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    • 5. 发明专利
    • Medical image processing apparatus, method, and program
    • 医学图像处理设备,方法和程序
    • JP2012223315A
    • 2012-11-15
    • JP2011092723
    • 2011-04-19
    • Fujifilm Corp富士フイルム株式会社
    • INOUE TSUTOMU
    • A61B6/03G06T1/00
    • G06T7/0012G06T3/0037G06T7/10
    • PROBLEM TO BE SOLVED: To construct graph structures of bronchi in three-dimensional medical images with greater precision.SOLUTION: A continuous region-extracting unit 32 extracts continuous regions having pixel values that correspond to regions of air inside wide bronchi from a three-dimensional medical image in which bronchi are shown and a tree structure-constructing unit 33 constructs a tree structure that corresponds to the continuous regions. Meanwhile, a linear structure-extracting unit 34 extracts multiple linear structures that represent fragments of narrow bronchi by analyzing local dark-light structures near each point in the three-dimensional medical image. A tree structure-reconstructing unit 35 reconstructs a graph structure that represents the bronchi as a whole by connecting nodes that configure graph structures of wide bronchi with nodes that represent linear structures of narrow bronchi. When so doing, different cost functions are used in the sections where wide bronchial nodes and narrow bronchial linear structure nodes are connected and sections where linear structure nodes are connected to each other, and the cost function of the former sections is defined so that the sections with smaller changes in pixel value are more easily connected.
    • 要解决的问题:以更精确的方式构建三维医学图像中支气管的图形结构。 解决方案:连续区域提取单元32从显示支气管的三维医学图像中提取具有与宽支气管内的空气区域相对应的像素值的连续区域,并且树结构构造单元33构建树 结构对应于连续区域。 同时,线性结构提取单元34通过分析三维医学图像中每个点附近的局部暗光结构来提取表示窄支气管碎片的多个线性结构。 树结构重建单元35通过连接构成广泛支气管的图形结构的节点来重建表示支气管的图形结构,其中节点表示窄支气管的线性结构。 当这样做时,在宽支气管节点和狭窄的支气管线性结构节点连接的部分和线性结构节点彼此连接的部分中使用不同的成本函数,并且定义前面部分的成本函数, 像素值的变化较小,更容易连接。 版权所有(C)2013,JPO&INPIT