Nakagawa said that normally nuclear power plant workers in Japan are limited to accumulated radiation doses of 100 millisieverts.

中川解释说，正常情况下，日本核电站的工作人员积累的核辐射剂量限制在100毫希弗以内。

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But to put this in perspective, he pointed out that if someone on a typical Japanese diet drank this milk for a whole year, the accumulated radiation would equal that from a single ct scan.

但是他说，要正确地看待这个问题，他指出，假如一个人按日本人通常的饮食习惯连续饮用这种牛奶一整年，积累下来的放射性也只相当于做一次CT检查的量。

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That's a sizable chunk of an astronaut's career cap of 1, 000 millisieverts which many international space agencies use to limit the accumulated radiation dosage in space.

NPR: Astronauts Face Radiation Threat On Long Mars Trip

Before I order a CT Scan that adds to the cumulative ionizing radiation the patient has accumulated and spend a large sum of money, I want to eliminate the possibility that it could be addressed with a simpler, less invasive approach.

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