Reproducibility of Results

The goals of this observational study are to test the reliability of a new, standardized physical examination method to identify motion problems within joints or groups of joints among adult asymptomatic volunteers and in patients hospitalized with stroke or stroke-like episodes (e.g., transient ischemic attack, TIA). The main questions this investigation aims to answer are: * Can different, independent providers reliability quantify motion pattern problems using a systematic approach called, The Functional Pathology of the Musculoskeletal System (FPMSS) model? * Are there differences in joint(s) motion patterns among asymptomatic volunteers, patients with TIA (people with brain disease without new neurologic disability), and recent ischemic stroke (patients with new stroke-related-disability, e.g., paralysis)? * Is there an association between joint(s) motion impairment severity and stroke survivor outcomes? Participants (asymptomatic and those with stroke) will undergo a set of repeated paired, musculoskeletal physical exams by independent providers blinded to each other's assessments and patient information. Researchers will compare the severity, location, and quantity of joint(s) motion impairment between these three groups with the physical examination methodology (FPMSS). Clinical information (e.g., test results, diagnoses, brain imaging, medical history) will be collected from patients admitted for TIA and stroke. Enrolled participants with recent stroke will complete a survey three months after hospitalization to determine their self-perceived quality-of-life.

Lung ultrasound is an increasingly valuable diagnostic tool in neonatal intensive care due to its safety and accessability. This pilot study investigates whether a quantitative approach - the heterogeneity index, previously only used in fetal lung assessment - can enhance the diagnostic accuracy of neonatologist-performed lung ultrasound (NPLUS). The index will be calculated from raw ultrasound images of preterm and term neonates and compared with conventional lung ultrasound scores to evaluate its clinical relevance.