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首页> 外文会议>Virtual colonoscopy and abdominal imaging : Computational challenges and clinical opportunities >Colorectal Polyp Segmentation Based on Geodesic Active Contours with a Shape-Prior Model
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Colorectal Polyp Segmentation Based on Geodesic Active Contours with a Shape-Prior Model

机译：基于测地活动轮廓和形状优先模型的结直肠息肉分割

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摘要

Automated polyp segmentation is important both in measuring polyp size and in improving polyp detection performance in CTC. We present a polyp segmentation method that is based on the combination of geodesic active contours and a shape-prior model of polyps. To train the shape model, polyps identified by radiologists are grouped by morphologic characteristics. Each group of polyps is used for building a shape-prior model. Then the geodesic active contours method is employed to segment polyps constrained by this shape-prior model. This method can reliably segment polyp boundaries even where the image contrast is not sufficient to define a boundary between a polyp and its surrounding colon tissue. As a pilot study, we developed one polyp shape-prior model for sessile polyps that are located on a relatively flat colon wall. We use the model to segment similar polyps, and the results are evaluated visually.
机译：自动化的息肉分割在测量息肉大小和改善CTC中的息肉检测性能方面都非常重要。我们提出了一种息肉分割方法，该方法基于测地线活动轮廓线和息肉的形状优先模型的组合。为了训练形状模型，放射科医生根据形态特征对息肉进行分组。每组息肉用于建立形状优先模型。然后，采用测地线主动轮廓法对受此形状先验模型约束的息肉进行分割。即使图像对比度不足以定义息肉及其周围结肠组织之间的边界，该方法也可以可靠地分割息肉边界。作为一项初步研究，我们为位于相对平坦的结肠壁上的无蒂息肉开发了一种息肉形状先验模型。我们使用该模型对相似的息肉进行分割，并对结果进行视觉评估。

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  • 来源
  • 会议地点 Beijing(CN);Beijing(CN);Beijing(CN)
  • 作者

    Haiyong Xu; H. Donald Gage; Pete Santago; Yaorong Ge;

  • 作者单位

    Department of Biomedical Engineering Medical Center Blvd., Winston-Salem, NC 27157, USA,Virginia Tech - Wake Forest University School of Biomedical Engineering and Sciences.Medical Center Blvd., Winston-Salem, NC 27157, USA;

    Department of Radiology Medical Center Blvd., Winston-Salem, NC 27157, USA,Virginia Tech - Wake Forest University School of Biomedical Engineering and Sciences.Medical Center Blvd., Winston-Salem, NC 27157, USA;

    Department of Biomedical Engineering Medical Center Blvd., Winston-Salem, NC 27157, USA,Virginia Tech - Wake Forest University School of Biomedical Engineering and Sciences.Medical Center Blvd., Winston-Salem, NC 27157, USA;

    Department of Biomedical Engineering Medical Center Blvd., Winston-Salem, NC 27157, USA,Virginia Tech - Wake Forest University School of Biomedical Engineering and Sciences.Medical Center Blvd., Winston-Salem, NC 27157, USA;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生物医学工程;在其他方面的应用;
  • 关键词

    CT colonography; polyp segmentation; geodesic active contours;

    机译：CT结肠造影息肉分割测地线活动轮廓;

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