ABSTRACT
The analysis of segmental wall motion using two-dimentional [2-D] echocardioglaphy is subjective with inter-obsever variability.Color kinesis is new technique providing color-encoded map of endocardial motion. We evaluated the accuracy of Acoustic Quantification [AQ] and 2-D for assessment of global and regional LV systolic function compared with LV angiography as a reference method. Forty ischemic heart patients who underwent coronary angiography were included in this study in addition to 10 healthy control subjects. Control subjects and patients were evaluated by 2-D, AQ and color kinesis echocardiography. Coronary Angiography and LV angiography were done for ischemic heart patients. Regional wall motion pattern [normal, hypokinesis, Akinesis, dyskinesis as well as EF were determined. Accuracy of AQ color kinesis and 2-D were evaluated and compared to LV angiography. LVEF measured by 2-D and color kinesis were closely correlated with that estimated from contrast LV angiography ventriculography[r= 0.95 and r= 0.97 respectively]. Color kinesis compared to 2-D, enhance the accuracy of EF measurements.In control subjects there was a very close agreement of 2-D and color kinesis as regard the pattern of regional wall motion. In patients group, color kinesis was significantly better than 2-D on the definition of normal versus abnormal segments [95.2% of segments correctly evaluated by color kinesis versus 86.1% by 2-D, p < 0.05]. Color kinesis is a new echocardiographic technique that provide more accurate semiquantitative assessment of regional wall motion abnormalities. Additionally, AQ is a convenient method for better measurement of EF