Spectral Subtraction Denoising (SSD) Improves Factor-3 GRAPPA 3T Lumbar MRI for Disc Herniation
Parallel imaging shortens lumbar MRI examinations but factor-3 GRAPPA produces spatially varying noise that can obscure clinically important structures. Evidence for a simple, reproducible spectral subtraction denoising approach in clinically acquired 3T lumbar examinations remains limited. This paired pretest-posttest...