Evaluation of left ventricular diastolic function using color kinesis

Abstract

We conclude that the analysis of diastolic CK by using ICK software is a useful technique that can be applied to quantitative evaluation of LV global diastolic function.

Correlation between plasma B-type natriuretic peptide levels and left ventricular diastolic function using color kinetic imaging

“…Color kinesis (CK) is a real-time echocardiographic technique based on acoustic quantification that yields regional and global information on the magnitude and timing of LV wall motion by tracking and color-encoding endocardial motion throughout the cardiac cycle [18][19][20][21]. We previously reported that the analysis of diastolic CK is a useful method for quantitative evaluation of LV diastolic function and detecting delayed LV relaxation [22,23]. The aim of this study is to investigate the relationship between plasma BNP levels and LV diastolic function by using diastolic CK imaging.…”

Assessment of left ventricular diastolic function using color kinesis: differentiation between normal and pseudonormalized patterns

“…In our previous study, the mean CK-DI for six LV segments was 70.6% in 20 healthy subjects (mean age: 30 ± 18 years), indicating that approximately 70% of maximum LV fi lling occurs during the fi rst 30% of the diastolic fi lling time in normal subjects. 11 In addition, the CK-DI of 30 patients (mean age: 67 ± 11 years) with normal LV systolic function and impaired relaxation was 50.5%. Based on these fi ndings, we reported that advanced diastolic dysfunction leads to a decrease in mean CK-DI even if systolic function remains normal.…”

“…We believe that the mean CK-DI represents a quantitative index of LV diastolic function that does not depend on LV volume change. 11 Furthermore, diastolic function may be improved by medical treatment in patients with heart failure. Figure 6 illustrates an example of a patient who improved with treatment.…”

Automatic Classification of Left Ventricular Regional Wall Motion Abnormalities in Echocardiography Images Using Nonrigid Image Registration

“…Two of these techniques are based on analyzing ultrasound radiofrequency (RF) signals [5][6][7][8][9][10][11][12][13][14][15][16][17]. The first method known as acoustic quantification is based on the detection of the interface between the tissue and the blood in each image.…”

“…Synthesized color-coded images (color kinesis) are provided using this method to display the timing and magnitude of endocardial wall motion over time, either during the systolic phase or during the diastolic phase [5][6][7][8][9][10][11]. The various quantitative indices obtained from these synthesized images are proposed for assessment of RWM of LV [6][7][8][9][10][11]. However, this method is very dependent on the signal to noise ratio of RF signal.…”