Characterization of a needle hydrophone array for acoustic feedback during ultrasound hyperthermia treatments

Ralf Seip, Emad S. Ebbini, Jian Hua Mo, Andrew L. Robinson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations


A prototype 16-element needle hydrophone array has been designed, fabricated and characterized. The primary use of this array is to provide acoustic feedback during ultrasound hyperthermia treatments. This feedback is necessary to compensate phased array heating patterns for patient motion and tissue inhomogeneities in real time. The array consists of a PVDF covered silicon substrate carrier which contains the signal electrodes of the individual acoustic sensors. Tests have shown that the array is sensitive to both pulsed and continuous ultrasound (943 kHz) excitation and can be used in tissue media. A complete description of the needle array, element cross-coupling measurements, beam profile measurements, calibration procedures and sensitivity analyses in both water and tissue are presented.

Original languageEnglish (US)
Title of host publication1992 Ultrasonics Symposium Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages5
ISBN (Electronic)0780305620
StatePublished - 1992
Externally publishedYes
Event1992 Ultrasonics Symposium - Tucson, United States
Duration: Oct 20 1992Oct 23 1992

Publication series

NameProceedings - IEEE Ultrasonics Symposium
ISSN (Print)1051-0117


Conference1992 Ultrasonics Symposium
Country/TerritoryUnited States

Bibliographical note

Publisher Copyright:
© 1992 IEEE.


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