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首页> 外文期刊>American Journal of Neuroradiology >MR Imaging and Quantification of the Movement of the Lamina Terminalis Depending on the CSF Dynamics
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MR Imaging and Quantification of the Movement of the Lamina Terminalis Depending on the CSF Dynamics

机译：MR成像和椎板末端运动的量化取决于CSF动力学

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摘要

BACKGROUND AND PURPOSE: Brain pulsation is a well-known observation in neurosurgery, but methods for its visualization on MR imaging, like phase imaging, do not provide a detailed structural view. We prospectively investigated electrocardiographic (ECG)-gated cine true fast imaging with steady-state precession (FISP) sequence on volunteers to test a sequence for demonstrating brain pulsation and movements of intracranial structures related to CSF dynamics. MATERIALS AND METHODS: Eleven healthy volunteers were investigated with prospectively ECG-gated cine true-FISP in the midsagittal plane. A total of 50 phases were recorded per cardiac cycle and per volunteer. The lamina terminalis was chosen to study the pulsatility of the brain, and the optic recess diameter was chosen for means of objective quantification of the degree of pulsatility. RESULTS: Pulsatile motion of the lamina terminalis was apparent in all volunteers on the cine mode. The mean diameter of the optic recess was 2.5 mm. The greatest change in diameter in 1 volunteer was 1.5 mm. The mean change in diameter was 40% during 1 cardiac cycle. CONCLUSIONS: Cine true-FISP sequence is a well-suited method for investigations of passive movements of the ventricular system. It shows pulsations of the brain as well as passive changes caused by CSF dynamics with high temporal and spatial resolution.
机译：背景与目的：脑搏动是神经外科中的一个著名观察，但其在MR成像上的可视化方法（如相位成像）并未提供详细的结构视图。 我们前瞻性地研究了自愿者心电图（ECG）门控 具有稳定状态进动（FISP）序列的电影真实快速成像，以测试志愿者的证明与脑脊液动力学有关的脑搏动和颅内结构的运动。材料和方法：研究了11名健康志愿者，他们前瞻性地使用了心电门控的电影-矢状 平面中的-FISP。每个心动周期 和每个志愿者总共记录了50个阶段。选择椎板终末层来研究 大脑的搏动性，并选择光学凹部直径 作为客观量化程度的方法。结果：在电影模式下的所有志愿者中，椎板末端的搏动都是明显的 。 光学凹槽的平均直径为2.5毫米。 1志愿者的最大直径变化是1.5毫米。在1个心动周期中，直径的平均变化为40％ 。 结论：Cine true-FISP序列是一种适合研究以下情况的方法： 心室系统的被动运动。 它显示了大脑的搏动以及CSF动力学在高时空分辨率下引起的被动变化 。

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  • 来源
    《American Journal of Neuroradiology》 |2009年第1期|199-202|共4页
  • 作者

    D. Reubelt; L.C. Small; M.H.K. Hoffmann; T. Kapapa; B.L. Schmitz;

  • 作者单位

    Neuroradiology Section, University Hospitals Ulm, Ulm, Germany;

    Neuroradiology Section, University Hospitals Ulm, Ulm, Germany;

    Department of Diagnostic and Interventional Radiology, University Hospitals Ulm, Ulm, Germany;

    Department of Neurosurgery, University Hospitals Ulm, Ulm, Germany;

    Neuroradiology Section, University Hospitals Ulm, Ulm, Germany;

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