来自《耶鲁大学开放课程：生物医学工程探索 第20集 第20集》

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  and you would-- the detector was really a piece of film
  探测器就是真正的胶片
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  that you would take out of the machine.
  然后从X射线机中取出胶片
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  You would develop it with chemicals, the same way you develop--
  用化学药品冲印
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  any other kind of photographic film.
  如同冲印其他照片一样
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  Now, there are detectors that are electronic
  现在 有了电子的探测器
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  and so you can detect things electronically without film.
  所以可以不用胶片 而用电子手段探测
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  If you have an X-ray though you probably--
  如果你照过X线片
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  if you have one at home an X-ray that your parents gave you,
  如果你家里有你爸妈给你的X线片
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  say you're going off to college take your chest X-ray--
  比如下课后能拿来的胸部X线片
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  anybody bring one?
  谁能拿来一张
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  Well, if you did it would be probably a real piece of film.
  如果你带来一张 可能就是一张真胶片
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  X-rays are formed from high energy radiation,
  X射线由高能辐射形成