ARTIFACTS DUE TO STIMULUS CORRELATED MOTION IN FUNCTIONAL IMAGING OF THE BRAIN
ARTIFACTS DUE TO STIMULUS CORRELATED MOTION IN FUNCTIONAL IMAGING OF THE BRAIN
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DOI：
10.1002/mrm.1910310307
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发表时间：
1994-03-01
影响因子：
3.3
通讯作者：
BYDDER, GM
中科院分区：
文献类型：
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作者：
HAJNAL, JV;MYERS, R;BYDDER, GM
为了评估刺激相关运动对功能性磁共振图像外观的影响，四名正常志愿者分别执行了常规的视觉和运动方案，并使用图像配准技术回顾性地监测受试者的运动。在三项研究中，利用从配准过程中获得的位置信息，由单个基线图像构建合成数据集。然后从合成图像集和功能性图像集中创建累积差异图像。在所有八项研究中都检测到了刺激相关运动，并且在每种情况下，合成的累积差异图像都与等效的功能性图像显示出惊人的相似性。
To assess the effect of stimulus correlated motion on the appearance of functional magnetic resonance images, conventional visual and motor protocols were each performed by four normal volunteers and an image co-registration technique was used to retrospectively monitor subject motion. In three studies synthetic data sets were constructed from single baseline images using the positional information obtained from the co-registration procedure. Cumulative difference images were then created from both the synthetic and functional image sets. Stimulus correlated motion was detected in all eight studies and the synthetic cumulative difference images showed striking similarities to the equivalent functional images in each case.