1. Frigon A, Rossignol S. Functional plasticity following spinal cord lesions. Prog Brain Res 2006;157:231-260. PMID:
17167915.
2. Elbasiouny SM, Moroz D, Bakr MM, Mushahwar VK. Management of spasticity after spinal cord injury: current techniques and future directions. Neurorehabil Neural Repair 2010;24:23-33. PMID:
19723923.
3. Abbruzzese G. The medical management of spasticity. Eur J Neurol 2002;9(Suppl 1): 30-34. PMID:
11918647.
4. Adams MM, Hicks AL. Spasticity after spinal cord injury. Spinal Cord 2005;43:577-586. PMID:
15838527.
5. Decq P. Pathophysiology of spasticity. Neurochirurgie 2003;49(2-3 Pt 2): 163-184. PMID:
12746691.
6. Dietz V, Sinkjaer T. Spastic movement disorder: impaired reflex function and altered muscle mechanics. Lancet Neurol 2007;6:725-733. PMID:
17638613.
7. Hufschmidt A, Mauritz KH. Chronic transformation of muscle in spasticity: a peripheral contribution to increased tone. J Neurol Neurosurg Psychiatry 1985;48:676-685. PMID:
4031912.
8. Gracies JM. Pathophysiology of spastic paresis. I. Paresis and soft tissue changes. Muscle Nerve 2005;31:535-551. PMID:
15714510.
9. O'Dwyer NJ, Ada L, Neilson PD. Spasticity and muscle contracture following stroke. Brain 1996;119(Pt 5): 1737-1749. PMID:
8931594.
10. Dietz V, Ketelsen UP, Berger W, Quintern J. Motor unit involvement in spastic paresis: relationship between leg muscle activation and histochemistry. J Neurol Sci 1986;75:89-103. PMID:
3746341.
11. Edstrom L. Selective changes in the sizes of red and white muscle fibres in upper motor lesions and Parkinsonism. J Neurol Sci 1970;11:537-550. PMID:
5490728.
12. Lieber RL, Steinman S, Barash IA, Chambers H. Structural and functional changes in spastic skeletal muscle. Muscle Nerve 2004;29:615-627. PMID:
15116365.
13. Nightingale K, McAleavey S, Trahey G. Shear-wave generation using acoustic radiation force: in vivo and ex vivo results. Ultrasound Med Biol 2003;29:1715-1723. PMID:
14698339.
14. Palmeri ML, Wang MH, Dahl JJ, Frinkley KD, Nightingale KR. Quantifying hepatic shear modulus in vivo using acoustic radiation force. Ultrasound Med Biol 2008;34:546-558. PMID:
18222031.
15. Meng W, Zhang G, Wu C, Wu G, Song Y, Lu Z. Preliminary results of acoustic radiation force impulse (ARFI) ultrasound imaging of breast lesions. Ultrasound Med Biol 2011;37:1436-1443. PMID:
21767903.
16. Stock KF, Klein BS, Vo Cong MT, Sarkar O, Romisch M, Regenbogen C, et al. ARFI-based tissue elasticity quantification in comparison to histology for the diagnosis of renal transplant fibrosis. Clin Hemorheol Microcirc 2010;46:139-148. PMID:
21135489.
17. Bota S, Sporea I, Sirli R, Popescu A, Danila M, Sendroiu M, et al. Spleen assessment by Acoustic Radiation Force Impulse Elastography (ARFI) for prediction of liver cirrhosis and portal hypertension. Med Ultrason 2010;12:213-217. PMID:
21203598.
18. Zhai L, Polascik TJ, Foo WC, Rosenzweig S, Palmeri ML, Madden J, et al. Acoustic radiation force impulse imaging of human prostates: initial in vivo demonstration. Ultrasound Med Biol 2012;38:50-61. PMID:
22104533.
19. D'Onofrio M, Gallotti A, Martone E, Pozzi Mucelli R. Solid appearance of pancreatic serous cystadenoma diagnosed as cystic at ultrasound acoustic radiation force impulse imaging. JOP 2009;10:543-546. PMID:
19734634.
20. D'Anastasi M, Schneevoigt BS, Trottmann M, Crispin A, Stief C, Reiser MF, et al. Acoustic radiation force impulse imaging of the testes: a preliminary experience. Clin Hemorheol Microcirc 2011;49:105-114. PMID:
22214682.
21. Friedrich-Rust M, Romenski O, Meyer G, Dauth N, Holzer K, Grunwald F, et al. Acoustic radiation force impulse-imaging for the evaluation of the thyroid gland: a limited patient feasibility study. Ultrasonics 2012;52:69-74. PMID:
21788057.
22. Kot BC, Zhang ZJ, Lee AW, Leung VY, Fu SN. Elastic modulus of muscle and tendon with shear wave ultrasound elastography: variations with different technical settings. PLoS One 2012;7:e44348PMID:
22952961.
23. Friedrich-Rust M, Wunder K, Kriener S, Sotoudeh F, Richter S, Bojunga J, et al. Liver fibrosis in viral hepatitis: noninvasive assessment with acoustic radiation force impulse imaging versus transient elastography. Radiology 2009;252:595-604. PMID:
19703889.
24. Palmeri ML, Wang MH, Rouze NC, Abdelmalek MF, Guy CD, Moser B, et al. Noninvasive evaluation of hepatic fibrosis using acoustic radiation force-based shear stiffness in patients with nonalcoholic fatty liver disease. J Hepatol 2011;55:666-672. PMID:
21256907.
25. Shen ZL, Vince DG, Li ZM. In vivo study of transverse carpal ligament stiffness using acoustic radiation force impulse (ARFI) imaging. PLoS One 2013;8:e68569PMID:
23861919.
26. Akagi R, Chino K, Dohi M, Takahashi H. Relationships between muscle size and hardness of the medial gastrocnemius at different ankle joint angles in young men. Acta Radiol 2012;53:307-311. PMID:
22302209.
27. Arda K, Ciledag N, Aktas E, Aribas BK, Kose K. Quantitative assessment of normal soft-tissue elasticity using shear-wave ultrasound elastography. AJR Am J Roentgenol 2011;197:532-536. PMID:
21862792.
28. Kwon DR, Park GY, Lee SU, Chung I. Spastic cerebral palsy in children: dynamic sonoelastographic findings of medial gastrocnemius. Radiology 2012;263:794-801. PMID:
22495685.
29. Booth CM, Cortina-Borja MJ, Theologis TN. Collagen accumulation in muscles of children with cerebral palsy and correlation with severity of spasticity. Dev Med Child Neurol 2001;43:314-320. PMID:
11368484.
30. Gagliano N, Pelillo F, Chiriva-Internati M, Picciolini O, Costa F, Schutt RC Jr, et al. Expression profiling of genes involved in collagen turnover in tendons from cerebral palsy patients. Connect Tissue Res 2009;50:203-208. PMID:
19444761.
31. Scelsi R. Skeletal muscle pathology after spinal cord injury: our 20 year experience and results on skeletal muscle changes in paraplegics, related to functional rehabilitation. Basic Appl Myol 2001;11:75-85.
32. Guzman-Aroca F, Reus M, Berna-Serna JD, Serrano L, Serrano C, Gilabert A, et al. Reproducibility of shear wave velocity measurements by acoustic radiation force impulse imaging of the liver: a study in healthy volunteers. J Ultrasound Med 2011;30:975-979. PMID:
21705730.