Vibration-synchronized magnetic resonance imaging for the detection of myocardial elasticity changes. Elgeti, T., Tzschätzsch, H., Hirsch, S., Krefting, D., Klatt, D., Niendorf, d, T., Braun, J., & Sack, I. Magnetic Resonance in Medicine, 67(4):919-924, 2012. cited By (since 1996)0
Vibration-synchronized magnetic resonance imaging for the detection of myocardial elasticity changes [link]Paper  doi  abstract   bibtex   
Vibration synchronized magnetic resonance imaging of harmonically oscillating tissue interfaces is proposed for cardiac magnetic resonance elastography. The new approach exploits cardiac triggered cine imaging synchronized with extrinsic harmonic stimulation (f = 22.83 Hz) to display oscillatory tissue deformations in magnitude images. Oscillations are analyzed by intensity threshold-based image processing to track wave amplitude variations over the cardiac cycle. In agreement to literature data, results in 10 volunteers showed that endocardial wave amplitudes during systole (0.13 ± 0.07 mm) were significantly lower than during diastole (0.34 ± 0.14 mm, P < 0.001). Wave amplitudes were found to decrease 117 ± 40 ms before myocardial contraction and to increase 75 ± 31 ms before myocardial relaxation. Vibration synchronized magnetic resonance imaging improves the temporal resolution of magnetic resonance elastography as it overcomes the use of extra motion encoding gradients, is less sensitive to susceptibility artifacts, and does not suffer from dynamic range constraints frequently encountered in phase-based magnetic resonance elastography. © 2011 Wiley Periodicals, Inc.
@article{ Elgeti2012919,
  author = {Elgeti, T.a  and Tzschätzsch, H.a  and Hirsch, S.a  and Krefting, D.b  and Klatt, D.a  and Niendorf, T.c  d  and Braun, J.b  and Sack, I.a },
  title = {Vibration-synchronized magnetic resonance imaging for the detection of myocardial elasticity changes},
  journal = {Magnetic Resonance in Medicine},
  year = {2012},
  volume = {67},
  number = {4},
  pages = {919-924},
  note = {cited By (since 1996)0},
  url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84859108999&partnerID=40&md5=7362cee613509db3383e8b81971bcf21},
  affiliation = {Department of Radiology, CharitéUniversitätsmedizin Berlin, Campus Mitte, Charitéplatz 1, 10117 Berlin, Germany; Institute of Medical Informatics, CharitéUniversitätsmedizin Berlin, Campus Benjamin Franklin, 12200 Berlin, Germany; Berlin Ultrahigh Field Facility (B.U.F.F.), Max-Delbruck Center for Molecular Medicine, 13125 Berlin, Germany; Experimental and Clinical Research Center, Charité Medical Faculty, Max-Delbruck Center for Molecular Medicine, Berlin, Germany},
  abstract = {Vibration synchronized magnetic resonance imaging of harmonically oscillating tissue interfaces is proposed for cardiac magnetic resonance elastography. The new approach exploits cardiac triggered cine imaging synchronized with extrinsic harmonic stimulation (f = 22.83 Hz) to display oscillatory tissue deformations in magnitude images. Oscillations are analyzed by intensity threshold-based image processing to track wave amplitude variations over the cardiac cycle. In agreement to literature data, results in 10 volunteers showed that endocardial wave amplitudes during systole (0.13 ± 0.07 mm) were significantly lower than during diastole (0.34 ± 0.14 mm, P < 0.001). Wave amplitudes were found to decrease 117 ± 40 ms before myocardial contraction and to increase 75 ± 31 ms before myocardial relaxation. Vibration synchronized magnetic resonance imaging improves the temporal resolution of magnetic resonance elastography as it overcomes the use of extra motion encoding gradients, is less sensitive to susceptibility artifacts, and does not suffer from dynamic range constraints frequently encountered in phase-based magnetic resonance elastography. © 2011 Wiley Periodicals, Inc.},
  author_keywords = {cardiac elastography;  heart contraction;  MRE;  myocardial relaxation;  shear modulus;  shear waves;  time harmonic vibrations},
  keywords = {adult;  article;  cineradiography;  diastole;  elasticity;  elastography;  endocardium;  heart contraction;  heart cycle;  heart muscle cell;  human;  human experiment;  image processing;  male;  motion;  normal human;  nuclear magnetic resonance imaging;  oscillation;  systole;  vibration;  waveform, Adult;  Artifacts;  Elastic Modulus;  Elasticity Imaging Techniques;  Humans;  Magnetic Resonance Imaging, Cine;  Male;  Middle Aged;  Myocardial Contraction;  Statistics, Nonparametric;  Ventricular Function, Left;  Vibration},
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  correspondence_address1 = {Sack, I.; Department of Radiology, CharitéUniversitätsmedizin Berlin, Campus Mitte, Charitéplatz 1, 10117 Berlin, Germany; email: ingolf.sack@charite.de},
  issn = {07403194},
  coden = {MRMEE},
  doi = {10.1002/mrm.24185},
  pubmed_id = {22294295},
  language = {English},
  abbrev_source_title = {Magn. Reson. Med.},
  document_type = {Article},
  source = {Scopus}
}
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