Instrument and Method for Forming Three-Dimensional Ultrasound Images of the Brea

乳腺X线摄影用高清晰度超声 摘要 我们建议开发基于半球形合成孔径的高清晰度超声（HD-US） 和反向散射的声波这种配置将产生直接的三维地图， 乳腺组织的超声反射率，并将显示更高的信噪比，减少斑点， 与基于线性或曲面采样的超声阵列相比，空间分辨率更高 窍 我们的原型半球形阵列由四个叉指子阵列组成，每个子阵列具有128个离散的 元素目前，该阵列被用于使用一个微处理器捕获整个乳房的3D光声图像。 螺旋扫描策略，以增加视野，足以执行全乳房筛查- 光声乳腺摄影（PAM）。 在本工作的第一阶段，我们将增加一个多路复用脉冲发生器，脉冲序列器和T/R开关，以捕获 超声反射率数据足以使用相同的重建形成3D超声图像 PAM中使用的策略。完整的3D图像采集将需要3.4分钟，与目前用于 PAM数据收集。空间分辨率和低对比度可检测性将使用 拟人幻象 在第二阶段，HD-US将与PAM相结合，以产生软组织的3D图像， 微钙化3D图像将与血红蛋白的PAM图像共配准 分布在乳房中使用一个单一的半球形换能器阵列。

High Definition Ultrasound for Mammography Abstract We propose to develop High Definition Ultrasound (HD-US) based on a hemispherical synthetic aperture and backscattered sonic waves. This configuration will produce direct three-dimensional maps of ultrasound reflectivity of breast tissues, and will display higher signal-to-noise, reduced speckle and greater spatial resolution compared to ultrasound arrays based on linear or curved planar sampling apertures. Our prototype hemispherical array consists of four interdigitated sub-arrays, each having 128 discrete elements. Currently, this array is used to capture 3D photoacoustic images of the whole breast using a spiral scanning strategy to increase the field of view sufficiently to perform whole-breast screening - PhotoAcoustic Mammography (PAM). In Phase I of this work, we will add a multiplexed pulser, pulse sequencer and T/R switches to capture ultrasound reflectivity data sufficient to form a 3D ultrasound image using the same reconstruction strategy used in PAM. Full 3D image acquisition will take 3.4 minutes, the same as currently used for PAM data collection. Spatial resolution and low contrast detectability will be quantified using anthropomorphic phantoms. In Phase II, HD-US will be combined with PAM to produce 3D images of soft tissue and microcalcifications. The 3D images will be co-registered with the PAM images of hemoglobin distribution in the breast using a single hemispherical transducer array.