Papers Published

1. Lee, W. and Idriss, S.F. and Wolf, P.D. and Smith, S.W., Dual lumen transducer probes for real-time 3-D interventional cardiac ultrasound, Ultrasound Med. Biol. (USA), vol. 29 no. 9 , pp. 1297 - 304 [S0301-5629(03)00952-9] .
   (last updated on 2007/04/15)

   Abstract:
   We have developed dual lumen probes incorporating a forward-viewing matrix array transducer with an integrated working lumen for delivery of tools in real-time 3-D (RT3-D) interventional echocardiography. The probes are of 14 Fr and 22 Fr sizes, with 112 channel 2-D arrays operating at 5 MHz. We obtained images of cardiac anatomy and simultaneous interventional device delivery with an in vivo sheep model, including: manipulation of a 0.36-mm diameter guidewire into the coronary sinus, guidance of a transseptal puncture using a 1,2-mm diameter Brockenbrough needle, and guidance of a right ventricular biopsy using 3 Fr biopsy forceps. We have also incorporated the 22 Fr probe within a 6-mm surgical trocar to obtain apical four-chamber ultrasound (US) scans from a subcostal position. Combining the imaging catheter with a working lumen in a single device may simplify cardiac interventional procedures by allowing clinicians to easily visualize cardiac structures and simultaneously direct interventional tools in a RT3-D image

   Keywords:
   biological tissues;biomedical transducers;echocardiography;medical image processing;surgery;ultrasonic imaging;ultrasonic transducer arrays;