Monnier J P, Chermet J, Tubiana J M
J Radiol Electrol Med Nucl. 1977 Dec;58(12):841-2.
Duplicating x-ray films is a matter of interest to all physicians, even if they are not radiologists. The impossibility of a direct reading is a major drawback of reproduction in the form of slides. By contrast, a transparency is an irreplaceable teaching tool. Contact printing of slides on counterpart film is a process within the reach of all departments of radiology. In one single step, this process gives a plate of 100 transparencies on counterpart film costing about 2.20 dollars.
复制X光片是所有医生都感兴趣的事情，即使他们不是放射科医生。无法直接阅读是幻灯片形式复制的一个主要缺点。相比之下，透明片是一种不可替代的教学工具。在配套胶片上对幻灯片进行接触式印刷是放射科所有科室都能做到的一个过程。通过这一过程，一步就能在成本约为2.20美元的配套胶片上得到100张透明片。
