Data from: Longitudinal Assessment of Quantitative Metrics for Skeletal Muscle Health using 3D Rotational Shear Wave Elasticity Imaging (3D-RSWEI) in in vivo vastus lateralis

Measurements of shear wave speed and fiber tilt angle over three months using ultrasonic 3D-rotational shear wave elasticity imaging. This file stores all data from a longitudinal ultrasonic shear wave elasticity imaging (SWEI) study conducted in Summer 2025. The data was collected over a three month period to characterize the longitudinal variability of passive muscle mechanics in healthy volunteer muscle. This study was conducted in the healthy vastus lateralis of ten participants over 6 timepoints which were separated by 2 weeks each. The data presented is measured shear wave speeds (SWS) and fiber tilt angle from 3D-rotational SWEI (3D-RSWEI) acquisitions at each time point. The data is sorted by subject ID, timepoint, and knee flexion angle.