Liliequist membrane: Three-dimensional constructive interference in steady state MR imaging
Liliequist membrane: Three-dimensional constructive interference in steady state MR imaging
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DOI：
10.1148/radiol.2292021507
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发表时间：
2003-11-01
期刊：
影响因子：
19.7
通讯作者：
Konishi, J
中科院分区：
文献类型：
--
作者：
Fushimi, Y;Miki, Y;Konishi, J
目的：利用三维（3D）傅立叶变换稳态（CISS）磁共振成像（MR）技术评价健康志愿者的利利奎斯特膜。材料与方法：作者对31名志愿者进行了三维CISS磁共振成像。他们将膜分为三段：鞍段、间脑段和中脑段。评估MR图像，以确定段，上下附着，外侧边界，厚度的Liliequist膜。结果：在31名受试者中，三维CISS MR成像分别在矢状面描绘了25名（81%）、16名（52%）和5名（16%）的Liliequist膜的鞍段、间脑段和中脑段。横向磁共振成像分别在24（77%）、10（32%）和2（6%）名受试者中描绘了这些节段，冠状磁共振成像分别在24（77%）、12（39%）和2（6%）名受试者中描绘了这些节段。在25名确定鞍段的受试者中，有22名（88%）观察到膜与鞍背的清晰附着。在16个确定间脑节段的受试者中，有8个（50%）与乳突体有明确的附着。外缘50侧中的7侧（14%）附着在动眼神经上，28侧（56%）附着在动眼神经周围的蛛网膜上。在矢状面，25名受试者中有22名（88%）的膜厚度小于第三脑室底厚度的一半。结论：利用三维CISS MR序列可以清晰地观察到Liliequist膜。(c) rsna, 2003。
PURPOSE: To evaluate the Liliequist membrane in healthy volunteers by using three-dimensional (3D) Fourier transformation constructive interference in steady state (CISS) magnetic resonance (MR) imaging.MATERIALS AND METHODS: In 31 volunteers, the authors performed 3D CISS MR imaging. They divided the membrane into three segments: the sellar, diencephalic, and mesencephalic segments. MR images were evaluated to identify the segments, superior and inferior attachments, lateral border, and thickness of the Liliequist membrane.RESULTS: Three-dimensional CISS MR imaging depicted the sellar, diencephalic, and mesencephalic segments of the Liliequist membrane in the sagittal plane in 25 (81%), 16 (52%), and five (16%) of the 31 subjects, respectively. Transverse MR imaging depicted these segments in 24 (77%), 10 (32%), and two (6%) subjects, respectively, and coronal MR imaging depicted them in 24 (77%), 12 (39%), and two (6%) subjects, respectively. Clear attachment of the membrane to the dorsum sellae was observed in 22 (88%) of 25 subjects in whom the sellar segment was identified. Clear attachment to the mamillary body was identified in eight (50%) of 16 subjects in whom the diencephalic segment was identified. The Liliequist membrane was attached to the oculomotor nerve on seven (14%) of 50 sides of the lateral border and to the arachnoid membrane around the oculomotor nerve on 28 (56%) sides. In the sagittal plane, the thickness of the membrane was less than one-half the thickness of the third ventricle floor in 22 (88%) of 25 subjects.CONCLUSION: The Liliequist membrane can be visualized by using 3D CISS MR sequences. (C) RSNA, 2003.