Liliequist Membrane: Three-dimensional Constructive Interference in Steady State MR Imaging

Fushimi, Yasutaka; Miki, Yukio; Ueba, Tetsuya; Kanagaki, Mitsunori; Takahashi, Takahiro; Yamamoto, Akira; Haque, Tabassum Laz; Konishi, Junko; Takahashi, J.; Hashimoto, Nobuo; Konishi, Junji

doi:10.1148/radiol.2292021507

Cited by 72 publications

(46 citation statements)

References 21 publications

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“…This "pseudoseptum" was, in fact, caused by a herniation of the aneurysm through a perforated membrane of Liliequist. One commonly held belief about the membrane of Liliequist is that it is thick and is not fenestrated, [3][4][5][6][7][8] contrary to the finding in this case.…”

contrasting

confidence: 58%

“…Although this membrane may be evaluated noninvasively with MR imaging techniques such as 3D Fourier transform constructive interference in the steady state, 3 relatively little remains known about it.…”

Section: Discussionmentioning

confidence: 99%

“…4,10 The membrane of Liliequist is generally viewed as a continuous, unperforated, avascular fold of the tentorial arachnoid mater with a double layer, which arises from the arachnoid membrane of the dorsum sellae, 5 and has 2 distinct sheets. The superior sheet (the diencephalic membrane) 3,[5][6][7] extends from the dorsum sellae superiorly to attach to the mamillary bodies in a premamillary 4,7-8 or retromamillary 11,12 position (Fig 3). The lower sheet (the mesencephalic membrane) 3,5-7 extends posteriorly and inferiorly from the diencephalic membrane to attach to the pons and has openings for and attachments to the basilar artery and the superior cerebellar arteries.…”

Section: Discussionmentioning

confidence: 99%

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Pedunculated Basilar Terminus Aneurysm with Pseudo-Septation due to Anterior Herniation through a Perforated Membrane of Liliequist

Hacein‐Bey

Varelas²

2009

AJNR Am J Neuroradiol

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SUMMARY: Septations within cerebral arteries or aneurysms are exceedingly rare in the absence of associated fenestrations. We report an unusual unruptured pedunculated basilar apex aneurysm, with a "pseudoseptation" between the main aneurysmal sac and an anterior compartment, which was, in fact, represented by a perforation in the membrane of Liliequist, permitting anterior aneurysmal herniation into the carotid-chiasmatic cistern. The patient was successfully treated with detachable coils. This case is unusual on 2 accounts: 1) the aneurysm's appearance, and 2) the presence of a large fenestration in the membrane of Liliequist, of which anatomic features are herein reviewed.

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contrasting

confidence: 58%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Pedunculated Basilar Terminus Aneurysm with Pseudo-Septation due to Anterior Herniation through a Perforated Membrane of Liliequist

Hacein‐Bey

Varelas²

2009

AJNR Am J Neuroradiol

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“…We evaluated pulsatile propagation through the Liliequist membrane (LM), which arises from the dorsum sellae to the anterior edge of the mammillary body, 27 in the healthy volunteers using the 4D-VM images to derive time-varying velocity and pressure gradient fields in the basal cistern and using the time-SLIP images labeled in the inferior region of the LM in the interpeduncular cistern. For simplicity, we depicted the pressure gradient by its absolute value, that is, the length of the pressure gradient vector.…”

Section: Volunteer Studymentioning

confidence: 99%

“…27 The parameters for the 3D-CISS sequence were: TR, 6.9 to 7.1 ms; TE, 3.5 ms, FA, 70°; slice thickness, 0.9 mm; FOV, 24 © 24 cm 2 ; and acquisition matrix, 404 © 480.…”

Section: Volunteer Studymentioning

confidence: 99%

Visualization of Pulsatile CSF Motion Around Membrane-like Structures with both 4D Velocity Mapping and Time-SLIP Technique

et al. 2015

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Purpose: We compared the depiction of pulsatile CSF motion obtained by 4-dimensional phase-contrast velocity mapping (4D-VM) with that by time-spatial labeling inversion pulse (time-SLIP) technique in the presence of membrane structures.Materials and Methods: We compared the 2 techniques using a flow phantom comprising tubes with and without a thin rubber membrane and applied the techniques to 6 healthy volunteers and 2 patients to analyze CSF dynamics surrounding thin membrane structures, such as the Liliequist membrane (LM), or the wall of an arachnoid cyst.Results: Phantom images exhibited propagation of the flow and pressure gradient beyond the membrane in the tube. In contrast, fluid labeled by the time-SLIP technique showed little displacement from the blockage of spin travelling by the membrane. A similar phenomenon was observed around the LM in healthy volunteers and the arachnoid cyst wall in a patient.Conclusion: Four-dimensional phase-contrast velocity mapping permitted visualization of the propagation of CSF pulsation through the intracranial membranous structures. This suggests that 4D-VM and the time-SLIP technique provide different information on flow and that both techniques are useful for classifying the pathophysiological status of CSF and elucidating the propagation pathway of CSF pulsation in the cranium.

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Subarachnoid Space

Mortazavi¹,

Adeeb²,

Rizq³

et al. 2016

Bergman's Comprehensive Encyclopedia of Human Anatomic Variation

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Liliequist Membrane: Three-dimensional Constructive Interference in Steady State MR Imaging

Abstract: The Liliequist membrane can be visualized by using 3D CISS MR sequences.

Cited by 72 publications

References 21 publications

Pedunculated Basilar Terminus Aneurysm with Pseudo-Septation due to Anterior Herniation through a Perforated Membrane of Liliequist

Pedunculated Basilar Terminus Aneurysm with Pseudo-Septation due to Anterior Herniation through a Perforated Membrane of Liliequist

Visualization of Pulsatile CSF Motion Around Membrane-like Structures with both 4D Velocity Mapping and Time-SLIP Technique

Subarachnoid Space

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