Title :
Uncertainty relation in elastography: new approach to explain for errors of in vivo elastography
Author :
Hiltawsky, K.M. ; Ermert, H.
Author_Institution :
Dept. of Electr. Eng., Ruhr-Univ., Bochum, Germany
Abstract :
Since its invention in 1991 by Ophir et al. ultrasonic strain imaging (elastography) has been investigated by many researchers, including theoretical analysis, in vitro studies and clinical experiments in vivo. However, the clinical relevance of the method concerning an improvement of diagnostic sensitivity and specifity of cancerous lesions has not been shown yet. We want to present a model that explains the loss of strain image quality in case of clinical examinations due to lateral displacements, which are not present in theoretical experiments and in vitro studies, respectively
Keywords :
biomedical ultrasonics; cancer; measurement errors; measurement uncertainty; cancerous lesion; clinical diagnosis; error; in vivo elastography; lateral displacement; ultrasonic strain imaging; uncertainty relation; Capacitive sensors; Correlation; Delay effects; Delay estimation; Frequency estimation; In vivo; Scattering; Signal to noise ratio; Ultrasonic imaging; Uncertainty;
Conference_Titel :
Ultrasonics Symposium, 2001 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-7177-1
DOI :
10.1109/ULTSYM.2001.992027
