Variation of lateral ventricular volume during the cardiac cycle observed by MR imaging.
Variation of lateral ventricular volume during the cardiac cycle observed by MR imaging.
复制标题
磁共振成像观察心动周期期间侧脑室容积的变化。
DOI：
10.1007/978-3-662-11158-1_29
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
R. Mezrich
中科院分区：
文献类型：
--
作者：
Ellen Lee;Jin;R. Mezrich
脑脊液搏动表明心动周期期间脑室大小的变化。动脉血流和静脉流出是造成变化的两个主要组成部分。具有心脏门控功能的高分辨率 MR 成像可以清晰地描绘出边界清晰的脑室。通过使用复杂的自动边缘检测算法，可以高精度和准确地测量心动周期期间心室大小的细微变化。对12名正常人的脑室进行检查，发现侧脑室的大小在心动周期中有10-20%的变化。该模式很复杂，但外观与颅内压脉冲波形相似。这种变化表明，脉络丛可能作为目前公认的脑脊液搏动源发挥着更大的作用。测量脑室容积变化的能力作为诊断脑弹性异常疾病的无创方法具有临床意义。
CSF pulsation suggests variation in the size of the cerebral ventricles during the cardiac cycle. The arterial blood flow and venous outflow are two major components that contribute to the variation. High-resolution MR imaging with cardiac gating provides sharp delineation of the cerebral ventricles with clear boundaries. Subtle changes in the size of the ventricles during the cardiac cycle are measurable with high precision and accuracy by using a sophisticated automated edge-detection algorithm. In 12 normal individuals, the cerebral ventricles were examined, and the size of the lateral ventricles showed a 10-20% change during the cardiac cycle. The pattern is complex but similar in appearance to the intracranial pressure pulse waveform. The variation suggests that the choroid plexus may play a greater role as a source of CSF pulsation that currently acknowledged. The ability to measure the variations in ventricular volume has clinical implication as a noninvasive method for the diagnosis of diseases with abnormal brain elasticity.