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Copper pyruvaldehyde bis（N -methylthiosemicarbazone） complex, or Cu-PTSM, belonging to a class of neutral, lipophilic complexes ,is a positron emission tomography radiopharmaceutical that can be used to evaluate blood flow in the heart, brain, and tumors without following any side effect .

Cu-PTSM是中性亲脂性复合物，用于PET显像的放射性药物由于该制剂很容易扩散到细胞内，因此注射Cu-PTSM后可以了解心、脑和肿瘤部位的血流灌注状况，它不伴有副反应的发生，且合成比较容易，所以是一种非常有途的新型PET显像剂。

Last week's guilty verdict has brought no illumination for foreign companies worried that they too could find themselves violating ill-defined Chinese secrecy laws, writes William MacNamara.

上周力拓案的有罪判决并没有给外国公司带来任何启示。它们担忧，可能会发现自己也违反了中国定义不明确的保密法。