Real-time three-dimensional intracardiac echocardiography

Light, Edward D.; Idriss, Salim F.; Wolf, Patrick D.; Smith, Stephen W.

doi:10.1016/s0301-5629(01)00421-5

Cited by 59 publications

(34 citation statements)

References 12 publications

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“…the C-scan planes, the system also displays real time 3D rendered images. 12,14,15 The pyramid angle is typically set at 65 degrees, but we have modified the system to produce up to a 120 degree pyramidal scan for a larger field of view up close to the transducer. 16 Transducer Design For the 5 MHz laparoscope, we adapted a design we have previously used for a side viewing intracardiac catheter transducer.…”

Section: Volumetric Scanner Systemmentioning

confidence: 99%

Real-Time 3D Laparoscopic Ultrasonography

et al. 2005

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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. We have recently built a pair of 2D array transducers for real time 3D laparoscopic ultrasonography (3D LUS), and real time 3D transesophageal echocardiography (TEE). These transducers are intended to be placed down a trocar during minimally invasive surgery. The first is a forward viewing 5 MHz, 11 x 19 array with 198 operating elements. It was built on an 8 layer multi-layer 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 Ohm insertion loss, including Gore MicroFlat cabling, is -81.2 dB. The second transducer is a 7 MHz, 36 x 36 array with 504 operating elements. It was built upon a 10 layer multi-layer 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 Ohm 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.

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Section: Volumetric Scanner Systemmentioning

confidence: 99%

Real-Time 3D Laparoscopic Ultrasonography

et al. 2005

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“…We previously described a 12 Fr, 64 channel sideviewing catheter 2-D array operating at 5 MHz [20], [22]- [24], a 9 Fr, 70 channel side-viewing catheter 2-D array operating at 7 MHz [25], and dual-lumen, forward-viewing 2-D array probes operating at 5 MHz [26]. In this paper, we describe advances toward smaller, more clinically useful catheter 2-D arrays with increased channel counts.…”

Section: Introductionmentioning

confidence: 99%

“…In RT3D intracardiac imaging, the 2-D array transducer is miniaturized and mounted in a catheter, enabling the 3-D viewing of cardiac structures and interventional catheter devices in cross sectional and en face views [20]. Within the acquired volumes, multiple real-time B, C, or inclined planes can be displayed, as well as real time, 3-D-rendered images [21].…”

Section: Introductionmentioning

confidence: 99%

A miniaturized catheter 2-D array for real-time, 3-D intracardiac echocardiography

Lee

Idriss

Wolf

et al. 2004

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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“…Transthoracic echocardiographic studies using RT3D have been effective for applications such as monitoring left ventricular function [10], detecting perfusion defects [11], and evaluating congenital abnormalities [12]. More recently, catheter-based transducers with 2-D arrays have been developed for intracardiac echocardiography [13]. These devices have been fabricated into 7F catheters with as many as 112 channels [14], successfully merging functional intracorporeal size with clinically relevant resolution for RT3D.…”

Section: Introductionmentioning

confidence: 99%

3-D ultrasound guidance of surgical robotics: a feasibility study

Pua

Fronheiser

Noble

et al. 2006

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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Abstract-Laparoscopic ultrasound has seen increased use as a surgical aide in general, gynecological, and urological procedures. The application of real-time, threedimensional (RT3D) ultrasound to these laparoscopic procedures may increase information available to the surgeon and serve as an additional intraoperative guidance tool. The integration of RT3D with recent advances in robotic surgery also can increase automation and ease of use. In this study, a 1-cm diameter probe for RT3D has been used laparoscopically for in vivo imaging of a canine. The probe, which operates at 5 MHz, was used to image the spleen, liver, and gall bladder as well as to guide surgical instruments. Furthermore, the three-dimensional (3-D) measurement system of the volumetric scanner used with this probe was tested as a guidance mechanism for a robotic linear motion system in order to simulate the feasibility of RT3D/robotic surgery integration. Using images acquired with the 3-D laparoscopic ultrasound device, coordinates were acquired by the scanner and used to direct a robotically controlled needle toward desired in vitro targets as well as targets in a post-mortem canine. The rms error for these measurements was 1.34 mm using optical alignment and 0.76 mm using ultrasound alignment.

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Real-time three-dimensional intracardiac echocardiography

Cited by 59 publications

References 12 publications

Real-Time 3D Laparoscopic Ultrasonography

Real-Time 3D Laparoscopic Ultrasonography

A miniaturized catheter 2-D array for real-time, 3-D intracardiac echocardiography

3-D ultrasound guidance of surgical robotics: a feasibility study

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