Departments of Radiology, Kyoto Prefectural University of Medicine, Japan.
AJNR Am J Neuroradiol. 2010 Apr;31(4):732-5. doi: 10.3174/ajnr.A1870. Epub 2009 Nov 19.
The Vim and VPL are important target regions of the thalamus for DBS. Our aim was to clarify the anatomic locations of the ventral thalamic nuclei, including the Vim and VPL, on MR imaging.
Ten healthy adult volunteers underwent MR imaging by using a 1.5T whole-body scanner. The subjects included 5 men and 5 women, ranging in age from 23 to 38 years, with a mean age of 28 years. The subjects were imaged with STIR sequences (TR/TE/TI = 3200 ms/15 ms/120 ms) and DTI with a single-shot echo-planar imaging technique (TR/TE = 6000 ms/88 ms, b-value = 2000 s/mm(2)). Tractography of the CTC and spinothalamic pathway was used to identify the thalamic nuclei. Tractography of the PT was used as a reference, and the results were superimposed on the STIR image, FA map, and color-coded vector map.
The Vim, VPL, and PT were all in close contact at the level through the ventral thalamus. The Vim was bounded laterally by the PT and medially by the IML. The VPL was bounded anteriorly by the Vim, laterally by the internal capsule, and medially by the IML. The posterior boundary of the VPL was defined by a band of low FA that divided the VPL from the pulvinar.
The ventral thalamic nuclei can be identified on MR imaging by using reference structures such as the PT and the IML.
丘脑腹侧的 Vim 和 VPL 是 DBS 的重要靶点。我们的目的是在磁共振成像（MRI）上明确腹侧丘脑核，包括 Vim 和 VPL 的解剖位置。
10 名健康成年志愿者接受了 1.5T 全身扫描仪的 MRI 检查。受试者包括 5 名男性和 5 名女性，年龄 23-38 岁，平均年龄 28 岁。使用 STIR 序列（TR/TE/TI=3200 ms/15 ms/120 ms）和单次激发回波平面成像技术（TR/TE=6000 ms/88 ms，b 值=2000 s/mm2）对受试者进行 DTI 成像。使用 CTC 和脊髓丘脑束的示踪技术来识别丘脑核。PT 示踪作为参考，将结果叠加到 STIR 图像、FA 图和彩色编码矢状图上。
Vim、VPL 和 PT 在通过腹侧丘脑的层面上紧密相连。Vim 外侧与 PT 相邻，内侧与 IML 相邻。VPL 前侧与 Vim 相邻，外侧与内囊相邻，内侧与 IML 相邻。VPL 的后界由一条 FA 值较低的带定义，该带将 VPL 与丘脑枕分开。
可以使用 PT 和 IML 等参考结构在 MRI 上识别腹侧丘脑核。
