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Title: An ultrasound indentation system for biomechanical properties assessment of soft tissues in-vivo
Authors: Zheng, YP 
Mak, AFT
Keywords: Biomechanics
Biomedical equipment
Biomedical ultrasonics
Ultrasonic equipment
Ultrasonic transducers
Issue Date: Sep-1996
Publisher: IEEE Engineering in Medicine and Biology Society
Source: IEEE transactions on biomedical engineering, Sept. 1996, v. 43, no. 9, p. 912-918 How to cite?
Journal: IEEE transactions on biomedical engineering 
Abstract: An ultrasound indentation system for biomechanical assessment of soft tissues in vivo was developed. The pen-size, hand-held probe was composed of an ultrasound transducer and a load cell. The ultrasound transducer was at the tip of the probe serving also as the indentor. The thickness and deformation of the soft tissue layer were determined from the ultrasound echo. A compressive load cell was connected in series with the ultrasound transducer to record the force response. A validation experiment was performed on porcine tissues. Force and deformation acquired with the present system was in good comparison with those obtained from a Housfield material testing machine. Material constants were obtained via a curve-fitting procedure by predicting the force transient response from the deformation-time data using a quasilinear viscoelastic model. In addition, deformation in the fat and in the muscle could be differentiated. The potential applications of this type of indentation probes are many. The specific application of this current development is for stump tissue assessment in the design of prosthetics.
ISSN: 0018-9294
DOI: 10.1109/10.532125
Rights: © 1996 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
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