The 2D modified head impulse test: A 2D technique for measuring function in all six semi-circular canals
The 2D modified head impulse test: A 2D technique for measuring function in all six semi-circular canals
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DOI：
10.3233/ves-2011-0421
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发表时间：
2011-01-01
影响因子：
2.3
通讯作者：
Cremer, Phillip D.
中科院分区：
文献类型：
--
作者：
Migliaccio, Americo A.;Cremer, Phillip D.
头脉冲试验可用于测量所有六个半规管的外周前庭功能。传统上，通过围绕平分矢状面和冠状面的对角平面从起始中性位置（面向前方）旋转头部来测量垂直椎管功能。这些类型的头部旋转引起具有大的垂直和扭转（关于视线）角速度分量的眼球运动。需要三维（3D：水平、垂直和扭转）眼测量技术来测量这些速度分量。我们想确定结合改良的头部脉冲测试的2D测量是否足以测量所有六个根管的功能。在这项研究中，我们使用传统的头部脉冲测试和“金标准”3D（双线圈）巩膜探测线圈技术测量了外周单侧功能减退患者（n = 5）和对照组（n = 4）的个体根管功能。我们将这些结果与使用2D线圈技术（单线圈）的2D改良头部脉冲测试的结果进行了比较。我们表明，这两种技术检测到类似水平的不对称功能的患者，并同样准确地隔离运河功能减退。我们的结论是，2D眼测量技术，如视频瞳孔跟踪，可以用来测试所有六个运河。
The head impulse test can be used to measure peripheral vestibular function of all six semicircular canals. Traditionally, vertical canal function is measured by rotating the head from a starting neutral position (forward facing) about a diagonal plane that bisects the sagittal and coronal planes. These types of head rotations elicit eye movements with large vertical and torsional (about the line of sight) angular velocity components. Three-dimensional (3D: horizontal, vertical and torsional) eye measurement techniques are needed to measure these velocity components. We wanted to determine whether 2D measurements coupled to a modified head impulse test are sufficient to measure function of all six canals. In this study we measured individual canal function in patients (n = 5) with peripheral unilateral hypofunction and control subjects (n = 4) using the traditional head impulse test and the 'gold standard' 3D (dual-coil) scleral search coil technique. We compared these results with those from our 2D modified head impulse test using the 2D coil technique (single-coil). We show that both techniques detect similar levels of asymmetrical function in patients and are equally accurate in isolating canals with hypofunction. We conclude that 2D eye measurement techniques, such as video pupil-tracking, can be used to test all six canals.