NDLI: Calibration of ultrasonic hydrophone probes in the frequency range from 250 kHz to 1 MHz

Content Provider	IEEE Xplore Digital Library
Author	Umchid, S.
Copyright Year	2015
Description	Author affiliation: Dept. of Ind. Phys. & Med. Instrum., King Mongkut's Univ. of Technol., Bangkok, Thailand (Umchid, S.)
Abstract	Calibration of ultrasonic hydrophone probes in the frequency range from 250 kHz to 1 MHz is required to sufficiently assess the peak rarefactional pressure (pr) and the Mechanical Index (MI) of medical ultrasound imaging devices. However, the ultrasonic hydrophone calibration in this low frequency is barely conducted. Therefore, the objective of this research was to develop a calibration technique for ultrasonic hydrophone probes in the frequency range from 250 kHz to 1 MHz. Two ultrasonic hydrophone probes, one membrane hydrophone and one needle hydrophone, were calibrated using a substitution method combined with time-delay spectrometry (TDS). The calibration results are presented in term of end-of-cable voltage sensitivity as a function of frequency. The calibration data show that the membrane hydrophone exhibit a very flat frequency response, to within ±1 dB for the entire investigated frequency range, whereas the needle hydrophone demonstrates a relative large variations in sensitivity of about 5 dB. These results are in good agreement with the limited data previously reported. Therefore, the substitution calibration technique with Time Delay Spectrometry (TDS) is capable of calibrating the ultrasonic hydrophone probes in the frequency range from 250 kHz to 1 MHz.
Starting Page	1
Ending Page	4
File Size	353035
Page Count	4
File Format	PDF
e-ISBN	9781467391580
DOI	10.1109/BMEiCON.2015.7399558
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-11-25
Publisher Place	Thailand
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Time Delay Spectrometry Ultrasonic imaging Sensitivity Hydrophone Calibration Sonar equipment Acoustics Calibration Probes Biomedical imaging Ultrasound Metrology Ultrasonic Hydrophone Probes
Content Type	Text
Resource Type	Article

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