BACKGROUND There is no current acceptable approach for intracardiac beating-heart interventions. We have adapted real-time 3-dimensional echocardiography with specialized instrumentation to facilitate beating-heart repair of atrial septal defects and mitral valve plasty to investigate the feasibility of real-time 3-dimensional echocardiography-guided cardiac surgery. METHODS In experiment I a...

This paper reviews ultrasound segmentation methods, in a broad sense, focusing on techniques developed for medical ultrasound images. Segmenting abnormal from normal myocardium using highfrequency intracardiac echocardiography (ICE) the 3D real-time images present new challenges for image processing in LabVIEW. Gray-level intensity and texture features of ICE images of myocardium with the same ...

Cardiac imaging known as echocardiography is a non-invasive tool utilized to produce data including images and videos, which cardiologists use diagnose cardiac abnormalities in general myocardial infarction (MI) particular. Echocardiography machines can deliver abundant amounts of that need be quickly analyzed by help them make diagnosis treat conditions. However, the acquired quality varies de...

Background We postulated that the late electrophysiological effects of radiofrequency (RF) ablation may be related to microvascular injury extending beyond the region of acute coagulation necrosis. Methods and Results Eighteen RF lesions created in the left anterior descending coronary artery (LAD) perfusion bed of seven open chest anesthetized dogs were studied. The ablation electrode and surr...

Echocardiography is one of the primary imaging modalities used in the diagnosis of cardiovascular diseases. It is commonly used to extract cardiac functional indices including the left ventricular (LV) volume, mass, and motion. The relevant echocardiography analysis methods, including motion tracking, anatomical segmentation, and registration, conventionally use the intensity values and/or phas...

OBJECTIVE To define by three dimensional echocardiography the pattern and potential determinants of contraction of a secundum atrial septal defect through the cardiac cycle, and to evaluate the possibility of using cross sectional transthoracic and transoesophageal imaging to assess the dynamic nature of the defect. DESIGN Three dimensional echocardiography was performed using a multiplane tr...

Application of percutaneous techniques is a major advance in the field of structural cardiology that has been extended to a large number of diseases that were previously treated surgically or had no available treatment. Advancing these techniques requires a precise knowledge of cardiovascular anatomy, and the various imaging methods have become an indispensable tool in their development. To thi...

OBJECTIVE To evaluate the clinical usefulness of transoesophageal echocardiography in the assessment of children with fixed left ventricular outflow tract stenosis. PATIENTS AND METHODS Eight consecutive children, aged over 5 years, with fixed subaortic stenosis and one child with fixed subpulmonary left ventricular outflow tract stenosis were prospectively assessed by precordial and transoes...

BACKGROUND Doppler echocardiography analysis has become a golden standard in the modern diagnosis of heart diseases. In this paper, we propose a set of techniques for semi-automated parameter extraction for aortic valve stenosis severity grading. OBJECTIVES The main objectives of the study is to create echocardiography image processing techniques, which minimize manual image processing work o...