Artifacts and artifact reduction in sonoelastography

Author

Taylor, L.S. ; Rubens, D.J. ; Parker, Kevin J.

Author_Institution

Dept. of Electr. & Comput. Eng., Rochester Univ., NY, USA

Volume

2

fYear

2000

fDate

36800

Firstpage

1849

Abstract

A technique for reducing vibration artifacts encountered when using pure tone vibration in vibration amplitude sonoelastography is presented. Multi-tone signals were designed to synchronize with the pulse repetition frequency and packet size of the scanner. When applied to phantoms with known uniform elasticity it was found that noise levels using the multi-tone signals were 28 to 35% less than when pure tone vibration was used. Images of a hard phantom lesion made using multi-tone vibration compared favorably with those using pure tone vibration

Keywords

Hilbert spaces; biomechanics; biomedical ultrasonics; eigenvalues and eigenfunctions; elasticity; medical image processing; motion estimation; tumours; vibrations; Hilbert space; artifact reduction; eigenmodes; hard phantom lesion; modal artifacts; multi-tone signals; noise levels; pulse repetition frequency; pure tone vibration; real time technique; scanner packet size; shear modulus; tumour visibility; uniform elasticity phantoms; vibration amplitude sonoelastography; vibration artifacts; Elasticity; Frequency synchronization; Imaging phantoms; Interference; Lesions; Magnetic resonance imaging; Neoplasms; Radiology; Reflection; Signal design;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2000 IEEE

Conference_Location

San Juan

ISSN

1051-0117

Print_ISBN

0-7803-6365-5

Type

conf

DOI

10.1109/ULTSYM.2000.921684

Filename

921684