We introduce a novel method for evaluating the pupil light reflex (PLR) response using digital video recordings. Expensive, specialized devices are replacing traditional penlight tests in emergency and neurotrauma departments, but they are not widely accessible elsewhere. Recently, smartphone applications have emerged as alternatives, but...
The transition from fetal to neonatal circulation significantly impacts systemic right ventricle (SRV) function, but traditional imaging methods struggle to capture these changes. This study used advanced echocardiographic analysis to compare biomechanical and flow alterations in 10 SRV patients and 12 healthy controls, measured at 33 weeks gestation and after birth. We...
Four-dimensional flow MRI (4D flow MRI) is a powerful tool for assessing right ventricular (RV) flow dynamics in congenital heart disease, but its limited availability restricts widespread use. Doppler Velocity Reconstruction (DoVeR)from conventional echocardiography offers a promising alternative, but its accuracy compared to 4D flow MRI needs further validation....
Repaired tetralogy of Fallot (RTOF) patients often develop right ventricular (RV) dysfunction due to chronic pulmonary regurgitation, but detecting early changes in intracardiac flow remains challenging. While advanced imaging techniques like four-dimensional cardiac magnetic resonance (CMR) provide insights into vorticity and flow energy loss (FEL),...
B-mode Speckle Tracking Echocardiography (STE) estimates the change in myocardial tissue length during a heartbeat. Commercial STE software use block-matching to track local speckle patterns and advect hand-drawn boundaries through these tracks to estimate length change. Strain is gaining adoption as a clinical metric for...
Echocardiogram Particle Image Velocimetry (echoPIV) is an emerging method for cardiac flow visualization. EchoPIV tracks acoustic-opaque bubbles introduced into the blood stream using block-matching methods. Despite increased interest, echoPIV is not routinely performed, as contrast enhancement is not clinically indicated unless initial image quality is...
Visualization and quantitation of multi-directional cardiovascular flow without the need for sedation or contrast is desirable across all practices of cardiology. Intraventricular flow mapping (iVFM) is one such method for multi-direction visualization. iVFM estimates the transverse flow from color Doppler ultrasound using the continuity equation....