Keywords Manganese-enhanced Magnetic resonance imaging;Contrast agent;Brain;Neuronal tract;Orbitofrontal cortex;Ventral tegmental area;Morphine;Drug abuse;Rat;Mice;

• 锰离子增强磁共振成像;造影剂;脑;神经通路;眶额叶;腹侧被盖区;吗啡;药物滥用;大鼠;小鼠;