Effect of motion on two-dimensional Fourier transformation magnetic resonance images. [Dogs, phantoms]
Effect of motion on two-dimensional Fourier transformation magnetic resonance images. [Dogs, phantoms]
复制标题
运动对二维傅里叶变换磁共振图像的影响。
DOI：
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发表时间：
1984
期刊：
影响因子：
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通讯作者：
M. Clampitt
中科院分区：
文献类型：
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作者：
C. Schultz;R. Alfidi;A. Nelson;S. Kopiwoda;M. Clampitt
运动对二维傅里叶变换磁共振（MR）图像的影响进行了研究，使用幻影，动物和正常志愿者。在对体模成像时模拟呼吸运动。除了图像模糊之外，运动还产生重影或图像谐波。在呼吸过程中和箭毒给药后获得的犬图像显示，呼吸运动消除后，犬的情况有显著改善。正常志愿者的图像与呼吸和心脏门控改善，但数据采集时间显着增加。这些结果表明，MR图像质量可以通过在单次屏气内采集所有必要数据的系统来提高。
The effect of motion on two-dimensional Fourier transformation magnetic resonance (MR) images was investigated using phantoms, animals, and normal volunteers. Respiratory motion was simulated while imaging the phantoms. In addition to image blurring, motion produced ghost images, or image harmonics. Canine images, which were obtained during respiration and after the administration of curare, showed significant improvement after respiratory motion was eliminated. Images of normal volunteers were improved with respiratory and cardiac gating, but data acquisition time was significantly increased. These results indicate that MR image quality could be improved with a system that acquires all necessary data within a single breathhold.