Table 6. Top10 clusters of keywords in MRE from 1995 to 2021.

Cluster ID	Size	Silhouette value	Mean year	Cluster label	Label (LLR)
0	62	0.81	2010	Brain	Brain; liver fibrosis; transient elastography; biopsy; disease
1	44	0.67	2003	Hepatic fibrosis	Hepatic fibrosis; reconstruction; finite element modeling; liver fibrosis; strain imaging
2	38	0.78	2008	Liver tumor	Liver tumors; diffusion MRI; contrast agent; Diffusion-weighted imaging; prostate imaging
3	36	0.81	2005	Acoustic strain wave	Acoustic strain wave; radiofrequency field gradient; thigh muscle; actuator; contraction
4	32	0.72	2008	MRI	MRI; strain; myocardium; accurate; magnetic resonance elastography
5	25	0.71	2009	Behavior	Brain; behavior; MRI; viscoelasticity; disease
6	21	0.89	2007	In vivo	In vivo; viscoelastic parameters; transient elastography; feasibility; temperature
7	10	0.95	2001	MRE	MRE; meningioma; MR elastography; magnetic resonance elastography; complication
8	9	0.96	2006	Neuromuscular compartment	Neuromuscular compartment; human skeletal muscle; cross sectional area; spinal cord injury; relaxation time
9	8	1	2010	Liver image	Liver imaging; dynamic contrast enhanced MR imaging; MR spectroscopy; functional MR imaging; apparent diffusion coefficient

LLR, log-likelihood ratio; MR, magnetic resonance; MRE, magnetic resonance elastography; MRI, magnetic resonance imaging.