海马沟残余：超高分辨率7T磁共振成像在非老年成年人中的常见表现
Hippocampal Sulcus Remnant: Common Finding in Nonelderly Adults on Ultra-High-Resolution 7T Magnetic Resonance Imaging.
作者信息
Yamashita Koji, Zong Xiaopeng, Hung Sheng-Che, Lin Weili, Castillo Mauricio
机构信息
From the Department of Radiology.
出版信息
J Comput Assist Tomogr. 2020 Jan/Feb;44(1):43-46. doi: 10.1097/RCT.0000000000000944.
OBJECTIVE
The objective of this study was to investigate the frequency of hippocampal sulcus remnants (HSRs) in nonelderly adults using ultra-high-resolution 7T magnetic resonance (MR) images and their imaging features.
METHODS
A total of 33 healthy adults underwent 7T MR, and multiplanar images of 66 temporal lobes were reviewed independently by 2 neuroradiologists. The detectability of the HSR was calculated. In addition, the interobserver agreement on the rating scale was evaluated using the κ statistic.
RESULTS
Both observers identified HSRs with 7T MR images in all subjects. Excellent interobserver agreement was shown (κ = 1.0). The shape of HSRs was variable (spot-like, curvilinear, ovoid, or beaded appearance). Volumes of the HSRs were not correlated with age.
CONCLUSIONS
Hippocampal sulcus remnants are commonly seen in healthy nonelderly adults using 7T MR imaging. Accurate diagnosis of HSR based on the microanatomy of hippocampus makes it easier to differentiate them from lesions, and it may help prevent unnecessary treatment.
目的
本研究的目的是利用超高分辨率7T磁共振（MR）图像研究非老年成年人海马沟残余（HSR）的发生率及其成像特征。
方法
共有33名健康成年人接受了7T MR检查，2名神经放射科医生独立回顾了66个颞叶的多平面图像。计算HSR的可检测性。此外，使用κ统计量评估观察者间在评分量表上的一致性。
结果
两位观察者在所有受试者的7T MR图像中均识别出了HSR。观察者间一致性良好（κ = 1.0）。HSR的形状各异（点状、曲线状、椭圆形或串珠状外观）。HSR的体积与年龄无关。
结论
使用7T MR成像在健康非老年成年人中常见海马沟残余。基于海马微观解剖结构对HSR进行准确诊断有助于将其与病变区分开来，可能有助于避免不必要的治疗。
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