手法を比較

	磁気共鳴エラストグラフィ	CT反復再構成
分野	医用画像	医用画像
系統	Process / pipeline	Process / pipeline
提唱年	1995	1974
提唱者	Richard Muthupillai	Richard Gordon
種類	MRI-based measurement of tissue stiffness	Algorithm for tomographic image reconstruction
原典	Muthupillai, R., Lomas, D. J., Rossman, P. J., et al. (1995). Magnetic resonance elastography by direct visualization of propagating acoustic strain waves. Science, 269(5232), 1854-1857.	Gordon, R., Bender, R., Herman, G. T. (1974). Algebraic reconstruction techniques (ART) for three-dimensional electron microscopy and X-ray photography. Journal of Theoretical Biology, 29(3), 471-481.
別名	MRE, elastography, tissue stiffness mapping	MBIR, ASIR, IR-CT, statistical reconstruction
関連	5	5
概要	Magnetic Resonance Elastography (MRE) is a non-invasive imaging technique that measures tissue stiffness by encoding the motion of acoustic shear waves into MRI signal and calculating the elastic modulus from wave propagation patterns. Developed by Muthupillai and colleagues in 1995, MRE enables quantitative assessment of tissue mechanics, particularly useful for diagnosing liver fibrosis, cardiac dysfunction, and neurological diseases. It has emerged as a non-invasive alternative to biopsy for staging hepatic fibrosis and is expanding into other organ systems.	CT Iterative Reconstruction (IR) is a computational technique that reconstructs tomographic images from raw X-ray projection data by iteratively refining an estimate of tissue attenuation until it matches the measured projections. Developed from algebraic reconstruction techniques pioneered by Gordon in 1974, iterative reconstruction has revolutionized clinical CT by enabling high-quality images at reduced radiation dose. Variants such as Adaptive Statistical Iterative Reconstruction (ASIR) and Model-Based Iterative Reconstruction (MBIR) are now standard on modern CT scanners.