Motion artifact in magnetic resonance imaging: Implications for automated analysis
Motion artifact in magnetic resonance imaging: Implications for automated analysis
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DOI：
10.1006/nimg.2002.1076
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发表时间：
2002-05-01
期刊：
影响因子：
5.7
通讯作者：
Giedd, JN
中科院分区：
文献类型：
--
作者：
Blumenthal, JD;Zijdenbos, A;Giedd, JN
与手动技术相比，脑磁共振图像（MRI）的自动测量通常提供更高的速度和可靠性，但对运动伪影特别敏感。本研究采用了一种自动MRI分析程序，该程序量化了区域灰质体积并创建了用于验证和质量控制的图像。对每张图像进行运动伪影评估，并将其分为无、轻度、中度或重度。较大的运动伪影与较小的灰质体积相关。运动伪影的严重程度是一个重要的，但往往被忽视，在自动MRI测量的解释考虑。(C)2002 Elsevier Science（美国）。
Automated measures of cerebral magnetic resonance images (MRI) often provide greater speed and reliability compared to manual techniques but can be particularly sensitive to motion artifact. This study employed an automatic MRI analysis program that quantified regional gray matter volume and created images for verification and quality control. Motion artifact was assessed on each image and assigned a rating of none, mild, moderate, or severe. Greater motion artifact was associated with smaller gray matter volumes. Severity of motion artifact is an important, but often overlooked, consideration in the interpretation of automated MRI measures. (C) 2002 Elsevier Science (USA).