Anatomic M-Mode Echocardiography: A New Approach to Assess Regional Myocardial Function—A Comparative In Vivo and In Vitro Study of Both Fundamental and Second Harmonic Imaging Modes☆,☆☆,★
Section snippets
METHODS
The study contains 2 in vitro and 1 in vivo investigations in normal subjects.
In Vitro Study 1
With AMM, 5 phantoms were studied at 4 different IDs with 3 different insonation frequencies at 7 different ACs. This resulted in a total number of 420 AMM measurements. Because the CMM measurements were done exclusively at 0-degree AC, a total of 60 measurements were performed with CMM. To compare the accuracy of the different AMM measurements with the CMM measurements regarding the single variables (insonation frequency, phantom size, ID, and degree of AC), the results of the AMM measurements
In Vitro Study 1
To date, quantitative assessment of regional myocardial function remains a challenge in echocardiography. Techniques such as the centerline method require off-line analysis and assess only the magnitude of endocardial inward motion. M-Mode measurements with high temporal and spatial resolution are limited to the number of myocardial segments that can be insonated at 90 degrees. Therefore a new technique such as the AMM, which increases the number of measurable myocardial segments, could be a
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Cited by (36)
Lateral M-Mode: Ultrasound Visualization of Displacement Along Longitudinal Direction at Intima–Media Complex
2023, Ultrasound in Medicine and BiologyWithin-day and between-day variability of transthoracic anatomic M-mode echocardiography in the awake bottlenose dolphin (Tursiops truncatus)
2012, Journal of Veterinary CardiologyCitation Excerpt :Nevertheless, despite breath holding, reliable quantitative TEE measurements of ventricular size and function could not be obtained because of inconsistent animal positioning, and only maximal valve diameters could be measured.4 Advances in conventional ultrasound imaging techniques, including AMM echocardiography, have afforded new opportunities for non-invasive cardiac analysis in humans and various animal species.6–11 The standard M-mode provides monodimensional echocardiograms and is commonly used for linear cardiac measurements, including ventricular diameters and myocardial wall thicknesses.
Usefulness of Changes in Left Ventricular Wall Thickness to Predict Full or Partial Pressure Reperfusion in ST-Elevation Acute Myocardial Infarction
2008, American Journal of CardiologyCitation Excerpt :Raw data were stored digitally and analyzed offline (Echopac workstation, GE Vingmed, Horten, Norway). Left ventricular (LV) WT was measured using anatomical M-mode or from the 2-dimensional gray-scale image8 for the 16 standard LV segments.9 EDWT in all infarct-related and remote nonischemic segments was measured using the ECG peak R wave as the reference time point.
Stress Echocardiography with Nonexercise Techniques: Principles, Protocols, Interpretation, and Clinical Applications
2008, Practice of Clinical Echocardiography, Thrid EditionAnalysis of Mitral Annulus Motion Measurements Derived from M-Mode, Anatomic M-Mode, Tissue Doppler Displacement, and 2-Dimensional Strain Imaging
2006, Journal of the American Society of EchocardiographyCitation Excerpt :It generates an M-mode display by reading the 2D pixel samples along the freely positioned cursor line.14 Along a virtual M-mode line, the information of the digitally stored 2D echocardiographic loop is recalculated and then displayed on a temporal axis comparable with the trace obtained by M-mode.17 AC is used to describe the angle between AM-mode line and M-mode line.
Anatomic m-mode, a pertinent tool for the daily practice of transthoracic echocardiography
2004, Journal of the American Society of Echocardiography
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The study was supported by a grant of the Swedish Medical Research Council (No. K97-14X-09481-07AK-U0945). Jörg Strotmann was supported by the German Heart Foundation.
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Reprint requests: Jörg M. Strotmann MD, II Medizinische Klinik/Klinikum Mannheim, Theodor Kutzer-Ufer 1-3, 68135 Mannheim, Germany.
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