MinR 10/20 system: Quantitative and reproducible cranial landmark setting method for MRI based on minimum initial reference points
MinR 10/20 system: Quantitative and reproducible cranial landmark setting method for MRI based on minimum initial reference points
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DOI：
10.1016/j.jneumeth.2016.02.024
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发表时间：
2016-05-01
影响因子：
3
通讯作者：
Taga, Gentaro
中科院分区：
文献类型：
--
作者：
Tsuzuki, Daisuke;Watanabe, Hama;Taga, Gentaro
背景：国际10/20系统不仅是描述脑电图（EEG）定位的基本方法，而且还为使用参考MRI数据库的概率空间配准方法提供中间颅骨标志。然而，国际 10/20 系统的四个初始参考标志之一的 inion 的存在并不明显，并且很难在 MRI 上定位。新方法：MinR 10/20 系统仅使用三个初始参考点：鼻根 (Nz) 和左右耳前点（AR 和 AL），但不使用 inion (Iz)。使用 MinR 10/20 系统，首先将枕骨隆起的最后点 Ilz（模拟 Iz）确定为 Iz 点的探索性替代点。接下来，根据传统的国际 10/20 系统参考这四个参考点（Nz、AL、AR 和 Ilz）计算其他地标。结果：MNI 空间中头部和皮质上地标位置估计的整体趋势在 MinR 和国际 10/20 系统之间没有很大差异。与现有方法的比较：MinR 和国际 10/20 系统应用于 17 个成人头部 MRI 的比较显示，MNI 空间中头部和皮质的地标位置估计的整体趋势差异不大。 MNI 坐标系中头部和皮层表面的地标位置估计。此外，MinR 10/20 系统的变异性比传统国际 10/20 系统更小。结论：MinR 10/20 系统被证明是基于头皮的脑图方法的现代计算空间分析中传统国际 10/20 系统的实用替代方案。 (C) 2016 Elsevier B.V. 保留所有权利。
Background: The international 10/20 system is not only a fundamental method for describing positioning for electroencephalography (EEG), but also provides intermediate cranial landmarks for the probabilistic spatial registration methods that use a reference-MRI database. However, the presence of the inion, one of the four initial reference landmarks of the international 10/20 system, is inconspicuous and can be difficult to locate on MRIs.New method: The MinR 10/20 system utilizes only three initial reference points, the nasion (Nz) and the right and left preauricular points (AR and AL), but does not employ the inion (Iz). With the MinR 10/20 system, first the most posterior point on the occipital protuberance, Ilz (Imitated Iz), is identified as an exploratory alternative to the Iz point. Next, the other landmarks are calculated according to the conventional international 10/20 system referring to these four reference points (Nz, AL, AR and Ilz).Results: Holistic tendencies for landmark position estimations on the heads and cortices in MNI space did not vary greatly between MinR and international 10/20 systems.Comparison with existing methods: A comparison of MinR and international 10/20 systems applied to seventeen adult head MRIs revealed little variance in holistic tendencies for landmark position estimations on head and cortex surfaces in the MNI coordinate system. Furthermore, variability was smaller with the MinR 10/20 system than with the conventional international 10/20 system.Conclusions: The MinR 10/20 system proved to be a practical alternative to the conventional international 10/20 system in modern computational spatial analysis for scalp-based brain mapping methods. (C) 2016 Elsevier B.V. All rights reserved.