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Real-Time Three-Echocardiography for Qunatification of Heart Volumes and Ejection Fractions of Thepatients with Coronary Atery Desease and Dilated Cardio Myopacy

Author: WangXue
Tutor: ZhangMei
School: Shandong University
Course: Internal Medicine
Keywords: Real-time three-dimensional echocardiography Room Room Volume Systolic function Part
CLC: R540.45
Type: Master's thesis
Year: 2005
Downloads: 84
Quote: 0
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Abstract


Background Heart failure is the leading cause of death for cardiovascular disease . Accurate evaluation of cardiac function to determine existing heart disease , guide treatment , assess prognosis has very important significance . Over the years the ventricular ejection fraction is an important evaluation of cardiac function , but in clinical work , often present in patients with left ventricular ejection fraction values ??and clinical symptoms inconsistent . How accurate quantitative evaluation of cardiac function has been the subject of Cardiology . Cardiovascular angiography , the equilibrium radionuclide scanning and magnetic resonance technology has been widely used in the evaluation of left ventricular function , but these checks with an invasive , expensive, and difficult to repeat the examination shortcomings widely used clinically difficult . Compared with the technology , ultrasound echocardiography has non-invasive , simple operation , repeatable inspection , etc. , have been widely used in cardiac structural and functional assessment of patients with cardiovascular disease . However, the conventional application of M-mode , two-dimensional ultrasound , acoustic quantitative ultrasound technology in the measurement of left ventricular ejection fraction , first heart chamber geometry of assumptions in remodeling the measured value and the actual value of a certain error. Global left ventricular function was normal or not depends on the segmental wall motion state and inter- coordination . Closely related to the functional status of the myocardium with the structure of the myocardium and blood supply . Studies have shown that myocardial ischemia , the emergence of regional wall motion abnormalities first ventricular compliance , contractility, hemodynamic and ECG changes . Therefore , quantitative analysis of the local wall segment , has important clinical implications for the diagnosis and treatment of heart disease . The echocardiography to real-time observation of left ventricular wall movement of the various segments of the detection of motion abnormalities region . M-mode and two-dimensional echocardiography regional myocardial function can only be estimated according to local endocardial displacement , and the plane is not parallel , it is difficult to accurately quantitative evaluation of segmental wall motion . CK technology is based on acoustic quantification using integrated backscatter identify blood flow and myocardial tissue interface pixel values ??, real-time tracking of the endocardial movement , systolic time phase , the width of the ribbon represents the endocardial range of motion in different colors , quantitative assessment of regional left ventricular function .

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CLC: > Medicine, health > Internal Medicine > Heart, blood vessels ( circulatory ) disease > Diagnostics > Echocardiography
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