Title :
Self-guided ultrasound phased arrays for noninvasive surgery
Author :
Ebbini, Emad S. ; Simon, Claudio ; Lee, Hanwoo ; Choi, Wonjoon
Author_Institution :
Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA
Abstract :
A phased array system for therapeutic applications was shown to be capable of operating in a pulse-echo imaging mode. The transducer was characterized in synthetic aperture imaging of wire targets as well as imaging a speckle generating phantom. Theoretical and experimental results have shown that suitable images could be obtained using this 1 MHz transducer in a field of view (FOV) that matches its therapeutic focusing and steering range. Therefore, the transducer has the potential to be used in a self-guided mode where the imaging data can be used in refocusing the therapeutic beam. Here, the authors show the first experimental verification of refocusing this transducer in the presence of strongly scattering structures based on pulse-echo data
Keywords :
biomedical transducers; speckle; surgery; ultrasonic transducer arrays; 1 MHz; field of view; noninvasive surgery; pulse-echo data; pulse-echo imaging mode; self-guided ultrasound phased arrays; speckle generating phantom; steering range; strongly scattering structures; therapeutic beam refocusing; therapeutic focusing; Character generation; Focusing; Imaging phantoms; Noninvasive treatment; Phased arrays; Speckle; Ultrasonic imaging; Ultrasonic transducer arrays; Ultrasonic transducers; Wire;
Conference_Titel :
Ultrasonics Symposium, 1999. Proceedings. 1999 IEEE
Conference_Location :
Caesars Tahoe, NV
Print_ISBN :
0-7803-5722-1
DOI :
10.1109/ULTSYM.1999.849264
