Title :
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
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 (CNRe) was then analyzed. A non-linear tradeoff between the CNRe 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;
Conference_Titel :
Ultrasonics, 2003 IEEE Symposium on
Print_ISBN :
0-7803-7922-5
DOI :
10.1109/ULTSYM.2003.1293219
