Development of high frequency annular arrays for medical imaging

K. A. Snook, T. R. Shrout, K. K. Shung

Research output: Contribution to journalConference article

12 Scopus citations

Abstract

A 3mm, 50 MHz ultrasound annular array incorporating six equal-area elements was designed and fabricated. The array incorporated fine-grain lead titanate to reduce lateral coupling. The kerfs were diced to 30 microns using laser micromachining. A lens was used to provide an f-number of 3, The interconnect was achieved by sputter masking and application of silver epoxy. The average center frequency and bandwidth of the array elements was 55 MHz and 22%, respectively. The maximum nearest-element crosstalk throughout the passband was measured as -22 dB in water, and insertion loss varied from 11-29 dB. Imaging of an 8 Urn wire target with one of the outer elements showed a practical imaging depth starting under 6 mm, which agreed well with simulations.

Original languageEnglish (US)
Pages (from-to)865-868
Number of pages4
JournalProceedings of the IEEE Ultrasonics Symposium
Volume1
StatePublished - Dec 1 2003
Event2003 IEEE Ultrasonics Symposium - Proceedings - Honolulu, HI, United States
Duration: Oct 5 2003Oct 8 2003

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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