Development of a 1.0 T MR microscope using a Nd-Fe-B permanent magnet
Development of a 1.0 T MR microscope using a Nd-Fe-B permanent magnet
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DOI：
10.1016/s0730-725x(01)00400-3
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发表时间：
2001-07-01
影响因子：
2.5
通讯作者：
Kose, K
中科院分区：
文献类型：
--
作者：
Haishi, T;Uematsu, T;Kose, K
采用高性能Nd-Fe-B磁性材料制成的永磁体和紧凑的MRI控制台(54 cm (W) x 77 cm (H) x 60 cm (D)，重量80 kg)，研制了紧凑的1.0 T磁共振显微镜。由于永磁体的磁场具有较大的温度系数（- 1200ppm /deg），因此开发了用于成像序列的内部核磁共振锁定技术。用几种生物标本对该系统的性能进行了评价。因此，在实际成像时间（0.5-7.5小时）下，获得了（50 muM）(3) -(200 muM)(3)体素尺寸的良好信噪比3D图像。因此，我们得出结论，永磁紧凑型磁共振显微镜作为一种研究或分析工具具有很大的前景。(C) 2001爱思唯尔科学公司版权所有。
A compact 1.0 T MR microscope was developed using a permanent magnet made of high performance Nd-Fe-B magnetic material and a compact MRI console (54 cm (W) x 77 cm (H) x 60 cm (D), 80 kg weight). Since the magnetic field of the permanent magnet had a large temperature coefficient (-1200 ppm/deg), an internal NMR locking technique was developed for the imaging sequences. The performance of the system was evaluated using several biological specimens. As a result, good SNR 3D images at (50 muM)(3) -(200 mum)(3) voxel dimensions were obtained in practical imaging times (0.5-7.5 hours). Thus we have concluded that the permanent-magnet compact MR microscope has great promise as a research or analytical tool. (C) 2001 Elsevier Science Inc. All rights reserved.