Because of their ariable imaging characteristics, leiomyomas are not definitiely distinguished from schwannomas or fibromas. 由于平滑肌瘤的多变的图像特征，和神经鞘瘤或纤维瘤不能明确区分。
The watermark consists of a pseudorandom sequence and its strength is modulated according to the local image characteristics. 水印为二值伪随机序列，其强度可通过局部图像特征来调节。
