Title :
Analysis of four methods for temporal displacements measurement of ultrasonic echoes for their application on temperature estimation
Author :
Bazán, I. ; Vera, A. ; Leija, L. ; Ramos, A.
Author_Institution :
Electr. Eng. Dept., CINVESTAV-IPN, Mexico City, Mexico
Abstract :
In this work an analysis of four methods for temporal displacement measurement of ultrasonic echoes is presented, to determine their precision and sensibility to different noise levels, with the main objective to evaluate their potential application on non invasive internal temperature estimation. Procedures and methodologies to perform this analysis are described, using different ultrasonic signals acquired, in the hyperthermia temperature range (25 - 50degC), from biologic media that mimic soft tissue. Finally obtained results with each method are shown and a conclusion about methods performance is exposed.
Keywords :
biological tissues; biomedical ultrasonics; hyperthermia; medical signal processing; time measurement; biologic media; hyperthermia temperature; noninvasive internal temperature estimation; soft tissue; temperature 25 degC to 50 degC; temporal displacement measurement; ultrasonic echoes; ultrasonic signals; Biological tissues; Couplings; Delay; Displacement measurement; Medical services; Phase measurement; Signal analysis; Temperature measurement; Temperature sensors; Ultrasonic variables measurement; not invasive temperature estimation; phase displacement; temporal displacement; ultrasonic;
Conference_Titel :
Health Care Exchanges, 2009. PAHCE 2009. Pan American
Conference_Location :
Mexico City
Print_ISBN :
978-1-4244-3668-2
Electronic_ISBN :
978-1-4244-3669-9
DOI :
10.1109/PAHCE.2009.5158376
