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Automated and optimal detection of 3D articular cartilage using undecimated wavelets in MRI


Aarya, I and Jiang, D, Automated and optimal detection of 3D articular cartilage using undecimated wavelets in MRI, Signal, Image and Video Processing, 9, (Supplement 1) pp. S305-S314. ISSN 1863-1703 (2015) [Refereed Article]

Copyright Statement

Springer-Verlag London 2015

DOI: doi:10.1007/s11760-015-0825-x


Articular cartilage is a thin and curvilinear structure whose image may get corrupted with noise during acquisition process. Image segmentation of this structure depends on expertise of an operator. In this paper, we propose an automated cartilage detection technique using 3D histogram and wavelet multiscale singularity analysis. 3D undecimated wavelet transform is implemented on MRI volume to obtain wavelet coefficients, which are used to determine an adaptive threshold for a given local resolution and a global threshold value. Local threshold helps to segment foreground cartilage edge details and is obtained using maximum likelihood estimate of the 3D histogram for a selected confidence level of intensity histogram. A global threshold is used to optimize coefficients using wavelet multiresolution singularity. The final wavelet coefficients are used to obtain a 3D model of cartilage tissue. The proposed method has been tested and validated using MRI and phantom datasets of articular cartilage. Quantitative analysis has been performed using mean square error (MSE), signal-to-noise ratio (SNR) and volumetric estimation of the datasets for different confidence and noise levels. The proposed method displays reduction in MSE for both denoised and noisy MRI volumes at different standard deviations of noise with overall improvement in SNR.

Item Details

Item Type:Refereed Article
Keywords:3D histogram, articular cartilage detection, adaptive threshold, multiresolution analysis, Rician distribution, undecimated wavelet transform
Research Division:Information and Computing Sciences
Research Group:Artificial intelligence
Research Field:Artificial intelligence not elsewhere classified
Objective Division:Health
Objective Group:Clinical health
Objective Field:Diagnosis of human diseases and conditions
UTAS Author:Aarya, I (Miss Isshaa Aarya)
UTAS Author:Jiang, D (Dr Danchi Jiang)
ID Code:104049
Year Published:2015
Deposited By:Engineering
Deposited On:2015-11-02
Last Modified:2017-11-13

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