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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >A miniaturized catheter 2-D array for real-time, 3-D intracardiac echocardiography
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A miniaturized catheter 2-D array for real-time, 3-D intracardiac echocardiography

机译：小型导管2-D阵列，用于实时3-D心内超声心动图检查

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摘要

The design, fabrication, and characterization of a 112 channel, 5 MHz, two-dimensional (2-D) array transducer constructed on a six layer flexible polyimide interconnect circuit is described. The transducer was mounted in a 7 Fr (2.33 mm outside diameter) catheter for use in real-time intracardiac volumetric imaging. Two transducers were constructed: one with a single silver epoxy matching layer and the other without a matching layer. The center frequency and -6 dB fractional bandwidth of the transducer with a matching layer were 4.9 MHz and 31%, respectively. The 50 Ω pitch-catch insertion loss was 80 dB, and the typical interelement crosstalk was -30 dB. The final element yield was greater than 97% for both transducers. The transducers were used to acquire real-time, 3-D images in an in vivo sheep model. We present in vivo images of cardiac anatomy obtained from within the coronary sinus, including the left and right atria, aorta, coronary arteries, and pulmonary veins. We also present images showing the manipulation of a separate electrophysiological catheter into the coronary sinus.
机译：描述了构造在六层柔性聚酰亚胺互连电路上的112通道5 MHz二维（2-D）阵列换能器的设计，制造和特性。换能器安装在7 Fr（外径2.33 mm）导管中，用于实时心内容积成像。构造了两个传感器：一个具有单个环氧银匹配层，另一个不具有匹配层。具有匹配层的换能器的中心频率和-6 dB的分数带宽分别为4.9 MHz和31％。 50Ω音高插入损耗为80 dB，典型的串扰为-30 dB。两个换能器的最终元件成品率均大于97％。换能器用于在体内绵羊模型中获取实时3D图像。我们提出从冠状窦内获得的心脏解剖结构的体内图像，包括左，右心房，主动脉，冠状动脉和肺静脉。我们还提供了显示将单独的电生理导管插入冠状窦的操作的图像。

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