A simulation of the magnetic resonance elastography steady state wave response through idealised atherosclerotic plaques. Thomas-Seale, L‥., Klatt, D., Pankaj, P., Roberts, N., Sack, I., & Hoskins, P‥ IAENG International Journal of Computer Science, 38(4):394-400, 2011. cited By (since 1996)1
A simulation of the magnetic resonance elastography steady state wave response through idealised atherosclerotic plaques [link]Paper  abstract   bibtex   
The clinical assessment of the rupture risk of atherosclerotic plaque is made by imaging the reduction of the lumen; via ultrasound or angiography. It is known that this is an imperfect criterion and that other characteristics of the plaque, such as the change in mechanical properties, may be more relevant. Magnetic Resonance Elastography (MRE) is a novel imaging technique that measures tissue stiffness. Magnetic resonance imaging measures the tissue displacement in response to harmonic shear waves excited on the surface of the body by a vibrating actuator. The images of wave propagation are transformed into an image of stiffness using an inversion algorithm. A steady state analysis was conducted on a simulation of MRE shear waves propagating through an idealised atherosclerotic plaque. The variation of the 2D complex wave response was investigated with regards to stenosis size, lipid pool size and excitation frequency. The detectability of small lipid pools was shown to increase with frequency. However significant wave disruptions were observed at higher excitation frequencies. This study shall form the basis for future work on incorporating an inversion algorithm into the simulation.
@article{ Thomas-Seale2011394,
  author = {Thomas-Seale, L.E.J.a  and Klatt, D.b  and Pankaj, P.c  and Roberts, N.d  and Sack, I.b  and Hoskins, P.R.a },
  title = {A simulation of the magnetic resonance elastography steady state wave response through idealised atherosclerotic plaques},
  journal = {IAENG International Journal of Computer Science},
  year = {2011},
  volume = {38},
  number = {4},
  pages = {394-400},
  note = {cited By (since 1996)1},
  url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-81255144702&partnerID=40&md5=5253b7f489a57e614e109a657e55996b},
  affiliation = {Medical Physics, University of Edinburgh, Chancellor's Building, 49 Little France Crescent, Edinburgh, EH16 4SB, United Kingdom; MR Elastography Group, Charité Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany; School of Engineering, University of Edinburgh, Alexander Graham Bell Building, Edinburgh EH9 3JL, United Kingdom; Clinical Research Imaging Centre, University of Edinburgh, 47 Little France Crescent, Edinburgh, EH16 4SB, United Kingdom},
  abstract = {The clinical assessment of the rupture risk of atherosclerotic plaque is made by imaging the reduction of the lumen; via ultrasound or angiography. It is known that this is an imperfect criterion and that other characteristics of the plaque, such as the change in mechanical properties, may be more relevant. Magnetic Resonance Elastography (MRE) is a novel imaging technique that measures tissue stiffness. Magnetic resonance imaging measures the tissue displacement in response to harmonic shear waves excited on the surface of the body by a vibrating actuator. The images of wave propagation are transformed into an image of stiffness using an inversion algorithm. A steady state analysis was conducted on a simulation of MRE shear waves propagating through an idealised atherosclerotic plaque. The variation of the 2D complex wave response was investigated with regards to stenosis size, lipid pool size and excitation frequency. The detectability of small lipid pools was shown to increase with frequency. However significant wave disruptions were observed at higher excitation frequencies. This study shall form the basis for future work on incorporating an inversion algorithm into the simulation.},
  author_keywords = {Atherosclerosis;  Finite element analysis;  Magnetic resonance elastography;  Plaque rupture;  Shear waves},
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  correspondence_address1 = {Thomas-Seale, L.E.J.; Medical Physics, University of Edinburgh, Chancellor's Building, 49 Little France Crescent, Edinburgh, EH16 4SB, United Kingdom; email: Thomas@sms.ed.ac.uk},
  issn = {1819656X},
  language = {English},
  abbrev_source_title = {IAENG Int. J. Comput. Sci.},
  document_type = {Article},
  source = {Scopus}
}
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