Three-dimensional distribution of CT attenuation in the lumbar spine pedicle wall.
Three-dimensional distribution of CT attenuation in the lumbar spine pedicle wall.
复制标题
DOI：
10.1038/s41598-020-80676-5
复制
发表时间：
2021-01-18
影响因子：
4.6
通讯作者：
Inoue N
中科院分区：
文献类型：
--
作者：
Irie TY;Irie T;Espinoza Orías AA;Segami K;Iwasaki N;An HS;Inoue N
本研究在体内研究了Hounsfield单位（HU）测量的腰椎椎弓根壁CT衰减的三维分布。75名志愿者接受了临床腰椎CT扫描。用定制软件分析数据，以确定椎弓根壁衰减值的区域变化。采用沿着椎弓根长轴的圆柱坐标系计算椎弓根壁三维衰减分布，并确定最高衰减值。椎弓根横截面分为四个象限：外侧、内侧、颅侧和尾侧。计算所有腰椎节段（L1-5）每个象限的平均HU值。按性别、年龄、脊柱节段和解剖象限分析椎弓根壁衰减。在两个性别和两个年龄组中，L1和L5椎弓根壁的平均HU值显著低于L2-4之间的值。此外，在所有节段，内侧象限的HU值均高于外侧象限，而在L1-3，尾侧象限的HU值高于头侧象限，而在L4-5，尾侧象限的HU值低于头侧象限。这些发现可以解释椎弓根螺钉在椎弓根外侧壁断裂的发生率较高的原因。
This study investigated in vivo the three-dimensional distribution of CT attenuation in the lumbar spine pedicle wall measured in Hounsfield Unit (HU). Seventy-five volunteers underwent clinical lumbar spine CT scans. Data was analyzed with custom-written software to determine the regional variation in pedicle wall attenuation values. A cylindrical coordinate system oriented along the pedicle’s long axis was used to calculate the pedicular wall attenuation distribution three-dimensionally and the highest attenuation value was identified. The pedicular cross-section was divided into four quadrants: lateral, medial, cranial, and caudal. The mean HU value for each quadrant was calculated for all lumbar spine levels (L1–5). The pedicle wall attenuation was analyzed by gender, age, spinal levels and anatomical quadrant. The mean HU values of the pedicle wall at L1 and L5 were significantly lower than the values between L2–4 in both genders and in both age groups. Furthermore, the medial quadrant showed higher HU values than the lateral quadrant at all levels and the caudal quadrant showed higher HU values at L1–3 and lower HU values at L4–5 than the cranial quadrant. These findings may explain why there is a higher incidence of pedicle screw breach in the pedicle lateral wall.
登录
查看更多内容
影响因子：
2.8
作者：
Inceoglu, Serkan;Kilincer, Cumhur;Mclain, Robert F.
通讯作者：
Mclain, Robert F.
影响因子：
3
作者：
Kothe, R;OHolleran, JD;Panjabi, MM
通讯作者：
Panjabi, MM
影响因子：
4.1
作者：
Nonaka, K;Fukuda, S;Ohya, K
通讯作者：
Ohya, K
影响因子：
2.8
作者：
Dai, Li-Yang;Wang, Xiang-Yang;Xu, Hua-Zi
通讯作者：
Xu, Hua-Zi
影响因子：
1.4
作者：
MAILLOT, C;WOLFRAMGABEL, R
通讯作者：
WOLFRAMGABEL, R