) | 56.01±41.38 | (109) | 60.23±37.42 | (105) | 62.53±40.57 | (112) |
| Malignant | 161.29±42.08 | (22) | 139.05±52.68 | (17) | 147.12±39.52 | (17) | 155.05±39.75 | (22) | |
| p-value | <0.0001* | <0.0001* | <0.0001* | <0.0001* | |||||
N indicates statistical frequency; Emean, mean elasticity; Emax, maximum elasticity; L, Longitudinal; T, Transverse; L∩T, group of nodules with transverse and longitudinal measurements; L∪T, group of nodules with transverse and/or longitudinal measurements.
*
p<0.05