Table 4.

Qualitative assessment of echogenicity of brainstem raphe, red nucleus, thalamus, caudate and lenticular nuclei in NCD and IPD group

Structure	NCD group (n = 201)		IPD group (n = 183)
Brainstem raphe	grade 1:n = 23 grade 2:n = 176		grade 1:n = 30 grade 2:n = 130
	right	left	right	left
Red nucleus	grade 1:n = 44 grade 2:n = 150	grade 1:n = 44 grade 2:n = 154	grade 1:n = 47 grade 2:n = 113	grade 1:n = 49 grade 2:n = 109
Thalamus	grade 1:n = 198 grade 2,3:n = 0	grade 1:n = 198 grade 2,3:n = 0	grade 1:n = 157 grade 2,3:n = 0	grade 1:n = 156 grade 2:n = 1 grade 3:n = 0
Lenticular nucleus	grade 1:n = 194 grade 2:n = 3	grade 1:n = 194 grade 2:n = 4	grade 1:n = 155 grade 2:n = 13 grade 3:n = 1	grade 1:n = 150 grade 2:n = 19 grade 3:n = 3
Caudate nucleus	grade 1:n = 197 grade 2,3:n = 1	grade 1:n = 196 grade 2:n = 2 grade 3:n = 0	grade 1:n = 162 grade 2:n = 3 grade 3:n = 2	grade 1:n = 166 grade 2:n = 4 grade 3:n = 0

Mann-Whitney-U-Test showed no significance between NCD and IPD group for echogenicity of all structures. Structure echogenicity was classified: Raphe: markedly echogenic (2); interrupted or not visible (1). Red nucleus: weakly echogenic (1), markedly echogenic (2), hyperechogenic (3). Thalamus, caudate and lenticular nucleus: iso- or hypoechogenic (1), hyperechogenic (2), markedly hyperechogenic (3).