SNR-weighted sinogram smoothing with improved noise-resolution properties for low-dose x-ray computed tomography.
Tianfang LiJing WangJunhai WenXiang LiHongbing LuJiang HsiehZhengrong LiangPublished in: Medical Imaging: Image Processing (2004)
Keyphrases
- low dose
- signal to noise ratio
- imaging modalities
- x ray
- signal dependent noise
- computed tomography
- image reconstruction
- noise reduction
- ct scans
- noise removal
- ionizing radiation
- dual energy
- lung nodules
- high resolution
- directional filters
- noise model
- contrast enhancement
- low contrast
- radon transform
- computer tomography
- reconstructed image
- medical images
- pattern recognition
- gaussian noise
- noise level
- medical imaging