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    • 2. 发明申请
    • Segmenting infarct in diffusion-weighted imaging volume
    • 扩散加权成像体积分割梗死
    • US20100231216A1
    • 2010-09-16
    • US12311484
    • 2006-10-03
    • Bhanu Prakash K.N.Varsha GuptaWieslaw Lucjan Nowinski
    • Bhanu Prakash K.N.Varsha GuptaWieslaw Lucjan Nowinski
    • G01R33/48
    • G06T7/11G06T7/136G06T2207/10092G06T2207/20104G06T2207/30016G06T2207/30101
    • Methods (2900), apparatuses (3000), and computer program products for segmenting an infarct in a diffusion-weighted imaging (DWI) volume are disclosed. A Region of Interest in at least one slice of the DWI volume is selected (2912). The ROI comprises at least a portion of the slice. A threshold for a minimum size of an infarct region is selected (2916). An energy mask is convolved (2918) with that slice, and the resulting energy image is normalized (2920). The ROI in the convolved energy image is selected (2922). An initial threshold is determined (2924) using a histogram of the ROI of the slice without a background region, and an initial segmentation of the slice is performed (2926). Individual components of the initial segmentation of the slice are labeled (2930). A final threshold is determined (2932) using histograms of labeled components if the initial segmentation, and a final segmentation if the slice is performed (2934) using that threshold.
    • 公开了用于分割扩散加权成像(DWI)体积中的梗塞的方法(2900),装置(3000)和用于分割梗塞的计算机程序产品。 选择DWI卷的至少一个片段中的感兴趣区域(2912)。 ROI包括切片的至少一部分。 选择梗死区域的最小尺寸的阈值(2916)。 能量掩模与该切片卷积(2918),并且所得能量图像被归一化(2920)。 选择卷积能量图像中的ROI(2922)。 使用没有背景区域的切片的ROI的直方图来确定初始阈值(2924),并且执行切片的初始分割(2926)。 片段初始分割的各个成分被标记(2930)。 如果初始分割,则使用标记分量的直方图来确定最终阈值(2932),以及如果使用该阈值执行切片的最终分割(2934)。
    • 3. 发明授权
    • Segmenting infarct in diffusion-weighted imaging volume
    • 扩散加权成像体积分割梗死
    • US08125223B2
    • 2012-02-28
    • US12311484
    • 2006-10-03
    • Bhanu Prakash K.N.Varsha GuptaWieslaw Lucjan Nowinski
    • Bhanu Prakash K.N.Varsha GuptaWieslaw Lucjan Nowinski
    • G01V3/00
    • G06T7/11G06T7/136G06T2207/10092G06T2207/20104G06T2207/30016G06T2207/30101
    • Methods (2900), apparatuses (3000), and computer program products for segmenting an infarct in a diffusion-weighted imaging (DWI) volume are disclosed. A Region of Interest in at least one slice of the DWI volume is selected (2912). The ROI comprises at least a portion of the slice. A threshold for a minimum size of an infarct region is selected (2916). An energy mask is convolved (2918) with that slice, and the resulting energy image is normalized (2920). The ROI in the convolved energy image is selected (2922). An initial threshold is determined (2924) using a histogram of the ROI of the slice without a background region, and an initial segmentation of the slice is performed (2926). Individual components of the initial segmentation of the slice are labeled (2930). A final threshold is determined (2932) using histograms of labeled components if the initial segmentation, and a final segmentation if the slice is performed (2934) using that threshold.
    • 公开了用于分割扩散加权成像(DWI)体积中的梗塞的方法(2900),装置(3000)和用于分割梗塞的计算机程序产品。 选择DWI卷的至少一个片段中的感兴趣区域(2912)。 ROI包括切片的至少一部分。 选择梗死区域的最小尺寸的阈值(2916)。 能量掩模与该切片卷积(2918),并且所得能量图像被归一化(2920)。 选择卷积能量图像中的ROI(2922)。 使用没有背景区域的切片的ROI的直方图来确定初始阈值(2924),并且执行切片的初始分割(2926)。 片段初始分割的各个成分被标记(2930)。 如果初始分割,则使用标记分量的直方图来确定最终阈值(2932),以及如果使用该阈值执行切片的最终分割(2934)。