Cerebral asymmetry: MR planimetry of the human planum temporale.
Cerebral asymmetry: MR planimetry of the human planum temporale.
复制标题
大脑不对称：人类颞平面的 MR 平面测量。
DOI：
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发表时间：
1989
影响因子：
1.3
通讯作者：
H. Freund
中科院分区：
文献类型：
--
作者：
H. Steinmetz;J. Rademacher;Yanxiong Huang;H. Hefter;K. Zilles;A. Thron;H. Freund
描述了一种使用三维快速低角度拍摄磁共振（MR）数据的计算机重组对颞平面（PT）进行成像和平面测量的方法。该程序可以确定后颞上表面上该区域的大小和左右不对称性，之前的研究人员认为这是言语偏侧化的结构相关性。为了为未来的研究建立一致的方法，我们投入了特别的精力来制定 PT 边界的可靠成像标准。作者报告了由两名观察者以“盲法”方式独立对 10 具人类尸体大脑进行 PT 的 MR 平面测量。观察者间高度一致，证明了 PT 描绘的 MR 标准的可靠性。平面测量数据与相同标本切片后的后续解剖测量数据相关。两种方法的 PT 大小左右比例几乎相同（平均值 1.9）。 PT 的磁共振平面测量是一种无创、可靠、定量的方法，用于确定后言语区的大脑总体不对称性。
A method is described for the imaging and planimetric measurement of the planum temporale (PT) using computer reformations from three-dimensional fast low angle shot magnetic resonance (MR) data. The procedure allows the determination of size and left-right asymmetry of this area on the posterior supratemporal surface, which has been assumed by previous investigators to be a structural correlate of speech lateralization. To establish a consistent method for future studies, special effort was invested in the elaboration of reliable imaging criteria for the borders of the PT. The authors report MR planimetric measurements of the PT in 10 human cadaver brains performed independently and in a "blinded" fashion by two observers. A high degree of interobserver agreement was found, demonstrating the reliability of the MR criteria for PT delineation. The planimetric data correlated with those from subsequent anatomic measurements following section of the same specimens. The left-right ratios of PT size were almost the same with both methods (mean 1.9). Magnetic resonance planimetry of the PT is a noninvasive, reliable, and quantitative procedure to determine gross cerebral asymmetry in the posterior speech area.