Summary
The left ventricular radial strain in the inner and outer layers was evaluated by using two-dimensional speckle tracking imaging (2DS). Twenty-five piglets were studied. The short axis views were acquired. Peak systolic radial strain was measured from 6 circumferential points related to 6 standard segments in the inner and outer layers respectively using 2DS methods. The peak positive first derivative (dp/dt) of left ventricular pressure was compared to the radial strain from 2DS. The inner band showed higher peak radial strain values as compared to the outer band at all of the segments (P<0.0001), but the differences had significance just in anteroseptal, posterior, inferior and septal segments (P<0.05). Good correlation could be found between radial strain of inner and outer layers and peak dp/dt (P<0.001). These preliminary results showed that the degree of local deformation or wall thickening of the ventricular wall in its inner layer was more obvious than its outer layer. It is suggested that the 2DS technique is useful and sensitive for better understanding the regional and global myocardial motion and its relationship to the complex architecture of myocardium.
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Tabata T, Oki T, Yamada H, et al. Subendocardial motion in hypertrophic cardiomyopathy: assessment from long-and short-axis views by pulsed tissue Doppler imaging. J AmSoc Echocardiogr, 2000,13(2):108–115
Vinereanu D, Florescu N, Sculthorpe N, et al. Differentiation between pathologic and physiologic left ventricular hypertrophy by tissue Doppler assessment of long axis function in patients with hypertrophic cardiomyopathy or systemic hypertension and in athletes. Am J Cardiol, 2001,88(1):53–58
Hashimoto I, Li XK, Bhat AH, et al. Myocardial strain rate is a superior method for evaluation of left ventricular subendocardial function compared with tissue Doppler imaging. J Am Coll Cardiol, 2003,42(9):1574–1583
Matre K, Fannelop T, Dahle GO, et al. Radial strain gradient across the normal myocardial wall in open-chest pigs measured with Doppler strain rate imaging. J Am Soc Echocardiogr, 2005,18(10):1066–1073
Pan M, Deng YB, Li ChL, et al. Detection of left ventricular regional relaxation abnormalities in patients with hypertrophic cardiomyopathy by quantitative tissue velocity imaging. J Huazhong Univ Sci Technol Med Sci, 2004,24(2):185–188
Marwick TH. Measurement of strain and strain rate by echocardiography: ready for prime time? J Am Coll Cardiol, 2006,47(7):1313–1327
Toulany A, Shea S, Warren AE. Doppler tissue, strain, and strain rate imaging in pediatric patients with Alstrom syndrome: are there regional functional abnormalities? J Am Soc Echocardiogr, 2006,19(1):14–20
Weidemann F, Broscheit JA, Bijnens B, et al. How to distinguish between ischemic and nonischemic postsystolic thickening: A strain rate imaging study. Ultrasound Med Biol, 2006,32(1):53–59
www.medisin.ntnu.no/~stoylen
Becker M, Bilke E, Kuhl H, et al. Analysis of myocardial deformation based on pixel tracking in 2 dimensional echocardiographic images enables quantitative assessment of regional left ventricular function. Heart, 2006,92(8):1102–1108
Langeland S, D’hooge J, Wouters PF, et al. Experimental validation of a new ultrasound method for the simultaneous assessment of radial and longitudinal myocardial deformation independent of insonation angle. Circulation, 2005,112(5):2157–2162
Toyoda T, Baba H, Akasaka T, et al. Assessment of regional myocardial strain by a novel automated tracking system from digital image files. J Am Soc Echocardiogr, 2004,17(9):1234–1238
Serri K, Reant P, Lafitte M, et al. Global and regional myocardial function quantification by two-dimensional strain application in hypertrophic cardiomyopathy. J Am Coll Cardiol, 2006,47(8):1175–1181
Ma H, Xie MX, Wang J, et al. Ultrasound speckle tracking imaging contributes to early diagnosis of impaired left ventricular systolic function in patients with type 2 diabetes mellitus. J Huazhong Univ Sci and Technol Med Sci, 2008,28(6):719–723
Suffoletto MS, Dohi K, Cannesson M, et al. Novel speckle-tracking radial strain from routine black-andwhite echocardiographic images to quantify dyssynchrony and predict response to cardiac resynchronization therapy. Circulation, 2006,113(7):960–968
Dohi K, Suffoletto MS, Schwartzman D, et al. Utility of echocardiographic radial strain imaging to quantify left ventricular dyssynchrony and predict acute response to cardiac resynchronization therapy. Am J Cardiol, 2005, 96(1):112–116
Bovendeerd PH, Huyghe JM, Arts T, et al. Influence of endocardial-epicardial crossover of muscle fibers on left ventricular wall mechanics. J Biomech, 1994,27(7): 941–951
Mirsky I, Parmley WW. Assessment of passive elastic stiffness for isolated heart muscle and the intact heart. Circ Res, 1973,33(2):233–243
Buckberg GD, Coghlan HC, Torrent-Guasp F. The structure and function of the helical heart and its buttress wrapping. V. Anatomic and physiologic considerations in the healthy and failing heart. Semin Thorac Cardiovasc Surg, 2001,13(4):358–385
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Pan, M., Luo, H., Muhammad, A. et al. Assessment of left ventricular radial deformation by speckle tracking imaging. J. Huazhong Univ. Sci. Technol. [Med. Sci.] 29, 669–672 (2009). https://doi.org/10.1007/s11596-009-0527-0
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DOI: https://doi.org/10.1007/s11596-009-0527-0