Title :
A soundfield correction method by means of reference phantoms in the investigation of acoustical attenuation and backscattering of human tissue
Author :
Gaertner, T. ; Jenderka, K.-V. ; Heynemann, H. ; Cobet, U.
Author_Institution :
Inst. for Med. Phys. & Biophys., Martin-Luther-Univ., Halle-Wittenberg, Germany
fDate :
31 Oct-3 Nov 1996
Abstract :
Some pathological processes cause alterations of the mechanical properties of the tissue. So the estimation of acoustical attenuation and backscattering can be very useful in diagnosis. If for the calculation the rf data from a b-mode-system are used, several corrections of the device characteristics have to be done firstly. Due to the focusing capabilities of modern ultrasound scanners there is a special distribution of pressure for every transducer. To obtain a correction function for this effect the backscattered data from reference phantoms are used. We proved the estimation of acoustical attenuation with this method in phantoms and human testis
Keywords :
acoustic field; acoustic signal processing; backscatter; bioacoustics; biomedical ultrasonics; cepstral analysis; medical signal processing; ultrasonic absorption; ultrasonic focusing; ultrasonic scattering; ultrasonic transducers; B-mode-system; acoustical attenuation; backscattering; cepstral analysis; correction function; diffraction effects; distribution of pressure; focal zone adjustment; focusing capabilities; human testis; human tissue; reference phantoms; soundfield correction method; ultrasound scanners; Acoustic testing; Acoustic transducers; Attenuation; Backscatter; Humans; Imaging phantoms; Mechanical factors; Pathological processes; Ultrasonic imaging; Ultrasonic transducers;
Conference_Titel :
Engineering in Medicine and Biology Society, 1996. Bridging Disciplines for Biomedicine. Proceedings of the 18th Annual International Conference of the IEEE
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-3811-1
DOI :
10.1109/IEMBS.1996.652008
