| Progress in ring array transducers for real-time 3D ultrasound guidance of cardiac interventional devices. | |
| | |
MedLine Citation:
|
PMID: 21842583 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
As a treatment for aortic stenosis, several companies have recently introduced prosthetic heart valves designed to be deployed through a catheter using an intravenous or transapical approach. This procedure can either take the place of open heart surgery with some ofthe devices or delay it with others. Real-time 3D ultrasound could enable continuous monitoring of these structures before, during and after deployment. We have developed a 2D ring array integrated with a 30 French catheter that is used for transapical prosthetic heart valve implantation. The transducer array was built using three 46 cm long flex circuits from MicroConnex (Snoqualmie, WA) which terminate in an interconnect that plugs directly into our system cable; thus, no cable soldering is required. This transducer consists of 210 elements at 0.157 mm interelement spacing and operates at 5 MHz. Average measured element bandwidth was 26% and average round-trip 50 ohm insertion loss was -58.1 dB after correcting for diffractive losses. The transducer was wrapped around the 1 cm diameter lumen of a heart-valve deployment catheter. Prosthetic heart valve images were obtained in water-tank studies. |
| | |
Authors:
|
Edward D Light; Victor Lieu; Stephen W Smith |
Related Documents
:
|
8444003 - Spontaneous secure reimplantation of a dislodged pacemaker electrode onto the right ven... 1070223 - Experiences with a new myocardial electrode for permanent cardiac pacing. 612403 - Computed tomography of cerebral infarction: hemorrhagic, contrast enhancement, and time... |
Publication Detail:
|
Type: Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
|
Title: Ultrasonic imaging Volume: 33 ISSN: 0161-7346 ISO Abbreviation: Ultrason Imaging Publication Date: 2011 Jul |
Date Detail:
|
Created Date: 2011-08-16 Completed Date: 2011-09-27 Revised Date: 2013-05-23 |
Medline Journal Info:
|
Nlm Unique ID: 7909167 Medline TA: Ultrason Imaging Country: United States |
Other Details:
|
Languages: eng Pagination: 197-204 Citation Subset: IM |
Affiliation:
|
Department of Biomedical Engineering Duke University Durham, NC 27708, USA. edl@duke.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Aortic Valve Stenosis
/
therapy* Cardiac Catheterization Echocardiography, Three-Dimensional / instrumentation* Equipment Design Heart Valve Prosthesis* Heart Valve Prosthesis Implantation / instrumentation, methods* Humans Transducers* Ultrasonography, Interventional / instrumentation* |
| Grant Support | |
ID/Acronym/Agency:
|
HL089507/HL/NHLBI NIH HHS; R01 HL089507-04/HL/NHLBI NIH HHS; R01 HL089507-05/HL/NHLBI NIH HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Ultrafast photoacoustic imaging and its application to real-time 3D imaging with improved focusing.
Next Document: 7.5 MHz dual-layer transducer array for 3-D rectilinear imaging.