On the design of dual mode arrays for imaging and therapy

Brett Otteson, Emad S. Ebbini

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

1 Scopus citations

Abstract

Dual Mode Ultrasound Arrays (DMUAs) represent a new paradigm in non-invasive image-guided surgery. For therapeutic efficiency, DMUA design is optimized by using large elements and a small number of driving circuits. For accurate imaging, conventional delay-and-sum beam forming necessitates a large number of small elements. This investigation aims to ease hardware requirements for continuous wave DMUAs in therapeutic mode while maintaining small element size useful for imaging. A phase and magnitude quantization technique was developed to cluster elements with similar excitations. A set of elements in a cluster is connected in parallel to a single amplifier, which results in significant channel count reduction. The resulting heating fields were simulated and compared to the fields from unquantized arrays. Results indicate that it is possible to reproduce a desired field with high fidelity using a small number of distinct driving signals.

Original languageEnglish (US)
Title of host publicationTHERAPEUTIC ULTRASOUND
Subtitle of host publication5th International Symposium on Therapeutic Ultrasound
Pages430-434
Number of pages5
DOIs
StatePublished - May 8 2006
EventTHERAPEUTIC ULTRASOUND: 5th International Symposium on Therapeutic Ultrasound - Boston, MA, United States
Duration: Oct 27 2005Oct 29 2005

Publication series

NameAIP Conference Proceedings
Volume829
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherTHERAPEUTIC ULTRASOUND: 5th International Symposium on Therapeutic Ultrasound
Country/TerritoryUnited States
CityBoston, MA
Period10/27/0510/29/05

Keywords

  • Array design
  • Beamforming
  • Pattern synthesis
  • Phased arrays
  • Ultrasonic imaging

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