Dual lumen transducer probes for real-time 3-D interventional cardiac ultrasound.
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.
Lee
Warren
W
Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA. warren.lee@duke.edu
Idriss
Salim F
SF
Wolf
Patrick D
PD
Smith
Stephen W
SW
D000818:Animals; D001706:Biopsy / Q000295:instrumentation / Q000379:methods; D006328:Cardiac Catheterization / Q000295:instrumentation / Q000379:methods; D019560:Echocardiography, Three-Dimensional / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D005240:Feasibility Studies; D023421:Models, Animal; D019047:Phantoms, Imaging; D011677:Punctures / Q000295:instrumentation / Q000379:methods; D012756:Sheep; D014159:Transducers; D018084:Ultrasonography, Interventional / Q000295:instrumentation* / Q000379:methods