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- Title
A024: Myocardial integrated backscatter and doppler tissue imaging: A new approach for the study of left ventricular hypertrophy.
- Authors
Di Bello, V.; Pedrinelli, R.; Bertini, A.; Giorgi, D.; Talini, E.; Cioppi, A.; Khabirinejad, J.; Pallini, M.; Precisi, S.; Moretti, L.; Caputo, M.T.; Dell'Omo, G.; Giusti, C.
- Abstract
Aim of the study is to analyze relationship between ultrasonic backscatter myocardial indexes and the major-axis functional Doppler tissue Imaging parameters in two models of left ventricular hypertrophy: athlete's heart and hypertensive cardiopathy of comparable left ventricular mass. We have studied three groups of 10 subjects, all males of mean age (31.6 ± 3.5), with comparable weight and height: athlete's group (A) (all cyclists); essential hypertensive group (I) and control group (C). All subjects have performed 2D-color Doppler echocardiography with a digital echograph Hewlett-Packard Sonos 5500, for analysis of left ventricular mass and function. With 'Acoustic Densitometry' module, we obtain ultrasonic myocardial integrated backscatter (IB) signal of septum and posterior wall, considering systo-diastolic variation of backscatter as Cyclic Variation Index (CVIbs). Myocardial velocities across the left ventricular major axis are sampled at septum and lateral wall level by DTI. CVIbs both at septum and posterior wall is significantly lower in hypertensives in comparison with athletes and controls, who are comparable. Early diastolic myocardial velocity (Em) of lateral wall and of septum is significant lower in hypertensives, while late diastolic myocardial velocity is significantly higher in hypertensives in comparison with athletes; the Em/Am ratio, is significantly lower in hypertensives in comparison both with athletes and controls. (See Table)Significant correlations are present between ultrasonic backscatter and DTI indexes and between both both of them and mean arterial pressure (MAP). The higher abnormalities of CVIbs and of Em/Am ratio are related to the higher MAP values. Therefore both ultrasonic approaches could give a different, integrate contribute to better define the acoustic textural properties of the hypertrophied myocardium.Am J Hypertens (2000) 13, 48A-48A; doi:S0895-7061(00)00416-7
- Publication
American Journal of Hypertension, 2000, Vol 13, p48A
- ISSN
0895-7061
- Publication type
Article
- DOI
10.1016/S0895-7061(00)00416-7