Title :
Evaluation of asteroidal transducers
Author :
Balcer-Kubiczek, Elizabeth K. ; Harrison, George H.
Author_Institution :
Dept. of Radiat. Oncology, Maryland Univ., Sch. of Med., Baltimore, MD, USA
Abstract :
Ultrasonic intensity distributions have been calculated for uniformly excited asteroidal sources emulating corresponding radially shaded transducers. Improved calculations yielded good agreement with experimental results using lead metaniobate transducers in water. The dependence of asymmetries in transverse intensity distributions upon axial distance and the degree of shading is shown.<>
Keywords :
acoustic field; ultrasonic transducers; acoustic field; asteroidal transducers; radially shaded transducers; ultrasonic intensity; Azimuthal angle; Biomedical electrodes; Ferroelectric materials; Geometry; Oncology; Ultrasonic transducers; Ultrasonics, ferroelectrics, and frequency control;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
