The interchange of the optical fiber guide light needle and the needle core of a retainable needle are not needed when in use, and the blood efflux because of inexperienced operation can be avoided.

使用时无需进行光纤导光针与置留针针芯的互换，可避免因操作不熟练造成的血液外流。

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A special needle is inserted directly into the tumor and light energy is passed through a laser.

VOA: special.2010.11.23

When a pulse of light is sent into the tumor using fiber optic cable that is threaded into a tumor using a biopsy needle, the molecule absorbs the light energy, converts it electrical energy that then causes tumor cells to self destruct.

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Highly polished beveled edges reflect light in two directions for better legibility and emphasize needle-sharp tips, lending an air of Germanic precision.

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Gout is most easily and commonly diagnosed by placing a needle into the inflamed joint and withdrawing fluid that is examined under a polarized light microscope.

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