3D ultrasound imaging performance of a row-column addressed 2D array transducer: a simulation study

Morten Fischer Rasmussen, Jørgen Arendt Jensen

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    Abstract

    This paper compares the imaging performance of a 128+128 element row-column addressed array with a fully addressed 1616 2D array. The comparison is made via simulations of the point spread function with Field II. Both arrays have lambda-pitch, a center frequency of 3:5MHz and use 256 active elements. The row-column addressed array uses 128 transmit channels and 128 receive channels, whereas the fully addressed array uses 256 channels in both transmit and receive. The large size of the emulated row and column elements in the row-column addressed array causes ghost echoes to appear. The ghost echoes are shown to be suppressed when the sub-elements within each of the emulated row and column elements are apodized. The maximum ghost intensity is suppressed by 22:2 dB compared to using no apodization. With apodization applied, the full-width-at-half-maximum in the lateral direction for the fully addressed array is 2:81mm, and 1:01mm for the row-column addressed array. This shows that the detail resolution can be more than doubled using the row-column addressed array instead of the fully addressed array. The row column addressed array achieves a R20 dB cystic resolution of 0:76mm, compared to 3:16mm for the fully addressed array. The signicantly smaller R20 dB-value for the row-column addressed array indicates that it can achieve a much higher contrast resolution than the fully addressed array.
    Original languageEnglish
    Title of host publicationProceedings of SPIE : Medical Imaging 2013: Ultrasonic Imaging, Tomography, and Therapy
    Number of pages11
    Volume8675
    PublisherSPIE - International Society for Optical Engineering
    Publication date2013
    Article number86750C
    DOIs
    Publication statusPublished - 2013
    EventSPIE Medical Imaging 2013 - Disney's Coronado Springs Resort, Lake Buena Vista, United States
    Duration: 9 Feb 201314 Feb 2013

    Conference

    ConferenceSPIE Medical Imaging 2013
    LocationDisney's Coronado Springs Resort
    Country/TerritoryUnited States
    CityLake Buena Vista
    Period09/02/201314/02/2013

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