DocumentCode :
2368970
Title :
Strain magnitude estimation based on adaptive incompressibility processing
Author :
Donnell, M.O. ; Chen, X. ; Kaluzynski, K. ; Emelianov, S.Y. ; Skovoroda, A.R.
Author_Institution :
Biomed. Eng. Dept., Michigan Univ., Ann Arbor, MI, USA
Volume :
2
fYear :
2001
fDate :
2001
Firstpage :
1643
Abstract :
Two-dimensional phase-sensitive speckle tracking of high frame rate, real-time images has been tested as a possible means for strain rate imaging (SRI) of the beating heart. Due to the poor signal to noise ratio (SNR) of lateral displacement estimates, an adaptive incompressibility method has been developed to produce both shear strain and strain magnitude images with spatial resolution and SNR approaching axial strain images. To test the proposed approach, strain images were produced for a thick-walled, cylindrical phantom modeling cardiac deformations. Strain magnitude images with spatial resolution between 1-2 mm were generated using an array system operating at 5 MHz. These images clearly show low deformation regions in the phantom difficult to identify on tissue velocity derived strain images
Keywords :
biological tissues; biomedical ultrasonics; cardiology; medical image processing; speckle; 5 MHz; adaptive incompressibility processing; cardiac deformation; cylindrical phantom; heart; real-time imaging; signal-to-noise ratio; spatial resolution; strain magnitude imaging; tissue velocity imaging; two-dimensional phase-sensitive speckle tracking; ultrasonic transducer array; Biomedical engineering; Capacitive sensors; Heart; High-resolution imaging; Imaging phantoms; Signal to noise ratio; Spatial resolution; Speckle; TV interference; Testing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Ultrasonics Symposium, 2001 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-7177-1
Type :
conf
DOI :
10.1109/ULTSYM.2001.992037
Filename :
992037
Link To Document :
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