Spatially-Adaptive Reconstruction in Computed Tomography Using Neural Networks
- 6 February 2015
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Medical Imaging
- Vol. 34 (7), 1474-1485
- https://doi.org/10.1109/tmi.2015.2401131
Abstract
We propose a supervised machine learning approach for boosting existing signal and image recovery methods and demonstrate its efficacy on example of image reconstruction in computed tomography. Our technique is based on a local nonlinear fusion of several image estimates, all obtained by applying a chosen reconstruction algorithm with different values of its control parameters. Usually such output images have different bias/variance trade-off. The fusion of the images is performed by feed-forward neural network trained on a set of known examples. Numerical experiments show an improvement in reconstruction quality relatively to existing direct and iterative reconstruction methods.Keywords
Funding Information
- European Research Council under European Union’s Seventh Framework Program, ERC (320649)
- Gurwin Family Fund
This publication has 27 references indexed in Scilit:
- Image Quality Assessment: From Error Visibility to Structural SimilarityIEEE Transactions on Image Processing, 2004
- Optimal nonlinear line-of-flight estimation in positron emission tomographyIEEE Transactions on Nuclear Science, 2003
- Statistical image reconstruction for polyenergetic X-ray computed tomographyIEEE Transactions on Medical Imaging, 2002
- Image processing with neural networks—a reviewPattern Recognition, 2002
- Active contours without edgesIEEE Transactions on Image Processing, 2001
- The Visible Human ProjectProceedings of the IEEE, 1998
- A neural network image reconstruction technique for electrical impedance tomographyIEEE Transactions on Medical Imaging, 1994
- An Artificial Neural Network for Lesion Detection on Single-Photon Emission Computed Tomographic ImagesInvestigative Radiology, 1992
- An artificial neural network for SPECT image reconstructionIEEE Transactions on Medical Imaging, 1991
- Computerized Tomography: The New Medical X-Ray TechnologyThe American Mathematical Monthly, 1978