A New Method for Evaluation of Cavitation Near Mechanical Heart ValvesSource: Journal of Biomechanical Engineering:;2003:;volume( 125 ):;issue: 005::page 663Author:Peter Johansen
,
Keefe B. Manning
,
John M. Tarbell
,
Arnold A. Fontaine
,
Hans Nygaard
,
Steven Deutsch
DOI: 10.1115/1.1613297Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Evaluation of cavitation in vivo is often based on recordings of high-pass filtered random high-frequency pressure fluctuations. We hypothesized that cavitation signal components are more appropriately assessed by a new method for extraction of random signal components of the pressure signals. We investigated three different valve types and found a high correlation between the two methods (r2:0.8806−0.9887). The new method showed that the cavitation signal could be extracted without a priori knowledge needed for setting the high-pass filter cut off frequency, nor did it introduce bandwidth limitation of the cavitation signal.
keyword(s): Cavitation , Valves , Signals , Pressure AND Heart valve prostheses ,
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| contributor author | Peter Johansen | |
| contributor author | Keefe B. Manning | |
| contributor author | John M. Tarbell | |
| contributor author | Arnold A. Fontaine | |
| contributor author | Hans Nygaard | |
| contributor author | Steven Deutsch | |
| date accessioned | 2017-05-09T00:09:29Z | |
| date available | 2017-05-09T00:09:29Z | |
| date copyright | October, 2003 | |
| date issued | 2003 | |
| identifier issn | 0148-0731 | |
| identifier other | JBENDY-26338#663_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/127946 | |
| description abstract | Evaluation of cavitation in vivo is often based on recordings of high-pass filtered random high-frequency pressure fluctuations. We hypothesized that cavitation signal components are more appropriately assessed by a new method for extraction of random signal components of the pressure signals. We investigated three different valve types and found a high correlation between the two methods (r2:0.8806−0.9887). The new method showed that the cavitation signal could be extracted without a priori knowledge needed for setting the high-pass filter cut off frequency, nor did it introduce bandwidth limitation of the cavitation signal. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | A New Method for Evaluation of Cavitation Near Mechanical Heart Valves | |
| type | Journal Paper | |
| journal volume | 125 | |
| journal issue | 5 | |
| journal title | Journal of Biomechanical Engineering | |
| identifier doi | 10.1115/1.1613297 | |
| journal fristpage | 663 | |
| journal lastpage | 670 | |
| identifier eissn | 1528-8951 | |
| keywords | Cavitation | |
| keywords | Valves | |
| keywords | Signals | |
| keywords | Pressure AND Heart valve prostheses | |
| tree | Journal of Biomechanical Engineering:;2003:;volume( 125 ):;issue: 005 | |
| contenttype | Fulltext |