Measuring the phase of vibration of spheres in a viscoelastic medium as an image contrast modality

Matthew W Urban, Randall R. Kinnick, James F Greenleaf

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Detection of calcifications in breast is an important problem in the diagnosis of breast cancer. Vibro-acoustography is a recently developed method that uses the radiation force of ultrasound to create images of the mechanical response of an object at a low frequency using the magnitude or phase of the response. Small spheres are used to explore the use of the phase of vibration as a contrast modality for use in detection and identification of calcifications in breast tissue. An experiment is presented to measure the magnitude and phase of vibration at different frequencies. The theoretical and experimental results are compared for spheres of two different sizes. Phase images are shown in which five spheres of different density can be clearly distinguished from each other. With phase measurements and images, it is demonstrated that predictable image contrast exists for spheres of different density embedded in a viscoelastic medium.

Original languageEnglish (US)
Pages (from-to)3465-3472
Number of pages8
JournalJournal of the Acoustical Society of America
Volume118
Issue number6
DOIs
StatePublished - Dec 2005

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image contrast
breast
calcification
vibration
cancer
low frequencies
Modality
radiation

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this

Measuring the phase of vibration of spheres in a viscoelastic medium as an image contrast modality. / Urban, Matthew W; Kinnick, Randall R.; Greenleaf, James F.

In: Journal of the Acoustical Society of America, Vol. 118, No. 6, 12.2005, p. 3465-3472.

Research output: Contribution to journalArticle

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