Identification of line-source transfer mobility and force density by ground acceleration measurements.

Ground-borne vibration caused by railway traffic has been a research concern due to its possible side effects on nearby residences. The force density and line-source mobility can effectively characterize the generation and transmission of train-induced vibrations, respectively. This research proposed a frequency-domain method for identifying the line-source transfer mobility and force density using measured vibrations at the ground surface, which was on the basis of the least-square method.

The impacts of transcatheter occlusion for congenital atrial septal defect on atrial volume, function, and synchronicity in children: a three-dimensional echocardiography study.

Objective: To evaluate the impacts of transcatheter closure for atrial septal defect (ASD) on the atria.

Methods: Thirty-four patients with ASD undergoing transcatheter occlusion were recruited in the study, and 34 patients undergoing surgical operation and 34 healthy children were age-matched as controls. A real time three-dimensional (RT3DE) echocardiography was used to measure the volume, function, and synchronicity of the atria.

[The study of vascular lesion using ultrasound in children with a history of Kawasaki disease].

Objective: To explore the endothelial function, carotid artery stiffness index and carotid intima-media thickness in children with a history of Kawasaki disease (KD).

Methods: A cohort of 204 children was studied, which comprised 51 patients with Kawasaki disease with coronary artery lesion (CAL group), 50 patients with Kawasaki disease with normal coronary arteries (normal coronary arteries group), and 103 healthy age matched children (control group). Their systemic blood pressure, fasting cholesterol concentrations, flow-mediated dilation (FMD) of the brachial artery, carotid artery stiffness index and carotid intima-media thickness (IMT) were compared.

Value of real-time 3-dimensional echocardiography sectional diagnosis in complex congenital heart disease evaluated by receiver operating characteristic analysis.

Objective: We sought to evaluate the value of real-time 3-dimensional (3D) echocardiography (RT-3DE) in the pathologic morphology of complex congenital heart disease (CHD) using receiver operating characteristic (ROC) analysis.

Methods: Thirty patients with complex CHD were examined by 2-dimensional echocardiography (2DE) and RT-3DE. Their diagnoses of pathologic morphology were made by 3 echocardiographers blinded to clinical data.

Methodological study on real-time three-dimensional echo-cardiography and its application in the diagnosis of complex congenital heart disease.

Background: Real-time three-dimensional echocardiography (RT-3DE) has made revolutionized improvements of cardiac imaging during the past few years. However, there is no standard examination method for RT-3DE so far. This study aimed to establish the diagnostic method of RT-3DE and evaluate its application in the diagnosis of complex congenital heart diseases (CHD).