ECTS Abstracts (2015) 1 P77

Computational solution [ldquo]ODR-ATA[rdquo][rdquo] to measurement of bone density from radiographic density

Márcio Teixeira Oliveira1, Eduardo Hiroshi Nakamura1, Luis Borges Gouveia3, Loiane Massunari2 & Mário Jefferson Quirino Louzada2

1Federal Institute of Education, Sciense, and Tecnology of Mato Grosso do Sul - IFMS, Três Lagoas/MS, Brazil, 2São Paulo State University, Araçatuba/SP, Brazil, 3Fernando Pessoa University, Porto, Portugal.

The radiographic densitometry is the technic that allows the evaluation of bone density, which uses references created in inert material (e.g. aluminium) especially to the investigation of bone modifications and illnesses such as osteoporosis. To increase technical precision some authors suggest the use of mathematical equations, such as the least squares method, Laplace’s theorem, and the Rule of Sarrus allowing better results when achieving the adjustment of the curve that is characteristic of X-ray absorption by what is being studied. The usage of technologies such as Java, gnuplot, broffice calc, all of open code, allowed us to develop the software “ODR-ATA”, which is capable of analysing and processing digital radiographic images and of calculating values of density close to the values of the object under study. Recently, various paid solutions have the support to perform radiographic densitometry. The purpose of this study is to develop a computational solution of free code to calculate bone density starting from the radiographic densitometry. In order to test the software, I performed an experiment that started with the radiography of an aluminium ladder of unknown values. I performed 10 repetitions and evaluated steps 4,5,6,7 and 8 of the aluminium ladder. The results I achieved with “ODR-ATA” for steps of number 5,6,7 and 8 show a precision of 3.64%% and 3.63%, respectively, which attest for the validity and reliability of the software in the discovery of the bone density obtained through the radiographic densitometry.

Disclosure: The authors declared no competing interests.

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