Real-time 3-D ultrasound guidance of interventional devices.
Real-time 3-D ultrasound guidance of interventional devices.
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DOI：
10.1109/tuffc.898
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发表时间：
2008-09
期刊：
影响因子：
--
通讯作者：
Smith SW
中科院分区：
文献类型：
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作者：
Light ED;Angle JF;Smith SW
我们之前已经为许多实时体积成像应用开发了二维阵列传感器。这些应用包括用于经胸成像的频率高达 7 MHz、用于心内超声心动图 (ICE) 的频率高达 15 MHz、用于经食管超声心动图 (TEE) 和颅内成像的频率为 5 MHz，以及用于腹腔镜超声成像 (LUS) 的频率为 7 MHz。现在，我们开发了新一代微型环形阵列换能器，集成到介入设备的导管部署套件中，可实现实时 3D 超声扫描，从而改善微创手术的引导。我们建造了 3 个新的环形传感器。第一个由 54 个工作频率为 5 MHz 的元件组成。典型测量的换能器元件带宽为 25%，50 欧姆往返插入损耗为 -65 dB。平均最近邻串扰为-23.8 dB。第二个是工作频率为 5 MHz 的 108 元件传感器原型。第三个是原型 108 元件环形阵列，换能器中心频率为 8.9 MHz，-6 dB 带宽为 25%。所有传感器均与 Cook Medical, Inc. 腔静脉过滤器部署装置的 8.5 French 导管鞘集成。
We have previously developed 2-D array transducers for many real-time volumetric imaging applications. These applications include transducers operating up to 7 MHz for transthoracic imaging, up to 15 MHz for intracardiac echocardiography (ICE), 5 MHz for transesophageal echocardiography (TEE) and intracranial imaging, and 7 MHz for laparoscopic ultrasound imaging (LUS). Now we have developed a new generation of miniature ring-array transducers integrated into the catheter deployment kits of interventional devices to enable real-time 3-D ultrasound scanning for improved guidance of minimally invasive procedures. We have constructed 3 new ring transducers. The first consists of 54 elements operating at 5 MHz. Typical measured transducer element bandwidth was 25%, and the 50 Ohm round trip insertion loss was −65 dB. Average nearest neighbor cross talk was −23.8 dB. The second is a prototype 108-element transducer operating at 5 MHz. The third is a prototype 108-element ring array with a transducer center frequency of 8.9 MHz and a −6 dB bandwidth of 25%. All transducers were integrated with an 8.5 French catheter sheath of a Cook Medical, Inc. vena cava filter deployment device.