VisTellAR: Embedding Data Visualization to Short-form Videos Using Mobile Augmented Reality.

With the rise of short-form video platforms and the increasing availability of data, we see the potential for people to share short-form videos embedded with data in situ (e.g., daily steps when running) to increase the credibility and expressiveness of their stories.

VisTA-LIVE: A Visualization Tool for Assessment of Laboratories in Virtual Environments.

A Virtual Reality Laboratory (VR Lab) experiment refers to an experiment session that is being conducted in the virtual environment through Virtual Reality (VR) and aims to deliver procedural knowledge to students similar to that in a physical lab environment. While VR Lab is becoming more popular among education institutes as a learning tool for students, existing designs are mostly considered from a student's perspective. Instructors could only receive limited information on how the students are performing and could not provide useful feedback to aid the students' learning and evaluate their performance.

Electrophysiological mapping of the epicardium via 3D-printed flexible arrays.

Cardiac electrophysiology mapping and ablation are widely used to treat heart rhythm disorders such as atrial fibrillation (AF) and ventricular tachycardia (VT). Here, we describe an approach for rapid production of three dimensional (3D)-printed mapping devices derived from magnetic resonance imaging. The mapping devices are equipped with flexible electronic arrays that are shaped to match the epicardial contours of the atria and ventricle and allow for epicardial electrical mapping procedures.

A Modified 4Ts Score for Heparin-Induced Thrombocytopenia in the Mechanical Circulatory Support Population.

Objective: To identify risk factors and develop a pretest scoring system to differentiate patients with heparin-induced thrombocytopenia (HIT) in the mechanical circulatory support (MCS) population. The authors present a modified "4T" scoring system, which considers the "type of mechanical circulatory support" that may help identify patients at risk for developing postoperative HIT.

Design: A retrospective cohort study.

High-resolution spatiotemporal changes in dominant frequency and structural organization during persistent atrial fibrillation.

Objective: Analyze changes in frequency activity and structural organization that occur over time with persistent atrial fibrillation (AF).

Background: Little is known about the frequency characteristics of the epicardium during transition from paroxysmal to persistent AF. Accurate identification of areas of high dominant frequency (DF) is often hampered by limited spatial resolution.

GestureLens: Visual Analysis of Gestures in Presentation Videos.

Appropriate gestures can enhance message delivery and audience engagement in both daily communication and public presentations. In this article, we contribute a visual analytic approach that assists professional public speaking coaches in improving their practice of gesture training through analyzing presentation videos. Manually checking and exploring gesture usage in the presentation videos is often tedious and time-consuming.

Electrophysiologic Conservation of Epicardial Conduction Dynamics After Myocardial Infarction and Natural Heart Regeneration in Newborn Piglets.

Newborn mammals, including piglets, exhibit natural heart regeneration after myocardial infarction (MI) on postnatal day 1 (P1), but this ability is lost by postnatal day 7 (P7). The electrophysiologic properties of this naturally regenerated myocardium have not been examined. We hypothesized that epicardial conduction is preserved after P1 MI in piglets.

Hybrid Ablation for Atrial Fibrillation: Safety & Efficacy of Unilateral Epicardial Access.

Hybrid ablation combines thoracoscopic epicardial ablation with percutaneous catheter based endocardial ablation for the treatment of AF. The purpose of this study was to evaluate the safety and efficacy of hybrid ablation surgery for the treatment of atrial fibrillation (AF), and to compare outcomes of unilateral vs bilateral thoracoscopic epicardial ablation. Patients with documented AF who underwent hybrid ablation were followed post-operatively for major events.

A Threshold QuickDASH Score for Estimating a Diagnosis of Major Depression in Patients With Fingertip Injuries in the American and Dutch Population.

Background: The aim was to determine the threshold Quick Disabilities of the Arm, Shoulder, and Hand (QuickDASH) score that estimates a diagnosis of major depression in patients with fingertip injuries in American and Dutch patients.

Methods: In this observational cross-sectional study, 112 patients with a recent fingertip injury measured symptoms of depression with the Patient Health Questionnaire and upper extremity disability with the QuickDASH.

Results: In the US cohort, 8 of 56 patients had an estimated diagnosis of major depression.

Radial Shortening Osteotomy for Symptomatic Kienböck's Disease: Complications and Long-Term Patient-Reported Outcome.

 To determine the rate of salvage procedures and any other unplanned reoperations in patients with symptomatic Kienböck's disease who were treated with radial shortening osteotomy. In addition, we studied patient-reported outcome in the long term using Patient-Reported Outcome Measure Information System (PROMIS) instruments.  We performed a retrospective review of all patients who underwent radial shortening osteotomy for stage 2 and 3A Kienböck's disease.

Intrinsically stretchable electrode array enabled in vivo electrophysiological mapping of atrial fibrillation at cellular resolution.

Electrophysiological mapping of chronic atrial fibrillation (AF) at high throughput and high resolution is critical for understanding its underlying mechanism and guiding definitive treatment such as cardiac ablation, but current electrophysiological tools are limited by either low spatial resolution or electromechanical uncoupling of the beating heart. To overcome this limitation, we herein introduce a scalable method for fabricating a tissue-like, high-density, fully elastic electrode (elastrode) array capable of achieving real-time, stable, cellular level-resolution electrophysiological mapping in vivo. Testing with acute rabbit and porcine models, the device is proven to have robust and intimate tissue coupling while maintaining its chemical, mechanical, and electrical properties during the cardiac cycle.

A Mobile Game (Safe City) Designed to Promote Children's Safety Knowledge and Behaviors: Protocol for a Randomized Controlled Trial.

Background: Children have high levels of curiosity and eagerness to explore. This makes them more vulnerable to danger and hazards, and they thus have a higher risk of injury. Safety education such as teaching safety rules and tips is vital to prevent children from injuries.

Unplanned Reoperation and Implant Revision After Total Wrist Arthroplasty.

Total wrist arthroplasty (TWA) is a treatment option for many debilitating wrist conditions. With recent improvements in implant design, indications for TWA have broadened. However, despite these improvements, there are still complications associated with TWA, such as unplanned reoperation and eventual implant removal.

EmotionCues: Emotion-Oriented Visual Summarization of Classroom Videos.

Analyzing students' emotions from classroom videos can help both teachers and parents quickly know the engagement of students in class. The availability of high-definition cameras creates opportunities to record class scenes. However, watching videos is time-consuming, and it is challenging to gain a quick overview of the emotion distribution and find abnormal emotions.

PlanningVis: A Visual Analytics Approach to Production Planning in Smart Factories.

Production planning in the manufacturing industry is crucial for fully utilizing factory resources (e.g., machines, raw materials and workers) and reducing costs.

Intravenous Drug Use-Related Complications of the Hand and Upper Extremity.

Background: In the last decade, there has been an increase in intravenous drug use (IVDU) and associated medical problems. Users commonly inject into their upper extremities, which can result in infection and other sequelae in this area. The goal of this study was to compare demographics and treatment for upper extremity infections between intravenous drug users and non-intravenous drug users over the past 10 years at 1 level I emergency department (ED).

ViSeq: Visual Analytics of Learning Sequence in Massive Open Online Courses.

The research on massive open online courses (MOOCs) data analytics has mushroomed recently because of the rapid development of MOOCs. The MOOC data not only contains learner profiles and learning outcomes, but also sequential information about when and which type of learning activities each learner performs, such as reviewing a lecture video before undertaking an assignment. Learning sequence analytics could help understand the correlations between learning sequences and performances, which further characterize different learner groups.

Carpal Coalitions on Radiographs: Prevalence and Association With Ordering Indication.

Purpose: Carpal coalitions are common and usually incidental to the indication for wrist radiographs. It is not clear if, or when, carpal coalitions cause pain. The aim of this study was to assess the prevalence of incidental carpal coalitions by evaluating radiographs taken for various indications and to test the association of demographic variables and ordering indications with the finding of a carpal coalition.

Phosphomimetic modulation of eNOS improves myocardial reperfusion and mimics cardiac postconditioning in mice.

Objective: Myocardial infarction resulting from ischemia-reperfusion injury can be reduced by cardiac postconditioning, in which blood flow is restored intermittently prior to full reperfusion. Although key molecular mechanisms and prosurvival pathways involved in postconditioning have been identified, a direct role for eNOS-derived NO in improving regional myocardial perfusion has not been shown. The objective of this study is to measure, with high temporal and spatial resolution, regional myocardial perfusion during ischemia-reperfusion and postconditioning, in order to determine the contribution of regional blood flow effects of NO to infarct size and protection.

eNOS phosphorylation on serine 1176 affects insulin sensitivity and adiposity.

Phosphorylation of endothelial nitric oxide synthase (eNOS) is an important regulator of its enzymatic activity. We generated knockin mice expressing phosphomimetic (SD) and unphosphorylatable (SA) eNOS mutations at S1176 to study the role of eNOS phosphorylation. The single amino acid SA mutation is associated with hypertension and decreased vascular reactivity, while the SD mutation results in increased basal and stimulated endothelial NO production.

Hierarchical architecture influences calcium dynamics in engineered cardiac muscle.

Changes in myocyte cell shape and tissue structure are concurrent with changes in electromechanical function in both the developing and diseased heart. While the anisotropic architecture of cardiac tissue is known to influence the propagation of the action potential, the influence of tissue architecture and its potential role in regulating excitation-contraction coupling (ECC) are less well defined. We hypothesized that changes in the shape and the orientation of cardiac myocytes induced by spatial arrangement of the extracellular matrix (ECM) affects ECC.

Implantable magnetic relaxation sensors measure cumulative exposure to cardiac biomarkers.

Molecular biomarkers can be used as objective indicators of pathologic processes. Although their levels often change over time, their measurement is often constrained to a single time point. Cumulative biomarker exposure would provide a fundamentally different kind of measurement to what is available in the clinic.

Motion analysis and segmentation through spatio-temporal slices processing.

This paper presents new approaches in characterizing and segmenting the content of video. These approaches are developed based upon the pattern analysis of spatio-temporal slices. While traditional approaches to motion sequence analysis tend to formulate computational methodologies on two or three adjacent frames, spatio-temporal slices provide rich visual patterns along a larger temporal scale.