OBJECTIVE: To observe the 1H-MRS manifestations of patients with heroin spongiform leucoencephalopathy so as to analyze metabolic regularities of N-acetyl aspartate, creatine and bilineurine in brain.

目的：观察海洛因海绵状白质脑病患者的1H-MRS表现，分析其脑内N-乙酰天门冬氨酸、肌酸和胆碱的代谢规律。

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In January 1991, Kokang warlord Peng Jia-sheng assured visiting U.N. officials of plans to end heroin production in Special Region No. 1 within one year and eradicate opium cultivation within seven.

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