학술논문
Multiple feature acoustic classification of BSCC artificial heart valves
Document Type
Conference
Author
Source
Proceedings of IEEE Symposium on Computer-Based Medical Systems (CBMS) Computer-based medical systems Computer-Based Medical Systems, 1994., Proceedings 1994 IEEE Seventh Symposium on. :125-130 1994
Subject
Language
Abstract
Mechanical prosthetic heart valves generate sounds which may be used to infer their structural status. Acoustical signal processing methods have been applied to the Bjork-Shiley Convexo-Concave (BSCC) heart valve, which in rare instances may experience outlet strut fracture. An objective classifier has been developed that isolates and characterizes a frequency component shown to be associated with the intact BSCC valve. Analysis of recordings from 24 confirmed clinical cases resulted in a 93% specificity (13 of 14 properly classified as intact) and 100% sensitivity (10 of 10 properly classified as structurally altered).ETX