一种MRI图像中自动检测肿瘤大小的新方法

MRI用于诊断脑部肿瘤、制定手术计划以及评估手术疗效等时,肿瘤大小的自动检测十分重要,其中的关键技术是检测出肿瘤部位的封闭边缘。虽然现在已有许多边缘提取算法,但这些方法应用于医学图像时很少能同时满足速度快、定位准、去噪好等要求。本文提出采用数学形态学和线形广义模糊算子相结合的方法检测肿瘤边缘,再根据检测结果得到的肿瘤部位轮廓计算肿瘤大小。试验表明,该方法在MRI图像中实施,取得了满意的效果。

A new method for automatic measuring of tumour in MRI

Automatic measuring the size of tumour in MRI images is very important, the key technique is edge detection of the tumour. This paper presents a new method, which detects the edge of tumour by adopting mathematical morphology and linear general fuzzy operator. The algorithm calculates the size of tumor according to the edge detection result. Experiments on MRI images show that the proposed approach can achieve a fast and ideal edge detection operation.