2024-03-28T08:22:45Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00001924
2022-12-15T03:34:45Z
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Improvement of the Time-Domain Response of a Thermodilution Sensor by the Natural Observation System (Special Section on Signal Processing and System Theory)
Improvement of the Time-Domain Response of a Thermodilution Sensor by the Natural Observation System (Special Section on Signal Processing and System Theory)
Hori, Jun'ichi
Saitoh, Yoshiaki
Kiryu, Tohru
copyright@1994 IEICE
本文データは学協会の許諾に基づきCiNiiから複製したものである
When measuring the ejection fraction for the evaluation of the ventricular pumping function by means of the thermodilution technique, the slow response a conventional thermistor has caused it to be considered unsuitable, and fast thermistors have been proposed as an alternative. However, in this paper we propose improving the time-domain response of a conventional thermistor using a signal processing technique composed of a series of first-order high-pass filters which is known as the natural observation system. We considered the rise time of the thermistor in response to a step temperature change to effect correction for the measurement of the ejection fraction. The coefficients of the natural observation system were calculated by minimizing the square error between the step-response signal of the thermistor and the band-limited reference signal. In an experiment using a model ventricle, the thermodilution curve obtained from a conventional thermistor was improved using the proposed technique, thus enabling successful measurement of the ejection fraction of the ventricles.
電子情報通信学会
1994-05
eng
journal article
http://hdl.handle.net/10191/20222
https://niigata-u.repo.nii.ac.jp/records/1924
http://www.ieice.org/jpn/trans_online/index.html
http://ci.nii.ac.jp/naid/110003215808
AA10826239
09168508
IEICE transactions on fundamentals of electronics, communications and computer sciences
IEICE transactions on fundamentals of electronics, communications and computer sciences
E77-A
5
784
791
https://niigata-u.repo.nii.ac.jp/record/1924/files/110003215808.pdf
application/pdf
989.2 kB
2019-07-29