2024-03-28T08:51:56Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00002739
2022-12-15T03:35:58Z
423:424:425
453:454
自然観測法によるカテーテル式血圧計の圧波形補正
自然観測法によるカテーテル式血圧計の圧波形補正
Correction of Pressure Waveforms in a Catheter Manometer System by Natural Observation Method
斉藤, 義明
堀, 潤一
木竜, 徹
牧野, 秀夫
田村, 康二
吉崎, 哲世
飯島, 泰蔵
Pressure waveforms obtained by catheter manometer systems are often distorted by resonance of catheter and so on. Corrections by Fourier analysis, low pass filter and digital signal proccessing have been reported, but they have never been put to practical use. We paid attention to the transfer function of catheter transducer systems and made a trial system that correct the distortion by natural observation method. This system increases the bandwidth in frequency domain and reduce the ringing in time domain. Advantages of this system are simple composition, a small number of adjusting points and real time performance without modifying the catheter or transducer. In an animal experiment, we corrected by our trial system the output waveforms recorded by a conventional catheter manometer system and compared these corrected output waveforms with catheter-tip manometer waveforms which are relatively distortionless. As a result, we could obtain less distorted pressure waveforms in left-ventricle and aorta and distinctly confirm dicrotic notch in aortic pressure waveforms.
日本ME学会
1988-09
jpn
journal article
http://hdl.handle.net/10191/20188
https://niigata-u.repo.nii.ac.jp/records/2739
AN00016981
00213292
医用電子と生体工学
医用電子と生体工学
26
3
133
138
https://niigata-u.repo.nii.ac.jp/record/2739/files/26_3_133-138.pdf
application/pdf
771.6 kB
2019-07-29