胸腰段椎体椎基静脉孔的CT影像学特征及其意义

 目的获取健康成人胸腰段椎体(T12~L3)椎基静脉孔(basivertebral foramen, BF)的基本结 构参数、形态特征等初步资料, 为进一步研究 BF与临床相关疾病提供基本的解剖学资料。方法 对 36 例健康成人胸腰段椎体进行螺旋 CT薄层扫描, 对每个节段单独进行正中矢状位和横断位重建。在重建 图像上, 测量 BF宽(BFW)、深(BFD)、高(BFH)的绝对值和相对值(BFWr、BFDr、BFHr);测量 BF距椎体 左右边缘和上下终板的距离。应用 SPSS 11.5统计学软件对上述数据进行统计学分析。结果 81%的 BF 表现为三角形或梯形;6%BF内部出现骨性间隔。相同测量节段的 BFW、BFD和 BFH最大值接近或超 过同一测量平面椎体宽、深和高的 1/3, 平均宽、深和高接近或超过同一测量平面椎体的 25%。在 T₁₂和 L₃, BF距椎体两端距离差异无统计学意义(P跃0.05)。 BF更靠近于上终板(P约 0.05)。在不同测量节段, BFW、BFH、BFWr、BFHr的均数值差异均无统计学意义(P跃0.05);而 BFD和 BFDr在 L₃更大。性别与 BF各测量参数无相关性, 年龄与 L₁ BFHr和 L₂ BFHr相关, 而体重指数与 L₁BFH、L₂BFW、L₃BFH、 L₃BFHr相关。结论 本研究检测的椎体后缘均存在 BF。 BF最常见的形态结构为三角形或梯形, 它更靠 近上终板。在不同个体, BF的物理参数存在较大差异。

Morphological features of the basivertebral foramen of T12-L3 in CT and its clinical significance

Objective To observe the morphological features of the basivertebral foramen (BF) in thoracolumbar (T₁₂,L₁,L₂ and L₃). Methods A total of 36 health adults were underwent multi-slice CT thin slice scans and three-dimensional reconstruction. In the horizontal and sagittal CT reconstruction images, BFweight (BFW), BF depth (BFD), BF high (BFH), BF relative to the body weight (BFWr), BF relative to thebody depth (BFDr), and BF relative to the body high (BFHr), were measured. The distance between the BFand each side in the horizontal and sagittal CT images were also measured. The correlation between the measured parameters of BF and the gender, age, body mass index (BMI) were analyzed statistically. Results 81% BF was triangular or trapezoid. There was a bone interval within 6% BF. In the same level in 36 cases, the maximum of BFW, BFD and BFH were approximately 1/3 vertebral body in the same plane. The averageBFW, BFD and BFH were approximately 25% vertebral body in the same plane. In all four levels, the distance from the BF to the cranial endplate was shorter than to the caudal endplate(P0.05). The mean BFD and BFDr in L₃, however, were greater than other levels. There were no significant correlations among gender and BFW, BFWr, BFD, BFDr, BFH, BFHr. There wasa correlation between the age andL1BFHr andL2BFHr, anda correlation between BMI and L₁BFH,L₂BFW,L₃BFH and L₃BFHr. Conclusion There was a BF in all specimens. The most common appearance of BF was triangular or trapezoid. BF was closer to the cranial endplatein all four levels in the sagittal CT images. Variations of BF were significantly different in individuals.