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利用核磁共振(Nuclear Magnetic Rson-ance-NMR)对人体采集信号,用以重建二维或三维图象,在临床医学上有其独特的优点。它的信息量比X-CT要大得多,这是因为NMR信号取决于核子密度(通常为氢核~1H)、弛豫时间(relaxation time)T_1和T_2以及运动
The use of nuclear magnetic resonance (Nuclear Magnetic Rson-ance-NMR) to signal the human body to reconstruct two-dimensional or three-dimensional images has its unique advantages in clinical medicine. Its amount of information is much larger than that of X-CT because the NMR signal depends on the density of the nuclei (usually hydrogen nuclei ~ 1H), the relaxation times T_1 and T_2 and the movement