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Enhancement of the ultrasound images by modified anisotropic diffusion method

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Abstract

Speckle is a primary factor which degrades the contrast resolution and masks the meaningful texture information present in an ultrasound image. Its presence severely hampers the interpretation and analysis of ultrasound images. When speckle reduction technique is applied for visual enhancement of ultrasound images, it is to be kept in mind that blurring associated with speckle reduction should be less and fine details are properly enhanced. With these points in consideration, the modified speckle reduction anisotropic diffusion (MSRAD) method is proposed in the present study to improve the visual quality of the ultrasound images. In the proposed MSRAD method, the four neighboring pixel template in speckle reduction anisotropic diffusion (SRAD) method of Yu and Acton (IEEE Trans Image Process 11:1260–1270, 2002) have been replaced by a new template of larger number of neighboring pixels to calculate the diffusion term. To enhance visual quality of ultrasound images, nonquadratic regularization (Yu and Yadegar, Proceedings of the IEEE international conference on image processing, 2006) is incorporated with MSRAD method and accordingly changes in parameter settings have been made. The performance of MSRAD method was evaluated using clinical ultrasound images, interpretation by the medical experts and results of MSRAD method by subjective and objective criteria.

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Acknowledgments

The authors wish to acknowledge the Department of Electrical Engineering, Indian Institute of Technology Roorkee, Roorkee and the Department of Radiodiagnosis and Imaging, Postgraduate Institute of Medical Education and Research, Chandigarh for their constant patronage and support in carrying out the research work.

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Authors and Affiliations

  1. Department of Electrical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India

    Deepti Mittal, Vinod Kumar & Suresh Chandra Saxena

  2. Department of Radiodiagnosis, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India

    Niranjan Khandelwal & Naveen Kalra

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  1. Deepti Mittal
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  2. Vinod Kumar
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  3. Suresh Chandra Saxena
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  4. Niranjan Khandelwal
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  5. Naveen Kalra
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Correspondence to Deepti Mittal.

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Mittal, D., Kumar, V., Saxena, S.C. et al. Enhancement of the ultrasound images by modified anisotropic diffusion method. Med Biol Eng Comput 48, 1281–1291 (2010). https://doi.org/10.1007/s11517-010-0650-x

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