Towards a resolution metric for medical ultrasonic imaging

David Vilkomerson, James Greenleaf, Vinayak Dutt

Research output: Contribution to journalConference article

30 Scopus citations

Abstract

The Rayleigh resolution criterion, or its near analogue, the full-width, half-maximum (FWHM) beam width, is not appropriate for comparing the imaging performance of scanned-beam, medical ultrasound imaging systems: these criteria ignore the low-level outlying parts of the beam that have a significant impact on the image of such wide dynamic range systems. We propose a resolution metric for such systems that is the radius of a spherical void (in a uniformly backscattering continuum) that produces a given (averaged) dip in backscattered signal power when scanned. Which beam pattern produces the best 'cystic resolution' (as we call this measure) is dependent upon the dynamic range of the imaging system. The imaging performance of several beam patterns are compared using the old resolution criteria and this new metric.

Original languageEnglish (US)
Pages (from-to)1405-1410
Number of pages6
JournalProceedings of the IEEE Ultrasonics Symposium
Volume2
StatePublished - Dec 1 1995
EventProceedings of the 1995 IEEE Ultrasonics Symposium. Part 1 (of 2) - Seattle, WA, USA
Duration: Nov 7 1995Nov 10 1995

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ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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