Multiscale Motion Mapping (“Triple-M Imaging”): A Novel Echo Imaging Mode Featuring Quantitative Echo Motion Display Independent from Borders and Doppler
C. Jansen, M. Sühling, M. Arigovindan, P. Buser, M. Unser, P. Hunziker
Young investigator award of the Working Group on Echocardiography of the European Society of Cardiology, Proceedings of the Sixth Annual and Plenary Meeting of the Working Group on Echocardiography of the European Society of Cardiology (EUROECHO6'02), Münich, Federal Republic of Germany, December 4-7, 2002, [European Journal of Echocardiography, vol. 3, supp. 1, December 2002], pp. 122.
Young Investigator Award of the Working Group on Echocardiography of the European Society of Cardiology
Abstract: Measurement of cardiac motion is fundamental for echo and relies usually on tissue Doppler (limited by angle dependence) or border detection (limited by endocardial visibility).
Methods: A new echo imaging modality termed Multiscale Motion Mapping (“Triple-M imaging”) was developed. It combines multiscale optical flow techniques, spline imaging and comprehensive mathematical analysis in space and time. It yields quantitative motion maps which are neither angle dependent nor rely on endocardial borders. This allows observation and quantitation of motion in any portion of an echo image. After validation in a rotating phantom, the technique was applied to clinical ultrasound images.
Results: In the rotating phantom, the radial velocity increase and the circumferentially constant motion was correctly displayed, in contrast to simultaneous tissue Doppler imaging which showed only velocity components parallel to the beam. In clinical echo loops, comprehensive motion information became visible: pericardial, myocardial, endocardial, valvular and anular trajectories coincided with known motion and agreed with expert analysis of the same loops. Phenomena not accessible conventionally became evident, like the circular motion of the mitral annuli and the complex myocardial motion pattern with components both inward and towards the apex. Rotational motion components of the heart in short axis view became visible as well.
Conclusion: Triple-M Imaging is an exciting new echo imaging modality that features Doppler- and border independent motion maps, allowing quantitative assessment of cardiac motion phenomena inaccessible to current technology. This promises new pathophysiologic insights and applicability in a wide field of ranging from routine to quantitative stress echo.
@INPROCEEDINGS(http://bigwww.epfl.ch/publications/jansen0201.html,
AUTHOR="Jansen, C. and S{\"{u}}hling, M. and Arigovindan, M. and Buser,
P. and Unser, M. and Hunziker, P.",
TITLE="Multiscale Motion Mapping (``Triple-{M} Imaging''): {A} Novel
Echo Imaging Mode Featuring Quantitative Echo Motion Display
Independent from Borders and {D}oppler",
BOOKTITLE="Sixth Annual and Plenary Meeting of the Working Group on
Echocardiography of the European Society of Cardiology
({EUROECHO6'02})",
YEAR="2002",
editor="",
volume="3, supp. 1",
series="European Journal of Echocardiography",
pages="122",
address="M{\"{u}}nich, Federal Republic of Germany",
month="December 4-7,",
organization="",
publisher="",
note="Young investigator award of the Working Group on Echocardiography
of the European Society of Cardiology")