Kazuaki Negishi et al. JIMG 2015;8:

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Nonischemic regional wall motion abnormality - LBBB

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Presentation transcript:

Kazuaki Negishi et al. JIMG 2015;8:489-492 Location of ROI 2: Tracing Papillary Muscles (2CV) The pitfall here is the inclusion of the papillary muscle (A), which is leading to an exaggeration of apical motion. (B) Appropriate location is shown (Online Videos 3A and 3B). Lesson: remember that the tracking algorithm is partially informed by the expected contour of the left ventricle. Deviations from the expected left ventricular shape may cause tracking problems and may require extra attention to tracking. It is always helpful to compare wall motion with the strain waveforms and bull’s eye map visually and to ascertain whether they agree. In doing this, keep in mind that global longitudinal strain is different from ejection fraction, and it is important to focus on the longitudinal movement of the wall, rather than entire (radial or transverse) wall motion. 2CH = 2-chamber; 2CV = 2-chamber view; AntAP = anterior-apical; AVC = aortic valve closure; ROI = region of interest. Kazuaki Negishi et al. JIMG 2015;8:489-492 2015 American College of Cardiology Foundation