It provides an alternative path for the blood to travel through.
它提供了一个替代路径的血液旅行。
A radioactive particle moving in a blood stream causes transient changes of dose rate near its path.
当一个放射性物质在血流中移动时在它的路径附近引起剂量率的瞬间变化。
Polygonal approximation is used to find out all the possible split paths. And the optimal split path is chosen according to the assumption that blood cells are in round shapes.
这种算法在分解中利用多边形近似寻找出所有可能的分割线，结合血细胞是圆形的假设确定最佳分割线。
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