Evaluation of a nondiffracting transducer for tissue characterization

Jian yu Lu, James F. Greenleaf

Research output: Contribution to journalConference articlepeer-review

34 Scopus citations


The authors describe a method for estimating backscatter coefficients of excised human liver samples and the RMI413A tissue equivalent phantom, using the J0 Bessel nondiffracting transducer. A formula for the calculation of backscatter coefficients that requires only two one-dimensional integrations in addition to one-dimensional Fourier transforms is presented. This equation in combination with backscatter from a J0 Bessel nondiffracting beam results in the ability to calculate backscatter coefficients in real time. In addition, estimations of the backscatter coefficients are more distance-independent because of the nonspreading nature of the J0 Bessel nondiffracting beam. The present results compare well to those obtained by the conventional focused Gaussian beam transducer.

Original languageEnglish (US)
Pages (from-to)795-798
Number of pages4
JournalUltrasonics Symposium Proceedings
StatePublished - 1990
EventProceedings of the IEEE 1990 Ultrasonics Symposium - Honolulu, HI, USA
Duration: Dec 4 1990Dec 7 1990

ASJC Scopus subject areas

  • General Engineering


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