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Liliequist membrane: three-dimensional constructive interference in steady state MR imaging.

Yasutaka Fushimi·Yukio Miki·Tetsuya Ueba·Mitsunori Kanagaki·Takahiro Takahashi·Akira Yamamoto·Tabassum L Haque·Junya Konishi·Jun A Takahashi·Nobuo Hashimoto·Junji Konishi
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Abstract

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.

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AdultArachnoidBrainDiencephalonFemaleHumansImaging, Three-DimensionalMagnetic Resonance ImagingMaleMesencephalonMiddle AgedOculomotor NerveReference ValuesJournal Article

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Yasutaka Fushimi, Yukio Miki, Tetsuya Ueba, Mitsunori Kanagaki, Takahiro Takahashi, Akira Yamamoto, Tabassum L Haque, Junya Konishi, Jun A Takahashi, Nobuo Hashimoto, Junji Konishi. 2003. Liliequist membrane: three-dimensional constructive interference in steady state MR imaging.. https://doi.org/10.1148/radiol.2292021507

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