Correction of intensity variations in MR images for computer-aided tissue classification
- 1 January 1993
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Medical Imaging
- Vol. 12 (4), 770-781
- https://doi.org/10.1109/42.251128
Abstract
A number of supervised and unsupervised pattern recognition techniques have been proposed in recent years for the segmentation and the quantitative analysis of MR images. However, the efficacy of these techniques is affected by acquisition artifacts such as inter-slice, intra-slice, and inter-patient intensity variations. Here a new approach to the correction of intra-slice intensity variations is presented. Results demonstrate that the correction process enhances the performance of backpropagation neural network classifiers designed for the segmentation of the images. Two slightly different versions of the method are presented. The first version fits an intensity correction surface directly to reference points selected by the user in the images. The second version fits the surface to reference points obtained by an intermediate classification operation. Qualitative and quantitative evaluation of both methods reveals that the first one leads to a better correction of the images than the second but that it is more sensitive to operator errors.This publication has 18 references indexed in Scilit:
- Automatic detection of intracranial contours in MR imagesComputerized Medical Imaging and Graphics, 1994
- A comparison of neural network and fuzzy clustering techniques in segmenting magnetic resonance images of the brainIEEE Transactions on Neural Networks, 1992
- Nonlinear anisotropic filtering of MRI dataIEEE Transactions on Medical Imaging, 1992
- Analysis of brain and cerebrospinal fluid volumes with MR imaging. Part I. Methods, reliability, and validation.Radiology, 1991
- Segmentation of MR Brain Images into Cerebrospinal Fluid Spaces, White and Gray MatterJournal of Computer Assisted Tomography, 1989
- Correction for intensity falloff in surface coil magnetic resonance imagingMedical Physics, 1988
- Multispectral analysis of MR images of the breast.Radiology, 1987
- Multivariate interpolation at arbitrary points made simpleZeitschrift für angewandte Mathematik und Physik, 1979
- An Intrinsic Approach to Multivariate Spline Interpolation at Arbitrary PointsPublished by Springer Science and Business Media LLC ,1979
- Interpolation using surface splines.Journal of Aircraft, 1972