An experimental characterization of spatial resolution in elastography: analysis of the tradeoffs between spatial resolution and contrast-to-noise ratio

Author

Srinivasan, S. ; Righetti, R. ; Ophir, J.

Author_Institution

Dept. of Radiol., Univ. of Texas Med. Sch., Houston, TX, USA

Volume

2

fYear

2003

fDate

5-8 Oct. 2003

Firstpage

1618

Abstract

An experimental study of the spatial resolution in elastography was conducted. Models that involved two cylindrical inclusions placed in the form of a wedge were used to characterize the axial and lateral resolution of the axial strain elastograms. A good agreement between the experimental results and the theoretical results was found. The tradeoff between the spatial resolution and the elastographic contrast-to-noise ratio (CNR_e) was then analyzed. A non-linear tradeoff between the CNR_e and the axial resolution was found that confirmed prior theoretical findings.

Keywords

biomedical ultrasonics; image resolution; inclusions; phantoms; strain measurement; ultrasonic imaging; axial resolution; axial strain elastograms; cylindrical inclusions; elastographic contrast-to-noise ratio; elastography; experimental characterization; lateral resolution; spatial resolution; Biomedical engineering; Biomedical imaging; Capacitive sensors; Equations; Imaging phantoms; Radio frequency; Radiology; Spatial resolution; Strain measurement; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics, 2003 IEEE Symposium on

Print_ISBN

0-7803-7922-5

Type

conf

DOI

10.1109/ULTSYM.2003.1293219

Filename

1293219