CAJ | 학술논문

在乳腺癌放射治疗过程中，乳腺腺体分割的准确与否直接关系到患者的治疗效果，提出了一种从粗到细的乳腺腺体图像分割方法。首先利用形态学重构滤波器去除图像中的细小毛刺和不规则边缘，避免产生新边界和边界偏移；然后通过面积标记乳腺腺体，采用强制最小技术修正梯度图像并进行分水岭变换，实现乳腺腺体的粗分割；通过在分水岭脊线上人工选择种子点形成的曲线作为Snake模型的初始轮廓来动态逼近目标的真实边缘，实现乳腺腺体的细分割。实验结果表明，该方法对乳腺腺体的分割具有较高的准确性。
재유선암방사치료과정중，유선선체분할적준학여부직접관계도환자적치료효과，제출료일충종조도세적유선선체도상분할방법。수선이용형태학중구려파기거제도상중적세소모자화불규칙변연，피면산생신변계화변계편이；연후통과면적표기유선선체，채용강제최소기술수정제도도상병진행분수령변환，실현유선선체적조분할；통과재분수령척선상인공선택충자점형성적곡선작위Snake모형적초시륜곽래동태핍근목표적진실변연，실현유선선체적세분할。실험결과표명，해방법대유선선체적분할구유교고적준학성。
In the process of breast cancer radiotherapy, the accuracy of mammary gland segmentation is directly related to the effectiveness of patient’s treatment. A coarse-to-fine strategy is proposed for breast gland segmentation. Firstly, morpho-logical reconstruction filter is used to remove image’s small burrs and irregular edges so as to avert new boundaries and boundary migration. The mammary gland is then marked by the area size to differentiate the foreground from the background. After labeling, minima imposition is applied to modify the gradient image. Finally, standard watershed transform is employed to implement segmentation on the basis of modified gradient image, realizing the coarse segmentation of mammary gland. For the purpose of accomplishing the fine segmentation, the curve formed by selected seed points on the watershed ridge is chosen as the initial contour of the snake model to dynamically approach target’s real edges. Experiments show that this method has higher accuracy for mammary gland segmentation.