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下丘脑核团的全脑MRI与断层解剖对比
Comparison between brain magnetic resonance imaging and sectional anatomy of hypothalamic nuclei
目的 通过同例成人头颅标本磁共振成像与断层解剖图像的比较，明确全脑磁共振影像中下丘脑核团的形态、位置及信号特点。方法
选取6例成人头颅标本,分别行磁共振检查及断层标本制作，其中水平面、矢状面及冠状面各2例，对比观察同例标本下丘脑结构的影像解剖与断
层解剖特点。结果 穹隆及前连合在T1WI及T2WI中均显示为结构清晰的低信号结构，以T1WI为佳。通过穹隆及前连合等标志性结构定位，室旁核
在T1WI中呈等信号，边界清晰，在T2WI中呈等信号，边界清晰；乳头体核在T1WI中呈等信号，边界清晰，在T2WI中呈混杂信号，边界结构显示不
清；视上核在T1WI中呈等信号，与周围核团分界欠清，T2WI图像上显示为与周围灰质相同的等信号区。结论 磁共振临床常规头颅扫描序列可发
现下丘脑区部分核团。
Objective To explore the morphology, location and signal of the hypothalamic nuclei in the whole brain magnetic
resonance imaging by comparing between magnetic resonance imaging（MRI）and sectional anatomy images of the same specimen of
the human adult brain. Methods Six human adult cadaveric heads were examined using MRI and sectional anatomy methods. They
were sectioned at horizontal, sagittal and coronal plane，two for each. The collected images from MRI and physical sections
of the same brain were prepared. Results In T1 and T2 images, fornix and anterior commissure showed a sharp structure with
hypo-signals,of which T1 images were even better. By a landmark such as the fornix or anterior commissure, the paraventricular
nucleus in the T1 image showed sharp hypersignals, and slightly sharp hypersignals in T2 images. The mammillary nucleus showed
a slightly sharp hypersignals in T1 images, and the mixed signals in the T2 images and the boundary was unclear. The supraoptic
nucleus in the T1 image was less clear in boundaries with slightly hypersignals，in T2 images, it was poorly showed. Conclusion
Hypothalamic nuclei can be identified in the routine MRI head scan.
下丘脑 / 室旁核 / 乳头体核 / 视上核 / 磁共振成像 / 断层解剖 / 成人
Hypothalamus / Paraventricular nucleus / Mammillary body nucleus / Supraoptic nucleus / Magnetic resonance imaging / Sectional anatomy / Adult
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