Two-dimensional echocardiography using the modified biplane Simpson's rule strongly correlated (mean r = 0.897) with ultrafast computed tomography for left ventricular volume and mass calculations.
Observational (n=56)
Does two-dimensional echocardiography accurately measure left ventricular volume and mass compared to ultrafast computed tomography in patients with various cardiac conditions?
Two-dimensional echocardiography, particularly using the modified biplane Simpson's rule, is accurate for measuring left ventricular volumes and mass in patients with global LV dysfunction but less reliable in those with regional ischemic changes.
Effect estimate: mean r = 0.897
This study was undertaken to define the accuracy of two-dimensional echocardiography in the determination of left ventricular end-diastolic and end-systolic volumes, stroke volume, ejection fraction, and mass when compared to ultrafast cine computed tomography in the same 56 patients. Single-plane and biplane modified Simpson's rule, single-plane and biplane ellipsoidal formula, bullet formula (biplane only), and biapical Simpson's rule methods were utilized. Linear regression analysis showed the strongest correlation with the modified biplane Simpson's rule (mean r = 0.897). In valvular heart disease (n = 12) and dilated cardiomyopathy (n = 6), the mean correlation coefficients for all methods were high (r = 0.894 and 0.911, respectively). The mean correlation coefficient for all methods in patients with prior myocardial infarction (n = 25) was relatively poor (r = 0.643). Intraobserver and interobserver variabilities for all methods were low (r = 0.980 and 0.965, respectively). It is concluded that calculations of left ventricular volumes and mass by two-dimensional echocardiography are accurate and reproducible in patients with a global effect on the left ventricle and were less acceptable in patients with segmental (ischemic) left ventricular involvement. The best measurement technique is a modified biplane Simpson's rule.
Kuroda et al. (Sat,) conducted a observational in Valvular heart disease, dilated cardiomyopathy, or prior myocardial infarction (n=56). Two-dimensional echocardiography vs. Ultrafast cine computed tomography was evaluated on Accuracy of left ventricular end-diastolic and end-systolic volumes, stroke volume, ejection fraction, and mass (mean r = 0.897). Two-dimensional echocardiography using the modified biplane Simpson's rule strongly correlated (mean r = 0.897) with ultrafast computed tomography for left ventricular volume and mass calculations.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: