## Abstract

This paper investigates the feasibility of implementing
real-time synthetic aperture 3D imaging on the
experimental system developed at the Center for Fast Ultrasound
Imaging using a 2D transducer array. The target array
is a fully populated 32 × 32 3 MHz array with a half wavelength
pitch. The elements of the array are grouped in blocks
of 16 × 8, which can simultaneously be accessed by the 128
channels of the scanner. Using 8-to-1 high-voltage analog
multiplexors, any group of 16 × 8 elements can be accessed.
Simulations are done using Field II using parameters from
a 32 x 32 elements experimental array made by Vermon with
a center frequency of 2.93 MHz, fractional bandwidth of 58
%, and a pitch of 300 µm. The simulations show, that using
all of the 128 elements a spherical wave within ±50 degrees
sector can be created. The level of the edge waves is reduced
by applying apodization with an elliptic footprint.
The results of simulations show that the angular resolution
at -6dB is 2.7 degrees, and is determined by the distance between
the outer-most transmit elements. The peak gratinglobe
levels are −23.5, −25, 27.2, −44.5 dB below the main
peak for 64, 100, 144, and 169 transmit events, respectively.
The number of scanned volumes per second for these cases
are 78, 50, 34 and 30, respectively.

Original language | English |
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Title of host publication | Proceedings of 2003 IEEE Symposium on Ultrasonics |

Volume | 2 |

Publisher | IEEE |

Publication date | 2003 |

Pages | 1903-1906 |

ISBN (Print) | 0-7803-7922-5 |

DOIs | |

Publication status | Published - 2003 |

Event | 2003 IEEE Ultrasonics Symposium - Honolulu, United States Duration: 5 Oct 2003 → 8 Oct 2003 http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=9075 |

### Conference

Conference | 2003 IEEE Ultrasonics Symposium |
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Country/Territory | United States |

City | Honolulu |

Period | 05/10/2003 → 08/10/2003 |

Internet address |

Series | I E E E International Ultrasonics Symposium. Proceedings |
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ISSN | 1051-0117 |