Feasibility of linear arrays for interstitial ultrasound thermal therapy

Rajiv Chopra, Michael J. Bronskill, F. Stuart Foster

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

The feasibility of linear array transducers for interstitial ultrasound thermal therapy was evaluated. Theoretical acoustic power distributions were used to calculate spatial heating patterns using the bioheat transfer equation. The spatial heating patterns of linear array and single element planar rectangular transducers were compared. Scanned heating with both transducer geometries produced asymmetric heating volumes; however, a more uniform radial temperature profile with a sharper margin was achieved with linear arrays. Single element transducers produced excessive heating near the probe surface. Homogeneous blood flow is predicted to reduce the mean temperature within the heated region, with little effect on the spatial pattern. (C) 2000 American Association of Physicists in Medicine.

Original languageEnglish (US)
Pages (from-to)1281-1286
Number of pages6
JournalMedical physics
Volume27
Issue number6
DOIs
StatePublished - Jun 2000

ASJC Scopus subject areas

  • Biophysics
  • Radiology Nuclear Medicine and imaging

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