大孔角：B 型颅底凹陷症的新参数。
Foramen Magnum Angle: A New Parameter for Basilar Invagination of Type B.
机构信息
Postgraduate Program in Neuropsychiatry, Federal University of Pernambuco, Recife, Brazil.
Postgraduate Program in Neuropsychiatry, Federal University of Pernambuco, Recife, Brazil.
出版信息
World Neurosurg. 2021 Aug;152:121-123. doi: 10.1016/j.wneu.2021.06.028. Epub 2021 Jun 12.
OBJECTIVE
To describe the foramen magnum angle (FMA) as a new parameter for basilar invagination (BI) type B.
METHODS
The FMA was performed on sagittal slice of magnetic resonance imaging (MRI) as a line from the hard palate to the opisthion (angle vertex), and another line from the opisthion to the basion. The MRIs from 31 participants with BI type B and 96 controls were used. Intraclass correlation coefficient, descriptive data, and receiver operating characteristic (ROC) curve were used for statistical analysis at the 95% confidence interval.
RESULTS
The interobserver agreement of the FMA was 0.952. Patients with BI type B had a FMA significantly greater (25.9° ± 9.3°) than control participants (11.6° ± 4.9°) (P < 0.001). The area under the ROC curve showed a diagnostic value of 0.947. The FMA showed sensitivity 0.900 and specificity 0.854 for the cutoff criterion 17° (P < 0.001).
CONCLUSIONS
The FMA had an optimal diagnostic value that provided complementary evidence to investigate BI type B.
目的
描述颅底凹陷症（BI）B 型的枕骨大孔角（FMA）作为一个新的参数。
方法
在磁共振成像（MRI）矢状位上测量 FMA，一条线从硬腭到枕骨隆突（角顶点），另一条线从枕骨隆突到基线。使用 31 例 BI 型 B 和 96 例对照的 MRI。使用组内相关系数、描述性数据和受试者工作特征（ROC）曲线进行统计分析，置信区间为 95%。
结果
FMA 的观察者间一致性为 0.952。BI 型 B 的患者 FMA 显著大于对照组（25.9°±9.3°比 11.6°±4.9°）（P<0.001）。ROC 曲线下面积显示诊断价值为 0.947。FMA 对 17°的截断标准具有 0.900 的敏感性和 0.854 的特异性（P<0.001）。
结论
FMA 具有最佳的诊断价值，为研究 BI 型 B 提供了补充证据。
Zotero 插件