Separation of multipath transmission signals for quantitative ultrasound measurement at bone - A comparison study

For separating multipath transmission signals from quantitative ultrasound measurements at bone several approaches have been proposed in the last years. Here, the performances of the two fastest algorithms are compared, which both estimate the parameters of the transfer functions of the sound paths:...

Full description

Saved in:
Bibliographic Details
Main Authors: Dencks, Stefanie, Schmitz, Georg
Format: Conference Proceeding
Language:English
Subjects:
Algorithm design and analysis
bone
Monte Carlo methods
multipath transmission
Parameter estimation
quantitative ultrasound
signal analysis
Signal to noise ratio
Transfer functions
Ultrasonic imaging
Ultrasonic variables measurement
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:For separating multipath transmission signals from quantitative ultrasound measurements at bone several approaches have been proposed in the last years. Here, the performances of the two fastest algorithms are compared, which both estimate the parameters of the transfer functions of the sound paths: the modified least squares Prony method (MLSP) and the space alternating generalized expectation maximization algorithm (SAGE). It is shown, that for good signal-to-noise ratios (SNR) of 100 dB and broadly overlapping waves the MLSP algorithm yields better results, but with decreasing SNR the robustness to noise of the SAGE algorithm prevails.
ISSN:1051-0117
DOI:10.1109/ULTSYM.2012.0255