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Article Dans Une Revue International Journal of Imaging Systems and Technology Année : 2021

Bone microarchitecture characterization based on fractal analysis in spatial frequency domain imaging

Résumé

This paper suggests a new technique for trabecular bone characterization using fractal analysis of X-Ray and MRI texture images for osteoporosis diagnosis. Osteoporosis is a chronic disease characterized by a decrease in bone density that can lead to fracture and disability. In essence, the proposed fractal model makes use of the differential box-counting method (DBCM) to estimate the fractal dimension (FD) after an appropriate image preprocessing stage that ensures a robust estimation process. In this study, we showed that within the frequency domain generated through discrete cosine transform (DCT), only a quarter of DCT coefficients are enough to characterize osteoporotic tissues. The algorithmic complexity of the developed approach is of the order of N8log2N8 where N stands for the size of the image, which, in turn, likely yields important gain in terms of medication cost. We report a successful separation of healthy and pathological cases in term of both P - value (using statistical Wilcoxon rank sum test) and margin difference. A comparative statistical analysis has been performed using a publicly available database that contains a set of MRI and X-Ray texture images of both healthy and osteoporotic bone tissues. The statistical results demonstrated the feasibility and accepted performance level of our fractal model-based diagnosis to discriminate healthy and unhealthy trabecular bone tissues. The developed approach has been implemented on a medical device prototype.
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Dates et versions

hal-03322500 , version 1 (20-11-2023)

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Citer

Soraya Zehani, Abdeldjalil Ouahabi, Mourad Oussalah, Malika Mimi, Abdelmalik Taleb-Ahmed. Bone microarchitecture characterization based on fractal analysis in spatial frequency domain imaging. International Journal of Imaging Systems and Technology, 2021, 31 (1), pp.141-159. ⟨10.1002/ima.22512⟩. ⟨hal-03322500⟩
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