A HYPER-SURFACE-BASED MODELING AND CORRECTION OF BIAS FIELD IN MR IMAGES

Daouia Azzouz; ,; Smaine Mazouzi; ,

Article Details

A HYPER-SURFACE-BASED MODELING AND CORRECTION OF BIAS FIELD IN MR IMAGES

Authors:

Daouia Azzouz | , | Smaine Mazouzi | ,

Publisher:

Princess Sumaya University for Technology

Journal:

Jordanian Journal of Computers and Information Technology Vol.7 Issue 3, pp.0-0

Document Type:

Article

Publication Date:

1/2021

Document Language:

English

Document ID (Org No.):

2001936944

pISSN:

2413-9351

Keywords:

Abstract:

 Dealing with the different artifacts in medical images is necessary to perform several tasks, including segmentation. We introduce in this paper a novel method for bias field correction in Magnetic Resonance Imaging (MRI). Using the segmentation results obtained by a modified Expectation Maximization clustering, the bias field is fitted as a hyper-surface in a 4D hyper-space. Then, it is corrected based on the fact that voxels belonging to the same tissue should have the same intensity in the whole image. So, after a quick and coarse unsupervised voxel labeling by clustering by parts is performed, the bias field is computed for reliably labeled voxels. For the less reliably labeled voxels, the bias field is interpolated using a hyper-surface, estimated by a 4D Lagrangian interpolation. We evaluated the efficiency of the proposed method by comparing segmentation results with and without bias field correction. Also, we used the coefficient of variation within the MRI volume. Segmentation results and the coefficient of variation results were significantly enhanced after bias field correction by the proposed method.

Article Details

A HYPER-SURFACE-BASED MODELING AND CORRECTION OF BIAS FIELD IN MR IMAGES

Authors:

Daouia Azzouz | , | Smaine Mazouzi | ,

Publisher:

Princess Sumaya University for Technology

Journal:

Jordanian Journal of Computers and Information Technology Vol.7 Issue 3, pp.0-0

Document Type:

Article

Publication Date:

1/2021

Document Language:

English

Document ID (Org No.):

2001936944

pISSN:

2413-9351

MRI data labeling

Bias field correction

EM clustering

4D hyper-surface

Lagrangian interpolation

Issues

Article Details

A HYPER-SURFACE-BASED MODELING AND CORRECTION OF BIAS FIELD IN MR IMAGES

Authors: Daouia Azzouz | , | Smaine Mazouzi | ,

Publisher: Princess Sumaya University for Technology

Journal: Jordanian Journal of Computers and Information Technology Vol.7 Issue 3, pp.0-0

Document Type: Article

Publication Date: 1/2021

Document Language: English

Document ID (Org No.): 2001936944

pISSN: 2413-9351

MRI data labeling

Bias field correction

EM clustering

4D hyper-surface

Lagrangian interpolation

Issues

Authors:

Daouia Azzouz | , | Smaine Mazouzi | ,

Publisher:

Princess Sumaya University for Technology

Journal:

Jordanian Journal of Computers and Information Technology Vol.7 Issue 3, pp.0-0

Document Type:

Article

Publication Date:

1/2021

Document Language:

English

Document ID (Org No.):

2001936944

pISSN:

2413-9351