Clinical investigationUltrasonic myocardial tissue characterization in patients with dilated cardiomyopathy: Value in noninvasive assessment of myocardial fibrosis
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Ultrasound Tissue Characterization Does Not Differentiate Genotype, But Indexes Ejection Fraction Deterioration in Becker Muscular Dystrophy
2014, Ultrasound in Medicine and BiologyCitation Excerpt :UTC of myocardium was performed by: (i) obtaining from the Sonos 5500 machine, with a built-in and proprietary software, the magnitude of the cyclic variation of integrated backscatter (cvIBS), which is the difference between the average peak (end-diastole) and average nadir (end-systole) values of IBS; and (ii) calculating the calibrated IBS (cIBS), derived from the absolute IBS value also given by the Sonos 5500 machine. To calculate cIBS, the blood pool IBS was used to calibrate myocardial IBS in a semilunar region of interest (ROI) (11 × 11 mm) placed in the LV cavity at the apical level (Naito et al. 1996a). A complete blood cell count was performed both in BMD patients and in control patients.
Evaluation of Left Atrial Degeneration for the Prediction of Atrial Fibrillation. Usefulness of Integrated Backscatter Transesophageal Echocardiography
2009, JACC: Cardiovascular ImagingCitation Excerpt :Because it is considered that attenuation and the reverberation phenomena had an effect in evaluation of IBS values of the atrial wall in the present ex vivo and in vivo studies, the reverberation phenomena should be excluded for precise comparison of the IBS values. Therefore, we corrected the IBS values of the atrial wall by subtracting the IBS values of the atrial cavity with saline in the ex vivo study and with flowing blood in the in vivo study, because the same method has been performed in myocardial tissue characterization with IBS (26). Ultrasound study reported that decreasing LAA blood velocity was associated with increasing grades of spontaneous echo contrast in LA (27,28).
Relation of Hemoglobin A1c to myocardial acoustic densitometry and left ventricular diastolic function in patients with Type 2 diabetes mellitus and without evident heart disease
2009, Diabetes Research and Clinical PracticeCitation Excerpt :Experimental studies have suggested that integrated backscatter measures may be related to myocardial collagen content [8]. In humans, ultrasonic backscatter indices have been shown to be related to myocardial collagen content as assessed by endomyocardial biopsy [9,10]. Another finding in our study is the reduction of CVIB was observed in patients with DM2.
The influence of growth hormone therapy on ultrasound myocardial tissue characterization in patients with childhood onset GH deficiency
2005, International Journal of CardiologySerum markers of angiogenesis and myocardial ultrasonic tissue characterization in patients with dilated cardiomyopathy
2005, European Journal of Heart Failure