为了更好地理解这个解决方案，让我们考察一个使用伪代码的例子，该例子首先使用传统方法，然后使用集中的解决方案。

To better understand the solution, let's see an example using pseudo-code, first with conventional approaches, followed by the centralized solution.

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而传统的延拓方法在前后两个边界处都会产生伪边缘，并且在延拓时还需考虑滤波器系数长度的奇偶性。

But traditional border processing methods will cause false edges, and also should consider the parity of filter coefficient.

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双能CT也已被证明能够改进图像质量和减少伪影如射线硬化等在CT灌注成像方面的传统局限性（101）。

Dual-energy CT has also been shown to allow for improvements in image quality and reduction in artifacts such as beam hardening that have traditionally limited CT perfusion imaging(101).

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