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公开(公告)号：US20130018591A1
公开(公告)日：2013-01-17
申请号：US13546191
申请日：2012-07-11
CPC分类号： G01N22/00 , A61B5/0507 , A61B5/4312
摘要： Microwave imaging equipment utilizing an array of antennas operated to collect electromagnetic field information for a material being imaged. Image processing method and apparatus use the discrete dipole approximation (DDA) and drastically reduce the time required to process the measured data and estimate the properties of the material. Prior to interrogating the material, interaction matrices are generated and stored for future DDA calculations. The interaction matrices relate to the interaction between the antennas, the operating frequency, the background medium, and the location of the discretizing dipoles. An initial guess of the material properties is made and the resultant field is estimated. These results are compared to the measured results and incremental changes in the material property are computed. The updated material properties are used to recalculate the field. Comparison of the field to the measured field and updating of the material properties continues until an end criterion is satisfied.
摘要翻译： 微波成像设备利用天线阵列来操作以收集被成像材料的电磁场信息。 图像处理方法和装置使用离散偶极近似（DDA），并大大减少处理测量数据所需的时间并估算材料的性质。 在询问材料之前，产生并存储交互矩阵以用于将来的DDA计算。 相互作用矩阵涉及天线之间的相互作用，工作频率，背景介质以及离散偶极子的位置。 进行材料性质的初始猜测，并估计合成的场。 将这些结果与测量结果进行比较，并计算材料性质的增量变化。 更新的材料属性用于重新计算字段。 将场与测量场的比较以及材料特性的更新持续到满足结束标准为止。
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公开(公告)号：US20110130656A1
公开(公告)日：2011-06-02
申请号：US12627404
申请日：2009-11-30
申请人： Seong-Ho SON , Hyuk-Je KIM , Jong-Moon LEE , Soon-Ik JEON , Pual M. MEANEY , Keith D. PAULSEN , Tomasz M. GRZEGORCZYK
发明人： Seong-Ho SON , Hyuk-Je KIM , Jong-Moon LEE , Soon-Ik JEON , Pual M. MEANEY , Keith D. PAULSEN , Tomasz M. GRZEGORCZYK
IPC分类号： A61B6/00
CPC分类号： A61B5/0507 , A61B5/4312
摘要： Provided are microwave image reconstruction apparatus and method. An apparatus for diagnosing a breast cancer, includes: a plurality of antennas for inserting a breast and configured to transmit and receive the electromagnetic wave; an electromagnetic wave transceiver configured to receive phase and amplitude information of the electromagnetic wave; an initial distribution value provider configured to set an initial dielectric constant and conductivity distribution value for dielectric constant and conductivity of a breast of a patient and in the tank; a first image reconstruction unit configured to transform the amplitude information of the electromagnetic wave through log transform and to obtain a first image by calculating a phase and amplitude information value of electric field generated from the electromagnetic wave; and a second image reconstruction unit configured to transform the first image in a value in a complex number form and to transform values to a second image.
摘要翻译： 提供了微波图像重建装置和方法。 一种用于诊断乳腺癌的装置，包括：用于插入乳房并被配置为发送和接收电磁波的多个天线; 电磁波收发器，被配置为接收电磁波的相位和幅度信息; 初始分布值提供器，其被配置为设置患者的乳房和所述罐中的介电常数和电导率的初始介电常数和电导率分布值; 第一图像重建单元，被配置为通过对数变换来变换电磁波的振幅信息，并且通过计算从电磁波产生的电场的相位和幅度信息值来获得第一图像; 以及第二图像重建单元，被配置为将复数形式的值中的第一图像变换并将值变换为第二图像。
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