Fractal dimension of intestinal tract pressure was calculated with the method from Higuchi to distinguish normal and abnormal colonic pressure signal.

• 然后将测压管拉出20cm,继续同样的测量并得出结肠压力数据,采用Higuchi算法计算肠道压力的分形维,通过分形维来区分正常的和异常的结肠压力信号。