NDLI: Model to estimate the sound velocity in a circular wave guide in a through transmission measurement setup from multiple receivers

Content Provider	IEEE Xplore Digital Library
Author	Rohde, K. Barkmann, R. Daugschies, M. Gluer, C.-C. Schmitz, G.
Copyright Year	2015
Description	Author affiliation: Sect. Biomed. Imaging, Univ. Hosp. Schleswig-Holstein, Kiel, Germany (Rohde, K.; Barkmann, R.; Daugschies, M.; Gluer, C.-C.) \|\| Med. Eng., Bochum Univ., Bochum, Germany (Schmitz, G.)
Abstract	Quantitative ultrasound (QUS) at the femoral neck has to be conducted in a through transmission measurement setup. In this context, the Time Of Flight of the First Arriving Signal $(TOF_{FAS})$ results from a wave being guided along the cortical shell and is supposed to be influenced by the elastic properties of the femoral neck cortex. In such a contact free measurement setup, the $TOF_{FAS}$ results from a combination of pathways through water and bone of unknown portions. It would be beneficial to estimate the Speed of Sound (SOS) in the wave guide from $TOF_{FAS}$ measurements without knowing the geometry of the wave guide. We developed a simple model based on a circular wave guide with unknown radius, location and SOS, but known positions of emitter and receiver array. An optimization routine was implemented to find the SOS in the circular wave guide from 24 $TOF_{FAS}$ obtained from the receiver array starting from an initial guess. A first test at different working points revealed that the outcome of the optimization routine did not depend on the initial guess at hand. Furthermore, noisy input led to acceptable errors in SOS. For the application on non-circular wave guides it is necessary to improve the model.
Starting Page	1
Ending Page	4
File Size	594849
Page Count	4
File Format	PDF
ISBN	9781479987634
DOI	10.1109/ESUCB.2015.7169917
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-06-10
Publisher Place	Greece
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Estimation of sound velocity Through transmission measurement Receivers Brain modeling Multiple receivers Optimization
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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