Background Cardiac magnetic resonance (CMR) is the gold standard imaging method to assess left ventricular mass (LVM), but M-mode echocardiography is more common during clinical practice. Proposed methods to normalize LVM to anthropometric measures provide different cut-off values for LV hypertrophy (LVH). We compare LVM assessed by echocardiography and CMR and evaluate the level of agreement f...

Objectives – 1. To determine the suitability of a pharmacological protocol for inducing a range of cardiac outputs in anesthetized horses. 2. To determine whether such a protocol could be used in a study comparing the methods of M-mode echocardiography and thermodilution for determination of cardiac output. Animals – Five horses with no evidence of cardiovascular or other systemic disease. Meth...

Diastolic bulging of the interventricular septum (IVS) toward the left ventricle was observed by real-time cross-sectional echocardiography in three patients with primary pulmonary hypertension and one patient with secondary pulmonary hypertension after closure of an atrial septal defect. M-mode echocardiography showed a characteristic abnormal pattern of septal motion in diastole and in systol...

A case of traumatic tricuspid insufficiency is presented. In the diagnosis of ruptured chordae tendineae of the tricuspid valve, two-dimensional echocardiography was an essential diagnostic procedure, while M-mode echocardiography showed no specific findings. Ruptured chordae tendineae of the tricuspid valve were confirmed at operation.

We sought to determine the relative clinical abilities and roles of echocardiography and scintigraphy in left-to-right shunt diagnosis. M-mode echocardiographic and scintigraphic studies were analyzed in 37 adults presenting diagnostic difficulties with suspected left-to-right shunts. The historic, physical, radiographic and electrocardiographic data were frequently ambiguous. An enlarged right...

Cross-sectional echocardiography is a new noninvasive technique for imaging the heart. We developed a method for using mechanical cross-sectional echocardiograms (sector scans) to determine left ventricular volumes and ejection fraction. Using left ventricular cineangiography as a standard, sector scan ejection fraction correlated better (r = 0.93) than M-mode echocardiography by any of three e...