Development of a 35-MHz piezo-composite ultrasound array for medical imaging
Development of a 35-MHz piezo-composite ultrasound array for medical imaging
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DOI：
10.1109/tuffc.2006.1588408
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发表时间：
2006-01-01
影响因子：
3.6
通讯作者：
Shung, KK
中科院分区：
文献类型：
--
作者：
Cannata, JM;Williams, JA;Shung, KK
本文讨论了64单元35 MHz复合超声基阵的研制。该阵列主要是为眼部成像应用而设计的，其特征在于2-2个复合元件由细粒高密度海军VI型陶瓷机械切割而成。阵列元件以50微米的间距间隔开，通过定制的柔性电路互连，并通过75 μ m的传输线同轴电缆与50 μ m的系统电子设备相匹配。使用圆柱形环氧树脂透镜实现仰角聚焦。一个功能64元件阵列的制造和测试。平均带宽为55%，23 dB的插入损耗，串扰小于-24 dB的测量。使用合成孔径重建算法获取钨丝靶体模的图像。成像测试的结果表明，分辨率轴向超过50 μ m，横向超过100 μ m。
This paper discusses the development of a 64-element 35-MHz composite ultrasonic array. This array was designed primarily for ocular imaging applications, and features 2-2 composite elements mechanically diced out of a fine-grain high-density Navy Type VI ceramic. Array elements were spaced at a 50-micron pitch, interconnected via a custom flexible circuit and matched to the 50-mu m system electronics via a 75-mu m transmission line coaxial cable. Elevation focusing was achieved using a cylindrically shaped epoxy lens. One functional 64-element array was fabricated and tested. Bandwidths averaging 55%, 23-dB insertion loss, and crosstalk less than -24 dB were measured. An image of a tungsten wire target phantom was acquired using a synthetic aperture reconstruction algorithm. The results from this imaging test demonstrate resolution exceeding 50 mu m axially and 100 mu m laterally.