Gn. Kawchuk et Pd. Elliott, VALIDATION OF DISPLACEMENT MEASUREMENTS OBTAINED FROM ULTRASONIC IMAGES DURING INDENTATION TESTING, Ultrasound in medicine & biology, 24(1), 1998, pp. 105-111
Citations number
30
Categorie Soggetti
Radiology,Nuclear Medicine & Medical Imaging",Acoustics
Biomechanical features of soft tissue are commonly investigated by ind
entation, a procedure where a blunt probe is advanced and the ensuing
deformation of the tissue surface recorded. If it were possible to vis
ualize subsurface anatomy during the indentation process, biomechanica
l investigation of internal tissue features might be feasible, The pur
pose of this experiment was to determine the accuracy of ultrasonicall
y-derived measures of displacement obtained during indentation testing
of an ultrasonic phantom, Using a 5-MHz sector transducer mounted to
an automated indentation device, ultrasonic estimates of distance betw
een a stationary target surface and the moving ultrasonic transducer w
ere obtained and validated to a criterion, Depending on the method use
d to locate the target surface on the resulting B-mode image, the mean
displacement error ranged from 14.37% to 22.05%, Use of this protocol
for human tissue assessment, in vivo or otherwise, may be appropriate
if the displacements of interest are greater than the error of the pr
ocedure. (C) 1998 World Federation for Ultrasound in Medicine & Biolog
y.