Accession Number:

ADA470978

Title:

Enhanced Ultrasound Visualization of Brachytherapy Seeds by a Novel Magnetically Induced Motion Imaging Method

Descriptive Note:

Annual rept. 1 Apr 2006-31 Mar 2007

Corporate Author:

ROCHESTER UNIV NY

Personal Author(s):

Report Date:

2007-04-01

Pagination or Media Count:

15.0

Abstract:

We report our progress in developing Magnetically Induced Motion Imaging MIMI for unambiguous identification and localization brachytherapy seeds in ultrasound images. In this period we have used finite-element models to determine a torque maximizing seed core shape to generate the greatest possible seed vibration for a given core volume. We present two new signal-processing methods. The first is a compounding method for suppression of comet-tail artifacts in segmented seed images. The second is a method for joining ends of seeds in segmented seed images based on the phase of the detected vibration signal. Both methods are demonstrated in vitro using a commercial ultrasound scanner and tissue-mimicking phantoms.

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE