SCANNER VALIDATION FOR INVERSE SCATTERING BREAST IMAGING

这个项目的目标是展示新的、定量的、 超声、影像技术有助于提高乳腺癌的早期诊断水平。 三维乳房扫描仪操作的计算机模拟和 检查对象、组织样本和整个乳房根治术的实际扫描 乳房切除样本将在实验室机械旋转扫描仪中 搞定了。一维发射换能器阵列和1.5维接收换能器 数组将被用来采集数据，形成直径为339像素的图像 通过胸部的直径为5英寸的圆形横截面。这些 声速和吸声的定量图像将为0.75 mm 空间分辨率。面外散射的影响将降至最低 通过使用垂直发送器和接收器调焦。合成焦点 直径为677像素、空间分辨率为0.28 mm的图像将 使用L.5-D、4 MHz通用发射机/接收器换能器阵列。 探索全电子扫描换能器环的途径 将为患者提供快速成像以消除运动伪影 改装连接到256个小环上的商用临床扫描仪 工作在2.25兆赫的换能器。 建议的商业应用：我们的新一代乳腺癌 扫描仪将提供远远优于目前商业广告的图像 扫描仪。除了创造这个新的市场，这项工作，这些 算法，特别是逆散射，在非 医疗领域：地雷探测、掩埋废物成像、声纳成像和 无损检测(NDT)。

The objective of this project is to demonstrate new, quantitative, ultrasound, imaging techniques for improve early breast cancer diagnosis. Computer simulations of the operation of a 3-D breast scanner and the actual scanning of test objects, tissue samples and a whole breast radical mastectomy sample in a laboratory mechanical rotational scanner will be done. A 1-D transmitting transducer array and a 1.5-D receiving transducer array will be used to collect data to form a 339 pixel diameter images of a 5 inch diameter circular cross section through the breast. These quantitative images of sound speed and absorption will have 0.75 mm spatial resolution. Effects of out of plane scattering will be minimized by the use of vertical transmitter and receiver focusing. Synthetic focus images of 677 pixel diameter, with spatial resolution of 0.28 mm will be made using a l.5-D, 4 MHz common transmitter/receiver transducer array. The path to explore a fully electronic scanned ring of transducers for rapid imaging of patients to remove motion artifacts will be provided by modifying a commercial clinical scanner connected to a small ring of 256 transducers operating at 2.25 MHz. PROPOSED COMMERCIAL APPLICATION: Our new generation of breast cancer scanners will provide images that are far superior to present commercial scanners. In addition to creating this new market, this work, these algorithms, and inverse scattering in particular, has applications in non medical areas: mine detection, buried waste imaging, sonar imaging, and non destructive testing (NDT).