. Author manuscript; available in PMC: 2018 Dec 1.

Published in final edited form as: J Magn Reson Imaging. 2017 Apr 3;46(6):1748–1759. doi: 10.1002/jmri.25712

Table 3.

Summary of MR imaging metrics with significant differences and metrics approaching significant differences in DCIS nuclear grades between non-high nuclear grade (non-HNG; low, low-to-intermediate, and intermediate) and high nuclear grade (HNG; intermediate-to-high and high) groups and between low nuclear grade (LNG; low and low-to-intermediate) and HNG groups.

	Mean value ± standard deviation			Mean value ± standard deviation
Metrics	Non-HNG	HNG	p value	LNG	HNG	p value
Minimum intensity
1^st Post	236.5±258.9	323.3±278.9	0.169	186.1±223.2	323.3±278.9	0.088
Sub 1^st Post	47.2±102.4	59.3±101.9	0.140	31.0±82.5	59.3±101.9	0.056
Skewness
Sub 4^th Post	0.950±0.520	0.817±0.318	0.269	1.092±0.527	0.817±0.318	0.084
Kurtosis
Sub 4^th Post	0.792±1.388	0.275±0.783	0.221	1.129±1.547	0.275±0.783	0.084
Surface : Volume ratio
Pre	2.483±0.606	2.100±0.613	0.027	2.510±0.596	2.100±0.613	0.042
1^st Post	2.482±0.607	2.098±0.614	0.026	2.509±0.598	2.098±0.614	0.040
4^th Post	2.481±0.607	2.098±0.614	0.026	2.508±0.598	2.098±0.614	0.040
Sub 1^st Post	2.643±0.780	2.183±0.608	0.032	2.748±0.848	2.183±0.608	0.037
Sub 4^th Post	2.526±0.670	2.168±0.587	0.060	2.585±0.703	2.168±0.587	0.064
Correlation
4^th Post	1.3E7±3.2E7	2.1E7±4.6E7	0.130	1.8E7±4.1E7	2.1E7±4.6E7	0.098
Low gray-level run emphasis (LGLRE)
Sub 4^th Post	0.024±0.016	0.019±0.017	0.085	0.025±0.017	0.019±0.017	0.075
Short run low gray-level run emphasis (SRLGLE)
Sub 4^th Post	0.019±0.014	0.014±0.013	0.098	0.021±0.015	0.014±0.014	0.071