QUANTITATIVE EVALUATION OF FRACTIONAL REGIONAL VENTILATION USING FOUR-DIMENSIONAL COMPUTED TOMOGRAPHY
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    发明申请
    QUANTITATIVE EVALUATION OF FRACTIONAL REGIONAL VENTILATION USING FOUR-DIMENSIONAL COMPUTED TOMOGRAPHY 审中-公开
    使用四维计算机图像分类区域通气的定量评估

    公开(公告)号:US20130303899A1

    公开(公告)日:2013-11-14

    申请号:US13894314

    申请日:2013-05-14

    IPC分类号: A61B6/00

    摘要: Methods and systems for determining fractional regional ventilation are disclosed. A method includes obtaining first and second lung image data indicative of a first phase and a second phase of a respiratory cycle, respectively, determining an apparent mass ratio k based on the first lung image data and the second lung image data, determining first and second spatially matched lung image data, each including N voxels, based on the first lung image data and the second lung image data, and determining at least one fractional regional ventilation value (FRV value), in accordance with a first equation FRV(n)=(k·ρ2_n−ρ1_n)/ρ1_n. The value of n is a voxel index, ρ1_n is indicative of a density of a voxel n of the first spatially matched lung image data, and ρ2_n is indicative of a density of a voxel n of the second spatially matched lung image data.

    摘要翻译: 公开了确定分区式通风的方法和系统。 一种方法包括分别获得指示呼吸周期的第一阶段和第二阶段的第一和第二肺图像数据,基于第一肺图像数据和第二肺图像数据确定视在质量比k,确定第一和第二 基于第一肺图像数据和第二肺图像数据,并且根据第一等式FRV(n)= 1确定至少一个分数区域通气量值(FRV值),确定空间匹配的肺图像数据,每个包括N个体素 (k·rho2_n-rho1_n)/ rho1_n。 n的值是体元索引,rho1_n表示第一空间匹配肺图像数据的体素n的密度,并且rho2_n表示第二空间匹配肺图像数据的体素n的密度。