NDLI: 3D Strain Detection of a Support Implant for an Artificial Hip Joint Using Finite Element Method and Genetic Algorithm

Content Provider	IEEE Xplore Digital Library
Author	Maeda, C. Kobashi, S. Shibanuma, N. Kondo, K. Hata, Y.
Copyright Year	2005
Description	Author affiliation: University of Hyogo (Maeda, C.)
Abstract	A form of a support implant used in revision total hip arthroplasty (THA) should be diagnosed periodically because it may be distorted or broken. This paper proposes a new method that estimates the strength of stress on the support implant using finite element method (FEM) and genetic algorithm (GA). 3D sectional images of the support implant in vivo are acquired from multidtector-row computed tomography (MDCT) devices. The proposed method searches for a model whose shape is same as the support implant in MDCT images using GA. The database consists of many parts of the support implant that are generated by FEM with various patterns of strain. Direction and strength of the stress are estimated from the searched model. As a result of the proposed method applying to simulated MDCT images of horseshoe-shaped phantoms, the proposed method found the correct model. Also, the method detected the strain within the error of 1.03±0.38mm and 33.0±12.3N. Additionally, we applied the method to MDCT images of 2 patients after THA. The results showed that the direction and the strength of the stress were successfully estimated.
Starting Page	23
Ending Page	23
File Size	386577
Page Count	1
File Format	PDF
ISBN	0769524672
DOI	10.1109/DICTA.2005.2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-12-06
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	IEEE/CSP
Subject Keyword	In vivo Shape Image databases Computed tomography Implants Capacitive sensors Finite element methods Hip Stress Genetic algorithms
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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