In-vivo synthetic aperture and plane wave high frame rate cardiac imaging

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A comparison of synthetic aperture imaging using spherical and plane waves with low number of emission events is presented. For both wave types, a 90 degree sector is insonified using 15 emission events giving a frame rate of 200 frames per second. Field II simulations of point targets show similar resolution of approximately one wavelength radially and one degree angularly for both wave types. The use of spherical waves is found to have higher signal strength and better cystic resolution than plane waves. Measurements on wires in water yield similar results to simulations with similar resolution between the two wave types but better cystic resolution for spherical waves. Measurements on tissue mimicking phantoms show that both wave types penetrate down to 11 cm. Intensity measurements show an Ispta.3 of 18.4 mW/cm2 for spherical waves and 22.7 mW/cm2 for plane waves. The derated MI is 0.43 for spherical and 0.70 for plane waves. All measures are well within FDA limits for cardiac imaging. In-vivo images of the heart of a healthy 28-year old volunteer are shown.

Original languageEnglish
Title of host publicationIEEE International Ultrasonics Symposium, IUS
Number of pages4
PublisherIEEE Computer Society Press
Publication date20 Oct 2014
Article number6932094
ISBN (Electronic)9781479970490
Publication statusPublished - 20 Oct 2014
Event2014 IEEE International Ultrasonics Symposium, IUS 2014 - Chicago, United States
Duration: 3 Sep 20146 Sep 2014


Conference2014 IEEE International Ultrasonics Symposium, IUS 2014
LandUnited States
SeriesIEEE International Ultrasonics Symposium, IUS

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© 2014 IEEE.

ID: 331501026