title: Are measurements of systolic myocardial velocities and displacement with colour and spectral Tissue Doppler compatible?
abstract: BACKGROUND
  Tissue Doppler (TD) in pulsed mode (spectral TD) and colour TD are the two modalities today available in tissue velocity echocardiography (TVE). Previous studies have shown poor agreement between these two methods when measuring myocardial velocities and displacement. In this study, the concordance between the myocardial velocity and displacement measurements using colour TD and different spectral TD procedures was evaluated.
  
  
  METHODS
  Left ventricular (LV) longitudinal systolic myocardial velocities and displacement during ejection period were quantified at the basal septal and lateral wall in 24 healthy individuals (4 women and 20 men, 34 +/- 12 years) using spectral TD, colour TD and M-mode recordings. Mean, maximal and minimal spectral TD systolic velocities and the corresponding displacement values were obtained by measurements at the outer and inner borders of the spectral velocity signal. The results were then compared with those obtained with the two other modalities used.
  
  
  RESULTS
  Systolic myocardial velocities derived from mean spectral TD frequencies were highly concordant with corresponding colour TD measurements (mean difference 0.10 +/- 0.54 cm/sec in septal and 0.09 +/- 0.97 cm/sec in lateral wall). Similarly, the agreement between spectral and colour TD (mean difference 0.22 +/- 0.74 mm in septal and 0.02 +/- 0.86 mm in lateral wall) as well as M-mode was good when mean spectral velocities were temporally integrated and the results did not differ statistically. Conversely, displacement values from the inner or outer border of the spectral signal differed significantly from values obtained with colour TD and M-mode (p < 0.001, in both cases).
  
  
  CONCLUSIONS
  LV systolic myocardial measurements based on mean spectral TD frequencies are highly concordant with those provided by colour TD and M-mode. Hence, in order to maintain compatibility of the results, the use of this particular spectral TD procedure should be advocated in clinical praxis.
authors: Department of Clinical Physiology, Karolinska University Hospital in Huddinge, Stockholm, Sweden. aristomenis.manouras@karolinska.se
authors: Aristomenis
authors: A
authors: Manouras
authors: Arben
authors: A
authors: Shala
authors: Evangelia
authors: E
authors: Nyktari
authors: Kambiz
authors: K
authors: Shahgaldi
authors: Reidar
authors: R
authors: Winter
authors: Panagiotis
authors: P
authors: Vardas
authors: Lars-Ake
authors: LA
authors: Brodin
authors: Jacek
authors: J
authors: Nowak
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D015150:Echocardiography, Doppler / Q000379:methods*; D018618:Echocardiography, Doppler, Color; D054459:Elasticity Imaging Techniques / Q000379:methods*; D005260:Female; D006352:Heart Ventricles / Q000000981:diagnostic imaging*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D009206:Myocardium; D013599:Systole