Real-time 3D Laparoscopic ultrasonography
Real-time 3D Laparoscopic ultrasonography
复制标题
DOI：
10.1177/016173460502700301
复制
发表时间：
2005-07-01
影响因子：
2.3
通讯作者：
Smith, SW
中科院分区：
文献类型：
--
作者：
Light, ED;Idriss, SF;Smith, SW
我们先前已经描述了用于包括真实的3D经胸成像、真实的体积心内超声心动图（ICE）、真实的3D血管内超声（IVUS）成像和真实的3D经食管超声心动图（TEE）的应用的高达10 MHz操作的2D阵列超声换能器。我们最近建立了一对二维阵列换能器的真实的时间三维腹腔镜超声检查（3DLUS）。这些探头预期在微创手术期间放置在穿刺器下方。第一个是前视5 MHz，11 x19阵列，具有198个操作元件。它是建立在一个8层多层柔性电路。元件间间距为0.20 mm，产生2.2 mm x 3.8 mm的孔径。完成的传感器为10.2 mm，包括2 mm工具端口。平均测量中心频率为4.5 MHz，-6 dB带宽范围为15%至30%。包括戈尔MicroFlat电缆的50 Ω插入损耗为-81.2 dB。第二个换能器是具有504个操作元件的7 MHz、36 × 36阵列。它是建立在一个10层多层柔性电路。该传感器为前视配置，元件间距为0.18 mm。总孔径尺寸为6.48 mm x 6.48 mm。该换能器的中心频率为7.2MHz，-6dB带宽为18%~ 33%。50 Ω插入损耗为-79.5 dB，包括戈尔MicroFlat电缆。已经制作了犬心脏的实时体内3D图像，包括从胸骨下进入的心尖4腔视图，其中第一个换能器用于监测心脏功能。此外，我们制作了真实的三维渲染图像的右肺静脉从右胸骨旁接入与第二个换能器，这将是有价值的指导心脏消融导管治疗房颤。
We have previously described 2D array ultrasound transducers operating up to 10 MHz for applications including real time 3D transthoracic imaging, real time volumetric intracardiac echocardiography (ICE), real time 3D intravascular ultrasound (IVUS) imaging, and real time 3D transesophageal echocardiography(TEE). We have recently built a pair of 2D array transducers for real time 3D laparoscopic ultrasonography(3DLUS). These transducers are intended to be placed down a trocar during minimally invasive surgery. The first is a forward viewing 5 MHz, 11x19 array with 198 operating elements. It was built on an 8 layer muitilayer flex circuit. The interelement spacing is 0.20 mm yielding an aperture that is 2.2 mm x 3.8 mm. The O.D. of the completed transducer is 10.2 mm and includes a 2 mm tool port. The average measured center frequency is 4.5 MHz, and the -6 dB bandwidth ranges from 15% to 30%. The 50 Omega insertion loss, including Gore MicroFlat cabling, is -81.2 dB, The second transducer is a 7 MHz, 36x36 array with 504 operating elements. It was built upon a 10 layer multilayer flex circuit. This transducer is in the forward viewing configuration and the interelement spacing is 0.18 mm. The total aperture size is 6,48 mm x 6.48 mm. The O.D. of the completed transducer is 11.4 mm. The average measured center frequency is 7.2 MHz, and the -6 dB bandwidth ranges from 18% to 33%. The 50 Omega insertion loss is -79.5 dB, including Gore MicroFlat cable. Real-time in vivo 3D images of canine hearts have been made including an apical 4-chamber view from a substernal access with the first transducer to monitor cardiac function. In addition, we produced real time 3D rendered images of the right pulmonary veins from a right parasternal access with the second transducer, which would be valuable in the guidance of cardiac ablation catheters for treatment of atrial fibrillation.