Ultrasound in Medicine and Biology
Volume 34, Issue 11 , Pages 1741-1751, November 2008

A New Tissue Doppler Method for Examination of Left Ventricular Rotation

  • Jonas Crosby

      Affiliations

    • Department of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway
    • Corresponding Author InformationAddress correspondence to: Jonas Crosby, Department of Circulation and Medical Imaging, MTFS, N-7489 Trondheim, Norway
    • ,
  • Brage H. Amundsen

      Affiliations

    • Department of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway
    • ,
  • Thomas Helle-Valle

      Affiliations

    • Institute for Surgical Research, Department of Cardiology, Rikshospitalet University Hospital, Oslo, Norway
    • ,
  • Per Arvid Steen

      Affiliations

    • St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
    • ,
  • Hans Torp

      Affiliations

    • Department of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway

Received 2 October 2007; received in revised form 7 March 2008; accepted 24 March 2008. published online 12 June 2008.

Abstract 

This paper introduces a new semiautomatic method for assessing regional left ventricular (LV) rotation that uses the velocity field provided by tissue Doppler imaging (TDI). Left ventricular end-systolic angle of twist estimated by the new method has been compared with rotation by magnetic resonance imaging (MRI) tagging, by 2-D speckle tracking echocardiography (STE) and by a TDI method using the velocity difference between the tangential points on the LV circumference in 21 human subjects. The new TDI method gave lower absolute values for end-systolic twist angle than MRI and STE (agreement −4.1 ± 2.1° and −2.5 ± 4.0°, respectively). The reproducibility of the new method was as good as for MRI and STE, but worse than the use of TDI velocities in tangential points. The present study has shown that TDI methods constitute useful alternatives to speckle tracking and MRI, and should be considered in future studies of LV twist and rotation. (E-mail: jonas.crosby@ntnu.no)

Key Words: Echocardiography, Left ventricular function, Magnetic resonance imaging, Left ventricular torsion, Left ventricular rotation, Tissue Doppler imaging

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PII: S0301-5629(08)00183-X

doi:10.1016/j.ultrasmedbio.2008.03.022

Ultrasound in Medicine and Biology
Volume 34, Issue 11 , Pages 1741-1751, November 2008

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