目的从影像学角度，结合临床表现探讨双侧对称性灰质核团病变的病因，提高诊断水平。
Objective: to discuss the causes of symmetric lesions of subcortical gray matter nuclei with clinical manifestation from neuroimaging study, and to improve the diagnosis ability.
结果：灰质核团t2弛豫时间随脑铁含量增加而缩短，脑白质t 2弛豫时间无变化趋势。
Results: T2 relaxation time of gray matter nucleus was shorten because of iron content increasing, and that of white matter had not this change.
内侧径路经间脑室周、中脑中央灰质、第四脑室底、孤束核—迷走背核复合体、延髓与脊髓中央管周下行。
The other bundle from PVN, the medial, descends through diencephalic periventricular gray, periaqueductal gray, floor of ventricle IV, SVC and medullary-spinal central gray.
目的研究雏鸡投射向圆核的视顶盖中央灰质层（SGC）细胞的形态学特征。
Objective To study the morphological characteristics of tectal cells in stratum griseum centrale(SGC) which project to nucleus rotundus(Rt) in chick.
投向脊髓灰质的后索核纤维主要发自核中间腹侧部的大、中型三角、多角和梭形细胞。
The projections of the DFN to the spinal cord originate mainly from large and medium sized cells in the intermediate ventral part in DFN.
本研究将WGA—HRP注入25只大鼠脊髓灰质内，顺行追踪脊髓至外侧网状核的纤维投射。
The spinal projection to the lateral reticular nucleus (LRN) was examined in 25 rats by the method of anterograde transport of Wheat Germ Agglutinin-Horseradish Peroxidase (WGA-HRP).
在中脑分布于中脑中央灰质、前丘、后丘、脚间核和中缝核；
In the mesencephalon, OXB-IR fibers were located in the central gray substance, superior and inferior colliculi, interpeduncular nucleus and raphe nuclei.
此前已有研究表明，在杏仁核灰质数量和现实世界的社会网络的规模和复杂性之间有联系。
Previous research has shown a link between the volume of grey matter in the amygdala and the size and complexity of real world social networks.
同时，杏仁核也通过与导水管周围灰质、延髓头端腹内侧区及其它脑干核团的纤维联系参与镇痛过程。
On the other hand, amygdala may also be involved in pain modulation through connections with periaquiductal gray (PAG), rostral ventromedial medulla (RVM), and other brain stem areas.
虽然其他的灰质结构也可以被累及，但是壳核的异常改变是最具有特征性的影像表现(T2高信号、T 1低信号)。
Changes in the putamen are most characteristic on imaging (increased T2 signal and decreased T1 signal) although other gray matter structures may also be involved.
虽然其他的灰质结构也可以被累及，但是壳核的异常改变是最具有特征性的影像表现(T2高信号、T 1低信号)。
Changes in the putamen are most characteristic on imaging (increased T2 signal and decreased T1 signal) although other gray matter structures may also be involved.
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