Novel methods for detecting fractures in prosthetic heart valves

S. C. Chan; R. Clifford; S. Majumdar; N. Nair; S. Ramakrishnan; Y. Li; P. Ramuhalli; L. Udpa; S. S. Udpa

doi:10.1784/insi.47.1.15.56928

Novel methods for detecting fractures in prosthetic heart valves

S. C. Chan, R. Clifford, S. Majumdar, N. Nair, S. Ramakrishnan, Y. Li, P. Ramuhalli, L. Udpa, S. S. Udpa

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

This paper describes the use of two simple electromagnetic methods for detecting strut fractures in prosthetic heart valves The first method involves immersing the heart valve in a uniform time-varying electromagnetic field and measuring the perturbation of the field in regions proximate to the strut. In vitro tests done to date indicate that the method is capable of discriminating between intact and fractured struts. The second method that is currently being investigated involves the use of electromagnetic-acoustic transduction methods for exciting the resonant modes of the outlet strut. Differences between the frequencies associated with the resonant modes of intact and fractured struts are exploited to diagnose the state of the valve.

Original language	English
Pages (from-to)	15-19
Number of pages	5
Journal	Insight: Non-Destructive Testing and Condition Monitoring
Volume	47
Issue number	1
DOIs	https://doi.org/10.1784/insi.47.1.15.56928
State	Published - Jan 2005
Externally published	Yes

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AU - Li, Y.

AU - Ramuhalli, P.

AU - Udpa, L.

AU - Udpa, S. S.

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AB - This paper describes the use of two simple electromagnetic methods for detecting strut fractures in prosthetic heart valves The first method involves immersing the heart valve in a uniform time-varying electromagnetic field and measuring the perturbation of the field in regions proximate to the strut. In vitro tests done to date indicate that the method is capable of discriminating between intact and fractured struts. The second method that is currently being investigated involves the use of electromagnetic-acoustic transduction methods for exciting the resonant modes of the outlet strut. Differences between the frequencies associated with the resonant modes of intact and fractured struts are exploited to diagnose the state of the valve.

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Novel methods for detecting fractures in prosthetic heart valves

Abstract

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