Title :
Experimental validation of a method for the simulation of backscatter signals from finite, shaped scatterers
Author :
Sälzle, Martin ; D´hooge, Jan ; Voormolen, Marco M.
Author_Institution :
Dept. of Circulation & Imaging, Norwegian Univ. of Sci. & Technol., Trondheim, Norway
Abstract :
An efficient method for the calculation of backscatter signals from finite, shaped scatterers is presented and validated. Good agreement is shown between the proposed method, theoretical results and measurements obtained from single scatterers. It is also shown that the method will breakdown if the dimensions of the scatterer get significantly larger than half the wave length of the applied ultrasonic field. With an average myocyte length of 120μm, the limits of validity were found to be sufficient to make the method suitable for the modeling of myocardial fiber orientation in the echocardiographic frequency range (2-7MHz).
Keywords :
backscatter; cellular biophysics; echocardiography; ultrasonic scattering; applied ultrasonic field wavelength; backscatter signal calculation; backscatter signal simulation; echocardiography; finite shaped scatterers; frequency 2 MHz to 7 MHz; myocardial fiber orientation; myocyte; scatterer dimensions; size 120 mum; Acoustics; Anisotropic magnetoresistance; Approximation methods; Backscatter; Myocardium; Transducers; Ultrasonic imaging; finite shaped scatterers; myocardial fiber orientation; spatial impulse response; ultrasonic backscatter;
Conference_Titel :
Ultrasonics Symposium (IUS), 2011 IEEE International
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4577-1253-1
DOI :
10.1109/ULTSYM.2011.0536
