Automatic monitoring system for artificial hearts using self-organizing map

Xian zheng Wang, Makoto Yoshizawa, Akira Tanaka, Ken ichi Abe, Hiroshi Takeda, Tomoyuki Yambe, Shin ichi Nitta, Kou Imachi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The overall goal of our research is an automatic, real-time and on-line monitoring system of artificial hearts. In this task, it is very important to automatically detect and classify abnormalities of the artificial heart control system and the recipient's circulatory system. The self-organizing map was applied to the pattern recognition of aortic pressure (AOP) which is considered to mostly represent the state of the circulatory system. The AOP signal data were fed to a Self-Organizing Map (SOM) beat by beat. During the unsupervised learning process the SOM units organize in such a way that similar AOP beat patterns were represented in particular areas of the SOM. The map location areas of the AOP signals in the different states of the circulatory system were also different. The results of visual examination revealed that the states of circulatory system were distinguished well by the map. It is expected that a map can be trained off-line with a large database and then used for on-line monitoring and analysis for artificial hearts.

Original languageEnglish
Title of host publicationAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
PublisherIEEE
Number of pages1
ISBN (Print)0780356756
Publication statusPublished - 1999 Dec 1
EventProceedings of the 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and the 1999 Fall Meeting of the Biomedical Engineering Society (1st Joint BMES / EMBS) - Atlanta, GA, USA
Duration: 1999 Oct 131999 Oct 16

Publication series

NameAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume2
ISSN (Print)0589-1019

Other

OtherProceedings of the 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and the 1999 Fall Meeting of the Biomedical Engineering Society (1st Joint BMES / EMBS)
CityAtlanta, GA, USA
Period99/10/1399/10/16

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

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