In order to extract vessels from the image and get the pure vascular image we put forward the grayscale minimization of circle template and differential edge detection .

要对图像中的血管影像进行提取，形成纯 血管图像，我们提出了应用 圆模板灰度最小和微分边缘检测的方法。

In order to provide the morphological data for establishing human cerebral vascular diseases model using miniature swine the cerebral arterial circle and basilar artery were studied by means of 14 vascular specimens of the 3-5 months old miniature swines .

为利用小型猪建立人类脑 血管病模型提供形态学资料，研究了14头3～5月龄小型猪（北京农业大学育 成）的脑血管 标本。

Conclusions : Intraoperatively the primary condition assured success of the surgery is to increase the movable activity of greater palatine vascular nerve and reconstruct soft palate muscular circle .

结论：过宽腭裂修复手术中，增大腭大 血管神经束的游离度，重建软腭肌 环是保证手术成功的首要条件。