In vitro and in vivo real-time imaging with ultrasonic limited diffraction beams

Jian yu Lu, Tai K. Song, Randall R. Kinnick, James F Greenleaf

Research output: Contribution to journalArticle

47 Scopus citations


Recently, there has been great interest in a new class of solutions to the isotropic/homogeneous scalar wave equation which represents localized waves or limited diffraction beams in electromagnetics, optics, and acoustics. Applications of these solutions to ultrasonic medical imaging, tissue characterization, and nondestructive evaluation of materials have also been reported. This paper reports a real-time medical imager which uses limited diffraction Bessel beams, X waves, Axicons, or conventional beams. Results (in vitro and in vivo) show that the images obtained with limited diffraction beams have higher resolution and good contrast over larger depth of field compared to images obtained with conventional focused beams. These results suggest the potential clinical usefulness of limited diffraction beams.

Original languageEnglish (US)
Pages (from-to)819-830
Number of pages12
JournalIEEE Transactions on Medical Imaging
Issue number4
StatePublished - Dec 1993


ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Computer Science Applications
  • Biomedical Engineering
  • Electrical and Electronic Engineering
  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

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