Penalized weighted least-squares approach to sinogram noise reduction and image reconstruction for low-dose X-ray computed tomography.
Jing WangTianfang LiHongbing LuZhengrong LiangPublished in: IEEE Trans. Medical Imaging (2006)
Keyphrases
- image reconstruction
- weighted least squares
- noise reduction
- least squares
- computed tomography
- reconstructed image
- limited angle
- radon transform
- ct scans
- edge preserving
- edge detection
- signal to noise ratio
- computer tomography
- ct data
- noise level
- super resolution
- maximum a posteriori
- synthetic aperture radar
- lung nodules
- optical flow
- missing data
- maximum likelihood
- image processing
- positron emission tomography
- image quality
- image segmentation