Occasionally, patients may require a procedure to stretchthe esophagus (endoscopic dilation) or rarely re-operation.
偶尔，病人需要做内镜下扩张术来扩张食管。 极少的情况下需要再做手术。
Erosion, dilation, opening operation and closing operation are the basis of mathematical morphology.
膨胀、腐蚀、开运算、闭运算是数学形态学的基础。
Conclusions: the treatment of achalasia of the cardia by means of double balloon dilation is a advantage approach simple to operate with the advantage of a low rate of complication and non-operation.
结论：用双球囊扩张的方法治疗贲门失弛缓症具有操作简便并发症少，不用手术的优点，是一种疗效肯定的治疗方法。
Firstly, gray image changed into binary image. Then, noise and stub burr is removed by using basic operation of mathematical morphology-dilation and closing operation.
首先对灰度图进行二值化处理，然后利用数学形态学的基本运算——膨胀运算和闭运算对二值图进行消噪及去毛刺处理。
Firstly, gray image changed into binary image. Then, noise and stub burr is removed by using basic operation of mathematical morphology-dilation and closing operation.
首先对灰度图进行二值化处理，然后利用数学形态学的基本运算——膨胀运算和闭运算对二值图进行消噪及去毛刺处理。
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