Ultrasensitive Xe Magnetic Resonance Imaging: From Clinical Monitoring to Molecular Sensing.

Magnetic resonance imaging (MRI) is a cornerstone technology in clinical diagnostics and in vivo research, offering unparalleled visualization capabilities. Despite significant advancements in the past century, traditional H MRI still faces sensitivity limitations that hinder its further development. To overcome this challenge, hyperpolarization methods have been introduced, disrupting the thermal equilibrium of nuclear spins and leading to an increased proportion of hyperpolarized spins, thereby enhancing sensitivity by hundreds to tens of thousands of times.

RAVE checklist: Recommendations for overcoming challenges in retrospective safety studies of automated driving systems.

Objective: The public, regulators, and domain experts alike seek to understand the effect of deployed SAE level 4 automated driving system (ADS) technologies on safety. The recent expansion of ADS technology deployments is paving the way for early stage safety impact evaluations, whereby the observational data from both an ADS and a representative benchmark fleet are compared to quantify safety performance.

Methods: In January 2024; a working group of experts across academia, insurance, and industry came together in Washington, DC to discuss the current and future challenges in performing such evaluations.

A Review of Circulating Tumor DNA (ctDNA) in Pancreatic Cancer: Ready for the Clinic?

Pancreatic ductal adenocarcinoma is a devastating disease which is associated with an increase in cancer-related death in the USA. The minority of patients are cured by surgery alone and typically require adjuvant chemotherapy in order to improve clinical outcomes. Circulating tumor DNA (ctDNA) is an emerging technology whereby microscopic levels of minimal residual disease (MRD) can be detected in the bloodstream.

Surgical intervention in traumatic brain injury: a systematic review and meta-analysis of decompressive craniotomy.

Background: Traumatic brain injury (TBI) is considered a major cause of death globally, resulting from trauma. Decompressive craniectomy (DC) may improve functional outcomes in patients with TBI and its associated complications. This study was designed to determine safety and efficacy of DC in improving clinical outcomes in TBI patients compared to standard therapy.

MRI-assessed Dynamic Hyperinflation Induced by Tachypnea in Chronic Obstructive Pulmonary Disease: The SPIROMICS-HF Study.

Purpose To assess the repeatability of real-time cine pulmonary MRI measures of metronome-paced tachypnea (MPT)-induced dynamic hyperinflation and its relationship with chronic obstructive pulmonary disease (COPD) severity. Materials and Methods SubPopulations and InteRmediate Outcome Measures In COPD Study (SPIROMICS) (ClinicalTrials.gov identifier no.

Iodine staining with distance countdown improving the safety for reduction of adverse events: a randomized controlled trial.

Background: Lugol's chromoendoscopy (LCE) is valuable, cost-effective, and widely used in early esophageal cancer (EEC) screening, yet it suffers from low compliance due to adverse events after LCE. In addition, the reflux of iodine during iodine staining in the upper esophagus brings the risk of bucking and aspiration. We introduced a new model called distance countdown (DC) aimed to reduce reflux during iodine staining in upper esophageal LCE.

The Story behind the Science: On the discovery of respiratory syncytial virus.

Respiratory syncytial virus (RSV) was discovered in 1956 by the laboratory of Robert Chanock after its isolation from children with upper respiratory infections. Here, we review the events leading to its discovery including its prior isolation as chimpanzee coryza virus and its subsequent association with human disease.

How norms-shifting interventions foster community-level social and behavior change: new insights from a synthesis of realist evaluations of community-level interventions.

Social norms, the informal rules that influence behavior, play essential roles in shaping people's behavior. Community-based norms-shifting interventions (NSIs) identify gender and other social norms linked to unhealthy behaviors and implement activities to promote collective change by encouraging communities to reflect on and question these norms. Though NSIs are gaining international traction in social and behavior change programming for health promotion, how change occurs needs to be clearly understood in African and other contexts.

The Role of Proton Magnetic Resonance Spectroscopy in Neonatal and Fetal Brain Research.

The biochemical composition and structure of the brain are in a rapid change during the exuberant stage of fetal and neonatal development. H-MRS is a noninvasive tool that can evaluate brain metabolites in healthy fetuses and infants as well as those with neurological diseases. This review aims to provide readers with an understanding of 1) the basic principles and technical considerations relevant to H-MRS in the fetal-neonatal brain and 2) the role of H-MRS in early fetal-neonatal development brain research.

Neighborhood opportunity and residential instability: associations with mental health in middle childhood.

Background: Neighborhood quality may contribute to child mental health, but families with young children often move, and residential instability has also been tied to adverse mental health. This study's primary goal was to disentangle the effects of neighborhood quality from those of residential instability on mental health in middle childhood.

Methods: 1,946 children from 1,652 families in the Upstate KIDS cohort from New York state, US, were followed prospectively from birth to age 10.

Extending Density-Corrected Density Functional Theory to Large Molecular Systems.

Practical density-corrected density functional theory (DC-DFT) calculations rely on Hartree-Fock (HF) densities, which can be computationally expensive for systems with over a hundred atoms. We extend the applicability of HF-DFT using the dual-basis method, where the density matrix from a smaller basis set is used to estimate the HF solution on a larger basis set. Benchmarks on many systems, including the GMTKN55 database for main-group chemistry, and the L7 and S6L data sets for large molecular systems demonstrate the efficacy of our approach.

A probabilistic approach to estimating timber harvest location.

Determining the harvest location of timber is crucial to enforcing international regulations designed to protect natural resources and to tackle illegal logging and associated trade in forest products. Stable isotope ratio analysis (SIRA) can be used to verify claims of timber harvest location by matching levels of naturally occurring stable isotopes within wood tissue to location-specific ratios predicted from reference data ("isoscapes"). However, overly simple models for predicting isoscapes have so far limited the confidence in derived predictions of timber provenance.

LGBTQ+ status and sex of record in Veterans with post-traumatic stress disorder: demographics, comorbidities, and outpatient encounters.

Objectives: This study aims to analyze differences between lesbian, gay, bisexual, transgender, and queer (LGBTQ+) and non-LGBTQ+ Veterans with post-traumatic stress disorder (PTSD) in terms of demographics, comorbidities, and medical care usage, including differences by sex of record, including separate analyses for transgender and non-transgender Veterans.

Methods: Chi-square, -test, ANOVA Welch one-way testing, and absolute standardized difference analyses were conducted on a cohort of 277,539 Veterans diagnosed with PTSD.

Results: The study found significant differences, particularly concerning positive LGBTQ+ status and sex of record.

Deciphering Immunometabolic Landscape in Rheumatoid Arthritis: Integrative Multiomics, Explainable Machine Learning and Experimental Validation.

Purpose: Immunometabolism is pivotal in rheumatoid arthritis (RA) pathogenesis, yet the intricacies of its pathological regulatory mechanisms remain poorly understood. This study explores the complex immunometabolic landscape of RA to identify potential therapeutic targets.

Patients And Methods: We integrated genome-wide association study (GWAS) data involving 1,400 plasma metabolites, 731 immune cell traits, and RA outcomes from over 58,000 participants.

Point prevalence survey of antibiotics in a pediatric tertiary hospital in the Republic of Panama.

Objective: To conduct a point prevalence survey (PPS) of antibiotic use in the main pediatric tertiary-level hospital in Panama City to establish antibiotic prevalence and identify key areas for addressing antimicrobial resistance.

Methods: This point prevalence survey (PPS) conducted in a tertiary-level hospital in Panama followed the Pan American Health Organization's adaptation of the methodology proposed by the World Health Organization for PPSs on antibiotic use. Information obtained included patients' demographic characteristics, antimicrobial prescriptions, indication for antimicrobial use, and prescription's adherence to guidelines.

[Analysis of the surveillance system for adverse events following Immunization (AEFI) related to COVID-19 vaccines in Colombia, 2021-2023Análise do sistema de vigilância de ESAVI por vacinas contra a COVID-19 na Colômbia, 2021-2023].

Objective: To describe the functioning of the surveillance system for adverse events following immunization (AEFI) in Colombia using the evaluation tools proposed by the World Health Organization (WHO).

Method: Descriptive study of the performance of the AEFI surveillance system for COVID-19 vaccines between 17 February 2021 and 30 September 2023. WHO indicators for structure, process, and results were adapted.

Cross Sectional Study of Vitamin D Levels in Western Rajasthan and Meta-Analysis for Estimation of Vitamin D Levels.

Many studies showed Vitamin D deficiency is highly prevalent in healthy individuals. We planned to study the normal levels of Vitamin D in healthy individuals and make recommendation for defining deficiency of 25(OH)D in Indian population. ormal healthy subjects 18 to 60 years of age were included.

High-quality targeted temperature management combined with decompressive craniectomy in patients with poor-grade aneurysmal subarachnoid hemorrhage: a secondary analysis of a multicenter prospective study.

Background: The effect of targeted temperature management (TTM) combined with decompressive craniectomy (DC) on poor-grade aneurysmal subarachnoid hemorrhage (aSAH) has not been previously addressed in the literature. This study aims to investigate the therapeutic outcomes of the combination of TTM and DC in patients with poor-grade aSAH.

Methods: This study represents a secondary analysis of the Multicenter Clinical Research on Targeted Temperature Management of Poor-grade Aneurysmal Subarachnoid Hemorrhage (High-Quality TTM for PaSAH), a multicenter prospective study conducted in China.

Dentigerous Cyst and Glandular Odontogenic Cyst: A Rare Combination of Coexisting Pathologies.

A dentigerous cyst (DC) is the most common developmental cystic lesion of the jaws. Histologically, these cysts derive from the odontogenic epithelium that includes the reduced enamel epithelium, epithelial cell rests of Serres, and epithelial cell rests of Malassez. Radiographically, DCs are usually presented as well-defined radiolucencies associated with the crown of an unerupted tooth at the level of the cementoenamel junction (CEJ).

What 'unexplored' means: mapping regions with digitized natural history records to look for 'biodiversity blindspots'.

We examined global records of accessible natural history voucher collections (with publicly available data and reliable locality data) for terrestrial and freshwater vascular plants, fungi, freshwater fishes, birds, mammals, and herpetofauna (amphibians and reptiles) and highlight areas of the world that would be considered undersampled and sometimes called 'unexplored' (., have relatively low, or no evidence of, past sampling efforts) under typical Western-scientific descriptions. We also question what 'unexplored' may mean in these contexts and explain how replacing the term in favor of more nuanced phrasing (.

Role of pulmonary rehabilitation in extracellular matrix protein expression in vastus lateralis muscle in atrophic and nonatrophic patients with COPD.

Background: In response to exercise-based pulmonary rehabilitation (PR), the type of muscle fibre remodelling differs between COPD patients with peripheral muscle wasting (atrophic patients with COPD) and those without wasting (nonatrophic patients with COPD). Extracellular matrix (ECM) proteins are major constituents of the cell micro-environment steering cell behaviour and regeneration. We investigated whether the composition of ECM in atrophic compared to nonatrophic patients with COPD differs in response to PR.

Dysplasia and Colorectal Cancer Surveillance in Ulcerative Colitis Patients in Latin America: Real-World Data.

Background: The prevalence of colorectal cancer (CRC) in patients with ulcerative colitis (UC) is higher than in the general population, in Latin America there is a progressive increase of UC, and information about CRC screening in inflammatory bowel disease (IBD) is scarce. The aim of this study was to analyze the findings of endoscopic surveillance of CRC in patients with IBD according to available technology.

Methods: Multicenter, cross-sectional, analytical study conducted in Latin American countries, in patients with UC, predominantly with more than 8 years of diagnosis and different degrees of disease activity.

Characteristics of Child Sexual Abuse Material in Peer-to-Peer Networks and Predictors of its Severity: Insights From Filenames.

The Internet has empowered millions of perpetrators who create and consume (CSAM), the current term replacing In this study, we coded data from a random sample of 2980 filenames from files shared in peer-to-peer (P2P) networks from U.S. IP addresses in 2021.