Department of Physical Therapy, Daegu University, Daegu, Republic of Korea.
AJNR Am J Neuroradiol. 2011 Dec;32(11):2116-9. doi: 10.3174/ajnr.A2660. Epub 2011 Sep 8.
Little is known about the detailed anatomic location and somatotopic arrangement at the CP. Using DTT with FSL tools, we conducted an investigation of the anatomic location and somatotopic arrangement of the CST at the CP in the human brain.
We recruited 43 healthy volunteers for this study. DTI was obtained by using 1.5T, and CSTs for the hand and leg were obtained by using the FSL tool. The somatotopic location of the CST was evaluated as the highest probabilistic location at the upper and lower midbrain. The posterior boundary was determined as the line between the interpeduncular fossa and the lateral sulcus; we then drew a rectangle on the basis of the boundary of the CP.
In the mediolateral direction, the highest probabilistic locations for the hand and leg were an average of 60.46% and 69.98% from the medial boundary at the upper midbrain level and 53.44% and 62.76% at the lower midbrain level, respectively. As for the anteroposterior direction, the highest probabilistic locations for the hand and leg were an average of 28.26% and 32.03% from the anterior boundary at the upper midbrain level and 30.19% and 33.59% at the lower midbrain level, respectively.
We found that the hand somatotopy for the CST is located at the middle portion of the CP and the leg somatotopy is located lateral to the hand somatotopy.
对于 CP 处 CST 的详细解剖位置和体感觉分布尚不清楚。本研究采用 DTT 联合 FSL 工具，旨在探讨人脑 CP 处 CST 的解剖位置和体感觉分布。
本研究共纳入 43 名健康志愿者。采用 1.5T 磁共振扫描仪进行弥散张量成像（DTI），使用 FSL 工具获取手和腿的 CST。通过 CST 在手和腿运动皮质的最高概率位置评估其体感觉位置，该位置位于中脑上、下水平的内侧边界外侧 60.46%和 69.98%，以及 53.44%和 62.76%。对于前后方向，手和腿的 CST 在中脑上、下水平的前边界外侧 28.26%和 32.03%，以及前边界内侧 30.19%和 33.59%。
在 CST 手和腿的体感觉分布中，手的体感位置位于 CP 的中间部分，而腿的体感位置位于手的体感位置外侧。
我们发现 CST 的手体感区位于 CP 的中部，而腿体感区位于手体感区的外侧。
