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Ruth J. Okamoto - Publications

Affiliations: 
Washington University, Saint Louis, St. Louis, MO 
Area:
Biomedical Engineering, Medicine and Surgery
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44 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2020 McGarry MDJ, Van Houten E, Guertler C, Okamoto RJ, Smith DR, Sowinski DR, Johnson CL, Bayly P, Weaver J, Paulsen KD. A heterogenous, time harmonic, nearly incompressible transverse isotropic finite element brain simulation platform for MR elastography. Physics in Medicine and Biology. PMID 32512548 DOI: 10.1088/1361-6560/Ab9A84  0.418
2020 Smith D, Guertler CA, Okamoto RJ, Romano A, Bayly PV, Johnson CL. Multi-Excitation MR Elastography of the Brain: Wave Propagation in Anisotropic White Matter. Journal of Biomechanical Engineering. PMID 32006012 DOI: 10.1115/1.4046199  0.348
2020 Guertler CA, Okamoto RJ, Ireland J, Pacia C, Garbow JR, Chen H, Bayly PV. Estimation of Anisotropic Material Properties of Soft Tissue by Mri of Ultrasound-induced Shear Waves. Journal of Biomechanical Engineering. PMID 31980814 DOI: 10.1115/1.4046127  0.394
2019 Hou Z, Okamoto RJ, Bayly PV. Shear Wave Propagation and Estimation of Material Parameters in a Nonlinear, Fibrous Material. Journal of Biomechanical Engineering. PMID 31513702 DOI: 10.1115/1.4044504  0.351
2019 Okamoto RJ, Romano AJ, Johnson CL, Bayly PV. Insights Into Traumatic Brain Injury From MRI of Harmonic Brain Motion. Journal of Experimental Neuroscience. 13: 1179069519840444. PMID 31001064 DOI: 10.1177/1179069519840444  0.357
2018 Badachhape A, Okamoto R, Durham RS, Efron BD, Nadell SJ, Johnson CL, Bayly PV. Calibration error due to different motion-encoding gradient strength on two scanners. Journal of Biomechanical Engineering. PMID 30098153 DOI: 10.1115/1.4040947  0.317
2018 Beauchemin PF, Bayly PV, Garbow JR, Schmidt JLS, Okamoto RJ, Chériet F, Périé D. Frequency-dependent shear properties of annulus fibrosus and nucleus pulposus by magnetic resonance elastography. Nmr in Biomedicine. e3918. PMID 29727498 DOI: 10.1002/Nbm.3918  0.368
2018 Badachhape AA, Okamoto RJ, Johnson CL, Bayly PV. Relationships between scalp, brain, and skull motion estimated using magnetic resonance elastography. Journal of Biomechanics. PMID 29580689 DOI: 10.1016/J.Jbiomech.2018.03.028  0.311
2018 Guertler CA, Okamoto RJ, Schmidt JL, Badachhape AA, Johnson CL, Bayly PV. Mechanical properties of porcine brain tissue in vivo and ex vivo estimated by MR elastography. Journal of Biomechanics. PMID 29395225 DOI: 10.1016/J.Jbiomech.2018.01.016  0.406
2017 Schmidt JL, Tweten DJ, Badachhape AA, Reiter AJ, Okamoto RJ, Garbow JR, Bayly PV. Measurement of anisotropic mechanical properties in porcine brain white matter ex vivo using magnetic resonance elastography. Journal of the Mechanical Behavior of Biomedical Materials. 79: 30-37. PMID 29253729 DOI: 10.1016/J.Jmbbm.2017.11.045  0.431
2017 Badachhape AA, Okamoto RJ, Durham RS, Efron BD, Nadell SJ, Johnson CL, Bayly PV. The Relationship of 3D Human Skull Motion to Brain Tissue Deformation in Magnetic Resonance Elastography Studies. Journal of Biomechanical Engineering. PMID 28267188 DOI: 10.1115/1.4036146  0.366
2017 Xu G, Wilson KS, Okamoto RJ, Shao J, Dutcher SK, Bayly PV. Apparent Flexural Rigidity of Single Flagella Depends on Inter-Doublet Shear Stiffness Biophysical Journal. 112: 269a. DOI: 10.1016/J.Bpj.2016.11.1461  0.406
2016 Garcia KE, Okamoto RJ, Bayly PV, Taber LA. Contraction and stress-dependent growth shape the forebrain of the early chicken embryo. Journal of the Mechanical Behavior of Biomedical Materials. 65: 383-397. PMID 27639481 DOI: 10.1016/J.Jmbbm.2016.08.010  0.339
2016 Xu G, Wilson KS, Okamoto RJ, Shao JY, Dutcher SK, Bayly PV. Flexural Rigidity and Shear Stiffness of Flagella Estimated from Induced Bends and Counterbends. Biophysical Journal. 110: 2759-2768. PMID 27332134 DOI: 10.1016/J.Bpj.2016.05.017  0.358
2016 Feng Y, Okamoto RJ, Genin GM, Bayly PV. On the accuracy and fitting of transversely isotropic material models. Journal of the Mechanical Behavior of Biomedical Materials. 61: 554-566. PMID 27136091 DOI: 10.1016/J.Jmbbm.2016.04.024  0.382
2016 Schmidt JL, Tweten DJ, Benegal AN, Walker CH, Portnoi TE, Okamoto RJ, Garbow JR, Bayly PV. Magnetic resonance elastography of slow and fast shear waves illuminates differences in shear and tensile moduli in anisotropic tissue. Journal of Biomechanics. 49: 1042-9. PMID 26920505 DOI: 10.1016/J.Jbiomech.2016.02.018  0.418
2015 Tweten DJ, Okamoto RJ, Schmidt JL, Garbow JR, Bayly PV. Estimation of material parameters from slow and fast shear waves in an incompressible, transversely isotropic material. Journal of Biomechanics. PMID 26476762 DOI: 10.1016/J.Jbiomech.2015.09.009  0.346
2015 Zhu C, Ganguly A, Baskin TI, McClosky DD, Anderson CT, Foster C, Meunier KA, Okamoto R, Berg H, Dixit R. The fragile Fiber1 kinesin contributes to cortical microtubule-mediated trafficking of cell wall components. Plant Physiology. 167: 780-92. PMID 25646318 DOI: 10.1104/Pp.114.251462  0.316
2014 Filas BA, Zhang Q, Okamoto RJ, Shui YB, Beebe DC. Enzymatic degradation identifies components responsible for the structural properties of the vitreous body. Investigative Ophthalmology & Visual Science. 55: 55-63. PMID 24222300 DOI: 10.1167/Iovs.13-13026  0.359
2013 Feng Y, Okamoto RJ, Namani R, Genin GM, Bayly PV. Measurements of mechanical anisotropy in brain tissue and implications for transversely isotropic material models of white matter. Journal of the Mechanical Behavior of Biomedical Materials. 23: 117-32. PMID 23680651 DOI: 10.1016/J.Jmbbm.2013.04.007  0.403
2013 Clayton EH, Okamoto RJ, Bayly PV. Mechanical properties of viscoelastic media by local frequency estimation of divergence-free wave fields. Journal of Biomechanical Engineering. 135: 021025. PMID 23445070 DOI: 10.1115/1.4023433  0.383
2013 Feng Y, Clayton EH, Chang Y, Okamoto RJ, Bayly PV. Viscoelastic properties of the ferret brain measured in vivo at multiple frequencies by magnetic resonance elastography. Journal of Biomechanics. 46: 863-70. PMID 23352648 DOI: 10.1016/J.Jbiomech.2012.12.024  0.408
2013 Feng Y, Okamoto R, Du D, Mutic S, Genin G, Bayly P, Hu Y. SU-E-J-201: Correlations Between Mechanical and Structural Anisotropy: A Foundation for Non-Invasively Assessing Radiation Injury Medical Physics. 40: 197-197. DOI: 10.1118/1.4814413  0.368
2012 Namani R, Feng Y, Okamoto RJ, Jesuraj N, Sakiyama-Elbert SE, Genin GM, Bayly PV. Elastic characterization of transversely isotropic soft materials by dynamic shear and asymmetric indentation. Journal of Biomechanical Engineering. 134: 061004. PMID 22757501 DOI: 10.1115/1.4006848  0.412
2012 Filas BA, Oltean A, Beebe DC, Okamoto RJ, Bayly PV, Taber LA. A potential role for differential contractility in early brain development and evolution. Biomechanics and Modeling in Mechanobiology. 11: 1251-62. PMID 22466353 DOI: 10.1007/S10237-012-0389-4  0.316
2012 Xu G, Wilson KS, Okamoto RJ, Shao J, Dutcher SK, Bayly PV. Flexural Rigidity and Shear Stiffness of Flagella Biophysical Journal. 102: 414a. DOI: 10.1016/J.Bpj.2011.11.2265  0.399
2012 Clayton EH, Wang Q, Song SK, Okamoto RJ, Bayly PV. Magnetic resonance elastography of the mouse vitreous humor in vivo Conference Proceedings of the Society For Experimental Mechanics Series. 4: 129-133.  0.317
2012 Clayton EH, Okamoto RJ, Wilson KS, Namani R, Bayly PV. Comparison of dynamic mechanical testing and MR elastography of biomaterials Conference Proceedings of the Society For Experimental Mechanics Series. 4: 143-150.  0.362
2011 Okamoto RJ, Clayton EH, Bayly PV. Viscoelastic properties of soft gels: comparison of magnetic resonance elastography and dynamic shear testing in the shear wave regime. Physics in Medicine and Biology. 56: 6379-400. PMID 21908903 DOI: 10.1088/0031-9155/56/19/014  0.339
2011 Abney TM, Feng Y, Pless R, Okamoto RJ, Genin GM, Bayly PV. Principal component analysis of dynamic relative displacement fields estimated from MR images. Plos One. 6: e22063. PMID 21811560 DOI: 10.1371/Journal.Pone.0022063  0.32
2011 Bayly PV, Lewis BL, Ranz EC, Okamoto RJ, Pless RB, Dutcher SK. Propulsive forces on the flagellum during locomotion of Chlamydomonas reinhardtii. Biophysical Journal. 100: 2716-25. PMID 21641317 DOI: 10.1016/J.Bpj.2011.05.001  0.375
2010 Feng Y, Abney TM, Okamoto RJ, Pless RB, Genin GM, Bayly PV. Relative brain displacement and deformation during constrained mild frontal head impact. Journal of the Royal Society, Interface / the Royal Society. 7: 1677-88. PMID 20504801 DOI: 10.1098/Rsif.2010.0210  0.339
2009 Zheng J, Abendschein DR, Okamoto RJ, Yang D, McCommis KS, Misselwitz B, Gropler RJ, Tang D. MRI-based biomechanical imaging: initial study on early plaque progression and vessel remodeling. Magnetic Resonance Imaging. 27: 1309-18. PMID 19559552 DOI: 10.1016/J.Mri.2009.05.032  0.371
2008 Zheng J, Abendschein DR, Okamoto RJ, Yang D, McCommis KS, Misselwitz B, Gropler RJ, Tang D. 2101 Role of hemodynamic forces on plaque development: non-invasive assessment with MRI methods Journal of Cardiovascular Magnetic Resonance. 10. DOI: 10.1186/1532-429X-10-S1-A370  0.336
2007 Wagenseil JE, Okamoto RJ. Modeling cell and matrix anisotropy in fibroblast populated collagen vessels. Biomechanics and Modeling in Mechanobiology. 6: 151-62. PMID 16520963 DOI: 10.1007/S10237-006-0019-0  0.667
2006 Wille JJ, Elson EL, Okamoto RJ. Cellular and matrix mechanics of bioartificial tissues during continuous cyclic stretch. Annals of Biomedical Engineering. 34: 1678-90. PMID 17033741 DOI: 10.1007/S10439-006-9153-1  0.615
2005 Wagenseil JE, Nerurkar NL, Knutsen RH, Okamoto RJ, Li DY, Mecham RP. Effects of elastin haploinsufficiency on the mechanical behavior of mouse arteries. American Journal of Physiology. Heart and Circulatory Physiology. 289: H1209-17. PMID 15863465 DOI: 10.1152/Ajpheart.00046.2005  0.601
2004 Bayly PV, Ji S, Song SK, Okamoto RJ, Massouros P, Genin GM. Measurement of strain in physical models of brain injury: A method based on HARP analysis of tagged magnetic resonance images (MRI) Journal of Biomechanical Engineering. 126: 523-528. PMID 15543872 DOI: 10.1115/1.1785811  0.353
2004 Wagenseil JE, Elson EL, Okamoto RJ. Cell orientation influences the biaxial mechanical properties of fibroblast populated collagen vessels. Annals of Biomedical Engineering. 32: 720-31. PMID 15171626 DOI: 10.1023/B:Abme.0000030237.20057.3E  0.669
2003 Wagenseil JE, Wakatsuki T, Okamoto RJ, Zahalak GI, Elson EL. One-dimensional viscoelastic behavior of fibroblast populated collagen matrices. Journal of Biomechanical Engineering. 125: 719-25. PMID 14618931 DOI: 10.1115/1.1614818  0.682
2003 Okamoto RJ, Xu H, Kouchoukos NT, Moon MR, Sundt TM. The influence of mechanical properties on wall stress and distensibility of the dilated ascending aorta. The Journal of Thoracic and Cardiovascular Surgery. 126: 842-50. PMID 14502164 DOI: 10.1016/S0022-5223(03)00728-1  0.319
2002 Okamoto RJ, Wagenseil JE, DeLong WR, Peterson SJ, Kouchoukos NT, Sundt TM. Mechanical properties of dilated human ascending aorta. Annals of Biomedical Engineering. 30: 624-35. PMID 12108837 DOI: 10.1114/1.1484220  0.621
2000 Okamoto RJ, Moulton MJ, Peterson SJ, Li D, Pasque MK, Guccione JM. Epicardial suction: a new approach to mechanical testing of the passive ventricular wall. Journal of Biomechanical Engineering. 122: 479-87. PMID 11091948 DOI: 10.1115/1.1289625  0.387
2000 Peterson SJ, Okamoto RJ. Effect of residual stress and heterogeneity on circumferential stress in the arterial wall. Journal of Biomechanical Engineering. 122: 454-6. PMID 11036572 DOI: 10.1115/1.1288210  0.301
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