Feasibility of miniature high-frequency piezoelectric ceramic hollow spheres for exposimetry and tissue ablation

Osama M. Al-Bataineh, Douglas C. Markley, Richard Joseph Meyer, Jr., Robert E. Newnham, Nadine Barrie Smith

Research output: Contribution to journalArticle

Abstract

Miniature, high frequency piezoelectric ceramic hollow spheres were evaluated for potential use as hydrophones for exposimetry of high intensity ultrasound fields and as minimally invasive tissue ablation devices. Spheres with diameters ranging from 0.7 to 1.0 mm, with resonance frequencies from 1.8 to 2.7 MHz were used as hydrophones. An almost constant sensitivity was reported for these hydrophones and an omni directional receive pattern was also demonstrated. The hollow sphere hydrophone exhibited twice the sensitivity of a needle hydrophone but with no pre-amplification stages and could withstand four times higher pressure. As a minimally invasive interstitial ablation device, the results demonstrated an increased necrosed tissue volume for increasing exposure time. For example, with a 1.0 mm diameter sphere (f = 1.87 MHz), the necrosed tissue diameter as a function of exposure times was 2.35 ± 0.34, 3.00 ± 0.37 and 4.61 ± 1.13 mm for 5, 10 and 15 sec. sonications, respectively.

Original languageEnglish (US)
Pages (from-to)78-83
Number of pages6
JournalMaterials Research Innovations
Volume8
Issue number2
DOIs
StatePublished - Jan 1 2004

Fingerprint

Hydrophones
Piezoelectric ceramics
hydrophones
piezoelectric ceramics
Ablation
ablation
hollow
Tissue
Sonication
sensitivity
needles
Needles
Amplification
interstitials
Ultrasonics

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Al-Bataineh, Osama M. ; Markley, Douglas C. ; Meyer, Jr., Richard Joseph ; Newnham, Robert E. ; Smith, Nadine Barrie. / Feasibility of miniature high-frequency piezoelectric ceramic hollow spheres for exposimetry and tissue ablation. In: Materials Research Innovations. 2004 ; Vol. 8, No. 2. pp. 78-83.
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Feasibility of miniature high-frequency piezoelectric ceramic hollow spheres for exposimetry and tissue ablation. / Al-Bataineh, Osama M.; Markley, Douglas C.; Meyer, Jr., Richard Joseph; Newnham, Robert E.; Smith, Nadine Barrie.

In: Materials Research Innovations, Vol. 8, No. 2, 01.01.2004, p. 78-83.

Research output: Contribution to journalArticle

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