MRI intensity nonuniformity correction using simultaneously spatial and gray-level histogram information
✍ Scribed by Julien Milles; Yue Min Zhu; Gérard Gimenez; Charles R.G. Guttmann; Isabelle E. Magnin
- Book ID
- 104015805
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 893 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0895-6111
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✦ Synopsis
A novel approach for correcting intensity nonuniformity in magnetic resonance imaging (MRI) is presented. This approach is based on the simultaneous use of spatial and gray-level histogram information. Spatial information about intensity nonuniformity is obtained using cubic Bspline smoothing. Gray-level histogram information of the image corrupted by intensity nonuniformity is exploited from a frequential point of view. The proposed correction method is illustrated using both physical phantom and human brain images. The results are consistent with theoretical prediction, and demonstrate a new way of dealing with intensity nonuniformity problems. They are all the more significant as the ground truth on intensity nonuniformity is unknown in clinical images.