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Development of a 35-MHz piezo-composite ultrasound array for medical imaging.
- Source :
-
IEEE transactions on ultrasonics, ferroelectrics, and frequency control [IEEE Trans Ultrason Ferroelectr Freq Control] 2006 Jan; Vol. 53 (1), pp. 224-36. - Publication Year :
- 2006
-
Abstract
- This paper discusses the development of a 64-element 35-MHz composite ultrasonic array. This array was designed primarily for ocular imaging applications, and features 2-2 composite elements mechanically diced out of a fine-grain high-density Navy Type VI ceramic. Array elements were spaced at a 50-micron pitch, interconnected via a custom flexible circuit and matched to the 50-ohm system electronics via a 75-ohm transmission line coaxial cable. Elevation focusing was achieved using a cylindrically shaped epoxy lens. One functional 64-element array was fabricated and tested. Bandwidths averaging 55%, 23-dB insertion loss, and crosstalk less than -24 dB were measured. An image of a tungsten wire target phantom was acquired using a synthetic aperture reconstruction algorithm. The results from this imaging test demonstrate resolution exceeding 50 microm axially and 100 microm laterally.
Details
- Language :
- English
- ISSN :
- 0885-3010
- Volume :
- 53
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- IEEE transactions on ultrasonics, ferroelectrics, and frequency control
- Publication Type :
- Academic Journal
- Accession number :
- 16471449
- Full Text :
- https://doi.org/10.1109/tuffc.2006.1588408