With this shortage of medical isotopes looming worldwide, other countries have begun to act.

随着医用同位素短缺的危机蔓延全球，其他国家开始展开行动。

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Today almost all of the world's supply of medical isotopes comes from just five reactors (see map).

目前几乎全世界的医用同位素都产自五座反应堆(见图2)。

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In any event, Iran could buy medical isotopes it needs from private suppliers, as most other countries do.

不管怎样，伊朗可以从私人供应商那里买到医用核素，正像大部分其他国家那样。

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The uranium would then be returned to Tehran for use by a small research reactor making medical isotopes.

VOA: standard.2009.10.19

The rods would be used to power a research reactor in the Iranian capital making medical isotopes.

VOA: standard.2009.10.21

Under the scheme, Russia would further enrich the uranium to the 20 per cent purity needed for use in a research reactor in Tehran which produces medical isotopes but is running out of fuel.

VOA: standard.2009.10.24

Iran insists its purposes are purely civilian, asserting it needs enriched uranium to make medical isotopes.

BBC: Obama Nowruz message: Iran must 'reduce nuclear tension'

In any event, Iran could buy medical isotopes it needs from private suppliers, as most other countries do.

ECONOMIST: Iran's nuclear programme: Game resumed | The

Iran says it needs enriched uranium for its Bushehr nuclear power plant to generate electricity, and to produce medical isotopes.

BBC: Iran unveils uranium activities at Saghand and Ardakan