Progress in Two-Dimensional Arrays for Real-Time Volumetric Imaging
Progress in Two-Dimensional Arrays for Real-Time Volumetric Imaging
复制标题
实时体积成像二维阵列的进展
DOI：
10.1177/016173469802000101
复制
发表时间：
1998
影响因子：
2.3
通讯作者：
Stephen W. Smith
中科院分区：
文献类型：
--
作者：
E. Light;R. E. Davidsen;Jason O. Fiering;T. A. Hruschka;Stephen W. Smith
描述了用于实时体积成像的二维阵列换能器的设计、制造和评价。我们前面描述的换能器在低于3 MHz的频率下运行，由于连接到换能器手柄时使用的互连方案，对操作员来说很不方便。使用新的连接技术开发了几种新的传感器。用256个发射单元和256个接收单元制作了一个40×40=1600个单元、3.5 MHz的阵列。利用248个发射单元和256个接收单元构成了一个60×60=3,600个单元的5.0 MHz阵列。用256个发射单元和208个接收单元制作了一个80×80=6,400个单元，2.5 MHz的阵列。还研制了用于心内导管容积扫描的二维换能器阵列、10×10=100单元5.0 MHz前视阵列和11×13=143单元5.0 MHz侧扫阵列。不同阵列的−6分贝分数带宽在50%~63%之间变化，所有换能器的50Ω插入损耗约为−分贝。这些传感器被用来使用杜克大学实时体积成像系统在体模和活体中生成实时体积图像，该系统能够在金字塔体积内生成任意角度和深度的多个平面。
The design, fabrication, and evaluation of two dimensional array transducers for real-time volumetric imaging are described. The transducers we have previously described operated at frequencies below 3 MHz and were unwieldy to the operator because of the interconnect schemes used in connecting to the transducer handle. Several new transducers have been developed using new connection technology. A 40 × 40 = 1,600 element, 3.5 MHz array was fabricated with 256 transmit and 256 receive elements. A 60 × 60 = 3,600 element 5.0 MHz array was constructed with 248 transmit and 256 receive elements. An 80 × 80 = 6,400 element, 2.5 MHz array was fabricated with 256 transmit and 208 receive elements. 2-D transducer arrays were also developed for volumetric scanning in an intracardiac catheter, a 10 × 10 = 100 element 5.0 MHz forward-looking array and an 11 × 13 = 143 element 5.0 MHz side-scanning array. The −6 dB fractional bandwidths for the different arrays varied from 50% to 63%, and the 50 Ω insertion loss for all the transducers was about −64 dB. The transducers were used to generate real-time volumetric images in phantoms and in vivo using the Duke University real time volumetric imaging system, which is capable of generating multiple planes at any desired angle and depth within the pyramidal volume.