What does the G in this thick needle model mean? Is it the length or thickness of the needle?

is the thickness of the needle. The type g of the thick needle indicates that the puncture and sampling of the cancerous tissue cells are relatively thick. The success rate of needle biopsy sampling in 1-2 times is 84.5 percent , which is significantly higher than that of 18g, which is 38.9 percent .

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