Thyroid nodule recognition in computed tomography using first order statistics

Table 3 The comparison of six features between nodule and normal thyroid tissue after normalization(mean ± SD)

Feature	Nodule	Normal	P value	F value
Entropy	0.828 ± 0.203	0.963 ± 0.020	<0.001	105.910
Uniformity	0.088 ± 0.175	0.007 ± 0.005	<0.001	76.834
Mean intensity	0.209 ± 0.098	0.257 ± 0.040	0.037	4.374
Standard deviation	0.677 ± 0.123	0.439 ± 0.218	0.001	11.286
Kurtosis	0.365 ± 0.102	0.317 ± 0.878	0.104	2.656
Skewness	0.547 ± 0.083	0.489 ± 0.052	0.002	10.190

The mean intensities of two groups without normalization are: 89.491 ± 17.295 HU, nodule: 68.851 ± 42.019 HU, P value <0.05

ISSN: 1475-925X