New ultrasound and related imaging techniques

Steven A. Johnson, James F. Greenleaf

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


A brief history of medical ultrasound imaging is given to provide a setting for illustration and comparison of new imaging techniques. These new techniques are divided into two classes, namely, transmission tomography and synthetic focus reflection tomography. The evolution of transmission tomography is presented and predictions are given for future developments such as synergistic, quantitative multiple acoustic parameter tissue imaging by solution of the wave equation. Reflection synthetic focus imaging is subdivided into two subclasses based respectively on a heuristic focusing by back projection method and a more abstract method based on inversion of a matrix which relates object and data. Those characteristics of acoustic tomography, not found in x-ray CT, are illustrated by the impedance gradient related, image cancellation artifact.

Original languageEnglish (US)
Pages (from-to)2812-2816
Number of pages5
JournalIEEE Transactions on Nuclear Science
Issue number2
StatePublished - Apr 1979

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering


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