Second-harmonic aberration correction

Halvard Kaupang*, Trond Varslot, Svein Erik Måsøy

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    2 Citations (Scopus)


    A simulation study is performed to present results concerning 3D aberration correction for harmonic imaging. Two different correction schemes (a pure time-delay correction and a time-delay and amplitude correction) are employed along with estimation based on either the received first- or second-harmonic frequency. An aberrating body wall is implemented as a 20 mm delay-screen body wall using eight screens, and is tuned to match human abdominal wall characteristics. The transmit pressure of the first harmonic is set to not succeed a mechanical index of 1.1 for the uncorrected case and a pure time-delay correction. Using a time-delay and amplitude correction, the total acoustic energy transmitted is equal to that of the uncorrected case. The total amount of generated second-harmonic energy increases with approximately 1 dB for a pure time-delay correction and about 2 dB for a time-delay and amplitude correction, both estimated at the received first-harmonic frequency. The general side-lobe level of the first- and second-harmonic focal point beam profile averaged over circles around the transducer axis is lowered with 2-10 dB for both correction schemes relative to the uncorrected case.

    Original languageEnglish
    Title of host publication2007 IEEE Ultrasonics Symposium Proceedings, IUS
    Number of pages4
    Publication statusPublished - 2007
    Event2007 IEEE Ultrasonics Symposium, IUS - New York, NY, United States
    Duration: 28 Oct 200731 Oct 2007

    Publication series

    NameProceedings - IEEE Ultrasonics Symposium
    ISSN (Print)1051-0117


    Conference2007 IEEE Ultrasonics Symposium, IUS
    Country/TerritoryUnited States
    CityNew York, NY


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