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Insights from echocardiography, magnetic resonance imaging, and microcomputed tomography relative to the mid-myocardial left ventricular echogenic zone.

Agger, P and Stephenson, RS and Dobrzynski, H and Atkinson, A and Iaizzo, PA and Anderson, RH and Jarvis, JC and Allan, SL and Partridge, JB and Zhao, J and Zhang, H and MacIver, DH (2016) Insights from echocardiography, magnetic resonance imaging, and microcomputed tomography relative to the mid-myocardial left ventricular echogenic zone. Echocardiography, 33 (10). pp. 1546-1556. ISSN 0742-2822

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Insights from echocardiography, magnetic resonance imaging and micro-computed tomography relative to the mid-myocardial left ventricular echogenic zone .pdf - Accepted Version

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Abstract

BACKGROUND: The anatomical substrate for the mid-mural ventricular hyperechogenic zone remains uncertain, but it may represent no more than ultrasound reflected from cardiomyocytes orientated orthogonally to the ultrasonic beam. We sought to ascertain the relationship between the echogenic zone and the orientation of the cardiomyocytes. METHODS: We used 3D echocardiography, diffusion tensor imaging, and microcomputed tomography to analyze the location and orientation of cardiomyocytes within the echogenic zone. RESULTS: We demonstrated that visualization of the echogenic zone is dependent on the position of the transducer and is most clearly seen from the apical window. Diffusion tensor imaging and microcomputed tomography show that the echogenic zone seen from the apical window corresponds to the position of the circumferentially orientated cardiomyocytes. An oblique band seen in the parasternal view relates to cardiomyocytes orientated orthogonally to the ultrasonic beam. CONCLUSIONS: The mid-mural ventricular hyperechogenic zone represents reflected ultrasound from cardiomyocytes aligned orthogonal to the ultrasonic beam. The echogenic zone does not represent a space, a connective tissue sheet, a boundary between ascending and descending limbs of a hypothetical helical ventricular myocardial band, nor an abrupt change in cardiomyocyte orientation.

Item Type: Article
Additional Information: This is the accepted version of the following article: Agger, P., Stephenson, R. S., Dobrzynski, H., Atkinson, A., Iaizzo, P. A., Anderson, R. H., Jarvis, J. C., Allan, S. L, Partridge, J. B, Zhao, J., Zhang, H., MacIver, D. H. (2016), Insights from echocardiography, magnetic resonance imaging, and microcomputed tomography relative to the mid-myocardial left ventricular echogenic zone. Echocardiography, 33: 1546–1556. doi: 10.1111/echo.13324], which has been published in final form at http://dx.doi.org/10.1111/echo.13324
Uncontrolled Keywords: 1102 Cardiovascular Medicine And Haematology
Subjects: R Medicine > R Medicine (General)
Divisions: Sport & Exercise Sciences
Publisher: Wiley
Related URLs:
Date Deposited: 25 Nov 2016 11:34
Last Modified: 26 Oct 2017 00:50
DOI or Identification number: 10.1111/echo.13324
URI: http://researchonline.ljmu.ac.uk/id/eprint/4864

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